From 4603514921c38f9a33381fd9c9307717b8a4f5d3 Mon Sep 17 00:00:00 2001 From: Davis Vaughan Date: Tue, 25 Apr 2023 18:06:14 -0400 Subject: [PATCH] Update to 2023c (#29) * Update version * Update to 2023c * NEWS bullet * Update tests --- NEWS.md | 2 + inst/tzdata/CONTRIBUTING | 2 +- inst/tzdata/Makefile | 297 +++++++++----- inst/tzdata/NEWS | 515 +++++++++++++++++++++++- inst/tzdata/africa | 320 +++++---------- inst/tzdata/antarctica | 34 +- inst/tzdata/asia | 613 ++++++++++++++++++----------- inst/tzdata/australasia | 185 +++------ inst/tzdata/backward | 295 +++++++++++--- inst/tzdata/backzone | 705 ++++++++++++++++++++++++++++++++- inst/tzdata/calendars | 4 +- inst/tzdata/checklinks.awk | 24 +- inst/tzdata/checktab.awk | 5 +- inst/tzdata/etcetera | 23 +- inst/tzdata/europe | 713 ++++++++-------------------------- inst/tzdata/iso3166.tab | 6 +- inst/tzdata/leap-seconds.list | 8 +- inst/tzdata/leapseconds | 8 +- inst/tzdata/leapseconds.awk | 50 ++- inst/tzdata/northamerica | 454 +++++++++------------- inst/tzdata/southamerica | 91 +++-- inst/tzdata/theory.html | 108 +++-- inst/tzdata/version | 2 +- inst/tzdata/windowsZones.xml | 10 +- inst/tzdata/ziguard.awk | 321 +++++++++++++-- inst/tzdata/zishrink.awk | 62 ++- inst/tzdata/zone.tab | 62 ++- inst/tzdata/zone1970.tab | 148 +++---- tests/testthat/test-names.R | 2 +- tests/testthat/test-path.R | 2 +- tests/testthat/test-version.R | 2 +- tools/update-zone-data.R | 2 +- 32 files changed, 3186 insertions(+), 1889 deletions(-) mode change 100755 => 100644 inst/tzdata/leapseconds.awk diff --git a/NEWS.md b/NEWS.md index 04950e4..21fdf88 100644 --- a/NEWS.md +++ b/NEWS.md @@ -1,5 +1,7 @@ # tzdb (development version) +* Updated the time zone database to 2023c (#29). + * R >=3.5.0 is now required. This is consistent with the standards of the tidyverse. diff --git a/inst/tzdata/CONTRIBUTING b/inst/tzdata/CONTRIBUTING index 4c0f56a..6d800e4 100644 --- a/inst/tzdata/CONTRIBUTING +++ b/inst/tzdata/CONTRIBUTING @@ -18,7 +18,7 @@ To email small changes, please run a POSIX shell command like 'diff -u old/europe new/europe >myfix.patch', and attach 'myfix.patch' to the email. -For more-elaborate or possibly-controversial changes, +For more-elaborate or possibly controversial changes, such as renaming, adding or removing zones, please read "Theory and pragmatics of the tz code and data" . diff --git a/inst/tzdata/Makefile b/inst/tzdata/Makefile index a9a989e..6edc73c 100644 --- a/inst/tzdata/Makefile +++ b/inst/tzdata/Makefile @@ -33,24 +33,16 @@ DATAFORM= main # make zonenames # to get a list of the values you can use for LOCALTIME. -LOCALTIME= GMT +LOCALTIME= Factory -# The POSIXRULES macro controls interpretation of nonstandard and obsolete -# POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules. -# Such a setting uses the rules in a template file to determine -# "spring forward" and "fall back" days and times; the environment -# variable itself specifies UT offsets of standard and daylight saving time. -# +# The POSIXRULES macro controls interpretation of POSIX-like TZ +# settings like TZ='EET-2EEST' that lack DST transition rules. # If POSIXRULES is '-', no template is installed; this is the default. -# # Any other value for POSIXRULES is obsolete and should not be relied on, as: # * It does not work correctly in popular implementations such as GNU/Linux. # * It does not work even in tzcode, except for historical timestamps # that precede the last explicit transition in the POSIXRULES file. # Hence it typically does not work for current and future timestamps. -# In short, software should avoid ruleless settings like TZ='EET-2EEST' -# and so should not depend on the value of POSIXRULES. -# # If, despite the above, you want a template for handling these settings, # you can change the line below (after finding the timezone you want in the # one of the $(TDATA) source files, or adding it to a source file). @@ -63,7 +55,7 @@ LOCALTIME= GMT POSIXRULES= - # Also see TZDEFRULESTRING below, which takes effect only -# if the time zone files cannot be accessed. +# if POSIXRULES is '-' or if the template file cannot be accessed. # Installation locations. @@ -176,12 +168,19 @@ TZDATA_TEXT= leapseconds tzdata.zi BACKWARD= backward -# If you want out-of-scope and often-wrong data from the file 'backzone', use +# If you want out-of-scope and often-wrong data from the file 'backzone', +# but only for entries listed in the backward-compatibility file zone.tab, use +# PACKRATDATA= backzone +# PACKRATLIST= zone.tab +# If you want all the 'backzone' data, use # PACKRATDATA= backzone +# PACKRATLIST= # To omit this data, use # PACKRATDATA= +# PACKRATLIST= PACKRATDATA= +PACKRATLIST= # The name of a locale using the UTF-8 encoding, used during self-tests. # The tests are skipped if the name does not appear to work on this system. @@ -189,6 +188,7 @@ PACKRATDATA= UTF8_LOCALE= en_US.utf8 # Non-default libraries needed to link. +# On some hosts, this should have -lintl unless CFLAGS has -DHAVE_GETTEXT=0. LDLIBS= # Add the following to the end of the "CFLAGS=" line as needed to override @@ -201,13 +201,18 @@ LDLIBS= # For example, N is 252460800 on AmigaOS. # -DHAVE_DECL_ASCTIME_R=0 if does not declare asctime_r # -DHAVE_DECL_ENVIRON if declares 'environ' +# -DHAVE_DECL_TIMEGM=0 if does not declare timegm # -DHAVE_DIRECT_H if mkdir needs (MS-Windows) -# -DHAVE_GENERIC=0 if _Generic does not work -# -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris) +# -DHAVE__GENERIC=0 if _Generic does not work* +# -DHAVE_GETRANDOM if getrandom works (e.g., GNU/Linux), +# -DHAVE_GETRANDOM=0 to avoid using getrandom +# -DHAVE_GETTEXT if gettext works (e.g., GNU/Linux, FreeBSD, Solaris), +# where LDLIBS also needs to contain -lintl on some hosts; +# -DHAVE_GETTEXT=0 to avoid using gettext # -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares # ctime_r and asctime_r incompatibly with the POSIX standard # (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined). -# -DHAVE_INTTYPES_H if you have a non-C99 compiler with +# -DHAVE_INTTYPES_H=0 if does not work*+ # -DHAVE_LINK=0 if your system lacks a link function # -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function # -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz @@ -215,20 +220,25 @@ LDLIBS= # -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure. # -DHAVE_POSIX_DECLS=0 if your system's include files do not declare # functions like 'link' or variables like 'tzname' required by POSIX -# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function -# -DHAVE_STDBOOL_H if you have a non-C99 compiler with -# -DHAVE_STDINT_H if you have a non-C99 compiler with +# -DHAVE_SETENV=0 if your system lacks the setenv function +# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function+ +# -DHAVE_STDCKDINT_H=0 if neither nor substitutes like +# __builtin_add_overflow work* +# -DHAVE_STDINT_H=0 if does not work*+ # -DHAVE_STRFTIME_L if declares locale_t and strftime_l # -DHAVE_STRDUP=0 if your system lacks the strdup function -# -DHAVE_STRTOLL=0 if your system lacks the strtoll function +# -DHAVE_STRTOLL=0 if your system lacks the strtoll function+ # -DHAVE_SYMLINK=0 if your system lacks the symlink function -# -DHAVE_SYS_STAT_H=0 if your compiler lacks a +# -DHAVE_SYS_STAT_H=0 if does not work* # -DHAVE_TZSET=0 if your system lacks a tzset function -# -DHAVE_UNISTD_H=0 if your compiler lacks a +# -DHAVE_UNISTD_H=0 if does not work* +# -DHAVE_UTMPX_H=0 if does not work* # -Dlocale_t=XXX if your system uses XXX instead of locale_t +# -DPORT_TO_C89 if tzcode should also run on C89 platforms+ # -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers # with external linkage, e.g., applications cannot define 'localtime'. # -Dssize_t=long on hosts like MS-Windows that lack ssize_t +# -DSUPPORT_C89 if the tzcode library should support C89 callers+ # -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has # security implications and is not recommended for general use # -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires; @@ -240,21 +250,32 @@ LDLIBS= # -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory; # the default is system-supplied, typically "/usr/lib/locale" # -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified -# DST transitions if the time zone files cannot be accessed +# DST transitions for POSIX-style TZ strings lacking them, +# in the usual case where POSIXRULES is '-'. If not specified, +# TZDEFRULESTRING defaults to US rules for future DST transitions. +# This mishandles some past timestamps, as US DST rules have changed. +# It also mishandles settings like TZ='EET-2EEST' for eastern Europe, +# as Europe and US DST rules differ. +# -DTZNAME_MAXIMUM=N to limit time zone abbreviations to N bytes (default 255) # -DUNINIT_TRAP if reading uninitialized storage can cause problems # other than simply getting garbage data # -DUSE_LTZ=0 to build zdump with the system time zone library # Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below. # -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and # similarly for "slim". Fat TZif files work around incompatibilities -# and bugs in some TZif readers, notably readers that mishandle 64-bit -# data in TZif files. Slim TZif files are more efficient and do not -# work around these incompatibilities and bugs. If not given, the -# default is "slim". +# and bugs in some TZif readers, notably older ones that +# ignore or otherwise mishandle 64-bit data in TZif files; +# however, fat TZif files may trigger bugs in newer TZif readers. +# Slim TZif files are more efficient, and are the default. # -DZIC_MAX_ABBR_LEN_WO_WARN=3 # (or some other number) to set the maximum time zone abbreviation length # that zic will accept without a warning (the default is 6) # $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking +# +# * Options marked "*" can be omitted if your compiler is C23 compatible. +# * Options marked "+" are obsolescent and are planned to be removed +# once the code assumes C99 or later. +# # Select instrumentation via "make GCC_INSTRUMENT='whatever'". GCC_INSTRUMENT = \ -fsanitize=undefined -fsanitize-address-use-after-scope \ @@ -264,11 +285,11 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ $(GCC_INSTRUMENT) \ -Wall -Wextra \ -Walloc-size-larger-than=100000 -Warray-bounds=2 \ - -Wbad-function-cast -Wcast-align=strict -Wdate-time \ + -Wbad-function-cast -Wbidi-chars=any,ucn -Wcast-align=strict -Wdate-time \ -Wdeclaration-after-statement -Wdouble-promotion \ -Wduplicated-branches -Wduplicated-cond \ -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ - -Winit-self -Wlogical-op \ + -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op \ -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ -Wnull-dereference \ -Wold-style-definition -Woverlength-strings -Wpointer-arith \ @@ -278,10 +299,10 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ -Wsuggest-attribute=const -Wsuggest-attribute=format \ -Wsuggest-attribute=malloc \ -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ - -Wtrampolines -Wundef -Wuninitialized -Wunused-macros \ + -Wtrampolines -Wundef -Wuninitialized -Wunused-macros -Wuse-after-free=3 \ -Wvariadic-macros -Wvla -Wwrite-strings \ -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ - -Wno-type-limits -Wno-unused-parameter + -Wno-type-limits # # If your system has a "GMT offset" field in its "struct tm"s # (or if you decide to add such a field in your system's "time.h" file), @@ -291,8 +312,9 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this. # Similarly, if your system has a "zone abbreviation" field, define # -DTM_ZONE=tm_zone -# and define NO_TM_ZONE to suppress any guessing. These two fields are not -# required by POSIX, but are widely available on GNU/Linux and BSD systems. +# and define NO_TM_ZONE to suppress any guessing. Although these two fields +# not required by POSIX, a future version of POSIX is planned to require them +# and they are widely available on GNU/Linux and BSD systems. # # The next batch of options control support for external variables # exported by tzcode. In practice these variables are less useful @@ -327,14 +349,11 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # If you want functions that were inspired by early versions of X3J11's work, # add # -DSTD_INSPIRED -# to the end of the "CFLAGS=" line. This arranges for the functions -# "offtime", "timelocal", "timegm", "timeoff", -# "posix2time", and "time2posix" to be added to the time conversion library. +# to the end of the "CFLAGS=" line. This arranges for the following +# functions to be added to the time conversion library. # "offtime" is like "gmtime" except that it accepts a second (long) argument # that gives an offset to add to the time_t when converting it. # "timelocal" is equivalent to "mktime". -# "timegm" is like "timelocal" except that it turns a struct tm into -# a time_t using UT (rather than local time as "timelocal" does). # "timeoff" is like "timegm" except that it accepts a second (long) argument # that gives an offset to use when converting to a time_t. # "posix2time" and "time2posix" are described in an included manual page. @@ -346,7 +365,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # -DNETBSD_INSPIRED=0 # to the end of the "CFLAGS=" line. Otherwise, the functions # "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the -# time library, and if STD_INSPIRED is also defined the functions +# time library, and if STD_INSPIRED is also defined to nonzero the functions # "posix2time_z" and "time2posix_z" are added as well. # The functions ending in "_z" (or "_rz") are like their unsuffixed # (or suffixed-by-"_r") counterparts, except with an extra first @@ -389,8 +408,9 @@ ZIC= $(zic) $(ZFLAGS) # To shrink the size of installed TZif files, # append "-r @N" to omit data before N-seconds-after-the-Epoch. -# To grow the files and work around older application bugs, append "-b fat"; -# see ZIC_BLOAT_DEFAULT above. +# To grow the files and work around bugs in older applications, +# possibly at the expense of introducing bugs in newer ones, +# append "-b fat"; see ZIC_BLOAT_DEFAULT above. # See the zic man page for more about -b and -r. ZFLAGS= @@ -437,16 +457,16 @@ SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~' SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3) SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]' -# These characters are Latin-1, and so are likely to be displayable -# even in editors with limited character sets. -UNUSUAL_OK_LATIN_1 = «°±»½¾× -# This IPA symbol is represented in Unicode as the composition of -# U+0075 and U+032F, and U+032F is not considered alphabetic by some -# grep implementations that do not grok composition. -UNUSUAL_OK_IPA = u̯ +# These non-alphabetic, non-ASCII printable characters are Latin-1, +# and so are likely displayable even in editors like XEmacs 21 +# that have limited display capabilities. +UNUSUAL_OK_LATIN_1 = ¡¢£¤¥¦§¨©«¬®¯°±²³´¶·¸¹»¼½¾¿×÷ # Non-ASCII non-letters that OK_CHAR allows, as these characters are # useful in commentary. -UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)$(UNUSUAL_OK_IPA) +UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1) + +# Put this in a bracket expression to match spaces. +s = [:space:] # OK_CHAR matches any character allowed in the distributed files. # This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and @@ -478,6 +498,11 @@ TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \ # Flags to give 'gzip' when making a distribution. GZIPFLAGS= -9n +# When comparing .tzs files, use GNU diff's -F'^TZ=' option if supported. +# This makes it easier to see which Zone has been affected. +DIFF_TZS= diff -u$$(! diff -u -F'^TZ=' - - <>/dev/null >&0 2>&1 \ + || echo ' -F^TZ=') + ############################################################################### #MAKE= make @@ -521,21 +546,23 @@ TDATA= $(YDATA) $(NDATA) $(BACKWARD) ZONETABLES= zone1970.tab zone.tab TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) LEAP_DEPS= leapseconds.awk leap-seconds.list -TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) $(PACKRATDATA) -DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) +TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \ + $(PACKRATDATA) $(PACKRATLIST) +DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST) DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ leapseconds $(ZONETABLES) AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk \ ziguard.awk zishrink.awk -MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl +MISC= $(AWK_SCRIPTS) TZS_YEAR= 2050 TZS_CUTOFF_FLAG= -c $(TZS_YEAR) TZS= to$(TZS_YEAR).tzs TZS_NEW= to$(TZS_YEAR)new.tzs TZS_DEPS= $(YDATA) asctime.c localtime.c \ private.h tzfile.h zdump.c zic.c +TZDATA_DIST = $(COMMON) $(DATA) $(MISC) # EIGHT_YARDS is just a yard short of the whole ENCHILADA. -EIGHT_YARDS = $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) tzdata.zi +EIGHT_YARDS = $(TZDATA_DIST) $(DOCS) $(SOURCES) tzdata.zi ENCHILADA = $(EIGHT_YARDS) $(TZS) # Consult these files when deciding whether to rebuild the 'version' file. @@ -555,7 +582,7 @@ VERSION_DEPS= \ tzfile.5 tzfile.h tzselect.8 tzselect.ksh \ workman.sh zdump.8 zdump.c zic.8 zic.c \ ziguard.awk zishrink.awk \ - zone.tab zone1970.tab zoneinfo2tdf.pl + zone.tab zone1970.tab # And for the benefit of csh users on systems that assume the user # shell should be used to handle commands in Makefiles. . . @@ -608,13 +635,17 @@ version: $(VERSION_DEPS) printf '%s\n' "$$V" >$@.out mv $@.out $@ -# These files can be tailored by setting BACKWARD and PACKRATDATA. +# These files can be tailored by setting BACKWARD, PACKRATDATA, PACKRATLIST. vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS) - $(AWK) -v DATAFORM=`expr $@ : '\(.*\).zi'` -f ziguard.awk \ + $(AWK) \ + -v DATAFORM=`expr $@ : '\(.*\).zi'` \ + -v PACKRATDATA='$(PACKRATDATA)' \ + -v PACKRATLIST='$(PACKRATLIST)' \ + -f ziguard.awk \ $(TDATA) $(PACKRATDATA) >$@.out mv $@.out $@ # This file has a version comment that attempts to capture any tailoring -# via BACKWARD, DATAFORM, PACKRATDATA, and REDO. +# via BACKWARD, DATAFORM, PACKRATDATA, PACKRATLIST, and REDO. tzdata.zi: $(DATAFORM).zi version zishrink.awk version=`sed 1q version` && \ LC_ALL=C $(AWK) \ @@ -652,6 +683,7 @@ INSTALLARGS = \ DESTDIR='$(DESTDIR)' \ LEAPSECONDS='$(LEAPSECONDS)' \ PACKRATDATA='$(PACKRATDATA)' \ + PACKRATLIST='$(PACKRATLIST)' \ TZDEFAULT='$(TZDEFAULT)' \ TZDIR='$(TZDIR)' \ ZIC='$(ZIC)' @@ -690,11 +722,6 @@ posix_right: posix_only $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only -# This obsolescent rule is present for backwards compatibility with -# tz releases 2014g through 2015g. It should go away eventually. -posix_packrat: $(INSTALL_DATA_DEPS) - $(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_only - zones: $(REDO) # dummy.zd is not a real file; it is mentioned here only so that the @@ -754,9 +781,10 @@ tzselect: tzselect.ksh version chmod +x $@.out mv $@.out $@ -check: check_character_set check_white_space check_links \ - check_name_lengths check_sorted \ - check_tables check_web check_zishrink check_tzs +check: check_back check_mild +check_mild: check_character_set check_white_space check_links \ + check_name_lengths check_slashed_abbrs check_sorted \ + check_tables check_web check_ziguard check_zishrink check_tzs check_character_set: $(ENCHILADA) test ! '$(UTF8_LOCALE)' || \ @@ -780,29 +808,47 @@ check_white_space: $(ENCHILADA) patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \ ! grep -En "$$pat" \ $$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list) - ! grep -n '[[:space:]]$$' \ + ! grep -n '[$s]$$' \ $$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list) touch $@ -PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+ -FILE_NAME_COMPONENT_TOO_LONG = \ - $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15} +PRECEDES_FILE_NAME = ^(Zone|Link[$s]+[^$s]+)[$s]+ +FILE_NAME_COMPONENT_TOO_LONG = $(PRECEDES_FILE_NAME)[^$s]*[^/$s]{15} check_name_lengths: $(TDATA_TO_CHECK) backzone ! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \ $(TDATA_TO_CHECK) backzone touch $@ +PRECEDES_STDOFF = ^(Zone[$s]+[^$s]+)?[$s]+ +STDOFF = [-+]?[0-9:.]+ +RULELESS_SAVE = (-|$(STDOFF)[sd]?) +RULELESS_SLASHED_ABBRS = \ + $(PRECEDES_STDOFF)$(STDOFF)[$s]+$(RULELESS_SAVE)[$s]+[^$s]*/ + +check_slashed_abbrs: $(TDATA_TO_CHECK) + ! grep -En '$(RULELESS_SLASHED_ABBRS)' $(TDATA_TO_CHECK) + touch $@ + CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; } -check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab - $(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu +check_sorted: backward backzone + $(AWK) '/^Link/ {printf "%.5d %s\n", g, $$3} !/./ {g++}' \ + backward | LC_ALL=C sort -cu $(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu touch $@ -check_links: checklinks.awk $(TDATA_TO_CHECK) tzdata.zi - $(AWK) -f checklinks.awk $(TDATA_TO_CHECK) - $(AWK) -f checklinks.awk tzdata.zi +check_back: checklinks.awk $(TDATA_TO_CHECK) + $(AWK) \ + -v DATAFORM=$(DATAFORM) \ + -v backcheck=backward \ + -f checklinks.awk $(TDATA_TO_CHECK) + touch $@ + +check_links: checklinks.awk tzdata.zi + $(AWK) \ + -v DATAFORM=$(DATAFORM) \ + -f checklinks.awk tzdata.zi touch $@ check_tables: checktab.awk $(YDATA) backward $(ZONETABLES) @@ -815,7 +861,7 @@ check_tables: checktab.awk $(YDATA) backward $(ZONETABLES) check_tzs: $(TZS) $(TZS_NEW) if test -s $(TZS); then \ - diff -u $(TZS) $(TZS_NEW); \ + $(DIFF_TZS) $(TZS) $(TZS_NEW); \ else \ cp $(TZS_NEW) $(TZS); \ fi @@ -832,11 +878,19 @@ check_theory.html check_tz-art.html check_tz-how-to.html check_tz-link.html: test ! -s $@.out || { cat $@.out; exit 1; } mv $@.out $@ +check_ziguard: rearguard.zi vanguard.zi ziguard.awk + $(AWK) -v DATAFORM=rearguard -f ziguard.awk vanguard.zi | \ + diff -u rearguard.zi - + $(AWK) -v DATAFORM=vanguard -f ziguard.awk rearguard.zi | \ + diff -u vanguard.zi - + touch $@ + # Check that zishrink.awk does not alter the data, and that ziguard.awk # preserves main-format data. check_zishrink: check_zishrink_posix check_zishrink_right check_zishrink_posix check_zishrink_right: \ - zic leapseconds $(PACKRATDATA) $(TDATA) $(DATAFORM).zi tzdata.zi + zic leapseconds $(PACKRATDATA) $(PACKRATLIST) \ + $(TDATA) $(DATAFORM).zi tzdata.zi rm -fr $@.dir $@-t.dir $@-shrunk.dir mkdir $@.dir $@-t.dir $@-shrunk.dir case $@ in \ @@ -845,8 +899,8 @@ check_zishrink_posix check_zishrink_right: \ esac && \ $(ZIC) $$leap -d $@.dir $(DATAFORM).zi && \ $(ZIC) $$leap -d $@-shrunk.dir tzdata.zi && \ - case $(DATAFORM) in \ - main) \ + case $(DATAFORM),$(PACKRATLIST) in \ + main,) \ $(ZIC) $$leap -d $@-t.dir $(TDATA) && \ $(AWK) '/^Rule/' $(TDATA) | \ $(ZIC) $$leap -d $@-t.dir - $(PACKRATDATA) && \ @@ -967,6 +1021,10 @@ check_public: $(VERSION_DEPS) rm public.dir/main.zi cd public.dir && $(MAKE) PACKRATDATA=backzone main.zi public.dir/zic -d public.dir/zoneinfo main.zi + rm public.dir/main.zi + cd public.dir && \ + $(MAKE) PACKRATDATA=backzone PACKRATLIST=zone.tab main.zi + public.dir/zic -d public.dir/zoneinfo main.zi : rm -fr public.dir touch $@ @@ -1004,7 +1062,7 @@ $(TIME_T_ALTERNATIVES): $(VERSION_DEPS) TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \ D=$$wd/$@.dir \ to$$range.tzs) && \ - diff -u $(TIME_T_ALTERNATIVES_HEAD).dir/to$$range.tzs \ + $(DIFF_TZS) $(TIME_T_ALTERNATIVES_HEAD).dir/to$$range.tzs \ $@.dir/to$$range.tzs && \ if diff -q Makefile Makefile 2>/dev/null; then \ quiet_option='-q'; \ @@ -1027,9 +1085,9 @@ REARGUARD_ASC = \ ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \ tzdb-$(VERSION).tar.lz.asc -tarballs rearguard_tarballs traditional_tarballs \ +tarballs rearguard_tarballs tailored_tarballs traditional_tarballs \ signatures rearguard_signatures traditional_signatures: \ - version set-timestamps.out rearguard.zi + version set-timestamps.out rearguard.zi vanguard.zi VERSION=`cat version` && \ $(MAKE) AWK='$(AWK)' VERSION="$$VERSION" $@_version @@ -1042,6 +1100,8 @@ rearguard_tarballs_version: \ tzdata$(VERSION)-rearguard.tar.gz traditional_tarballs_version: \ tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz +tailored_tarballs_version: \ + tzdata$(VERSION)-tailored.tar.gz signatures_version: $(ALL_ASC) rearguard_signatures_version: $(REARGUARD_ASC) traditional_signatures_version: $(TRADITIONAL_ASC) @@ -1055,34 +1115,76 @@ tzcode$(VERSION).tar.gz: set-timestamps.out tzdata$(VERSION).tar.gz: set-timestamps.out LC_ALL=C && export LC_ALL && \ - tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \ + tar $(TARFLAGS) -cf - $(TZDATA_DIST) | \ gzip $(GZIPFLAGS) >$@.out mv $@.out $@ +# Create empty files with a reproducible timestamp. +CREATE_EMPTY = TZ=UTC0 touch -mt 202010122253.00 + +# The obsolescent *rearguard* targets and related macros are present +# for backwards compatibility with tz releases 2018e through 2022a. +# They should go away eventually. To build rearguard tarballs you +# can instead use 'make DATAFORM=rearguard tailored_tarballs'. tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out - rm -fr tzdata$(VERSION)-rearguard.dir - mkdir tzdata$(VERSION)-rearguard.dir - ln $(COMMON) $(DATA) $(MISC) tzdata$(VERSION)-rearguard.dir - cd tzdata$(VERSION)-rearguard.dir && \ - rm -f $(TDATA) $(PACKRATDATA) version + rm -fr $@.dir + mkdir $@.dir + ln $(TZDATA_DIST) $@.dir + cd $@.dir && rm -f $(TDATA) $(PACKRATDATA) version for f in $(TDATA) $(PACKRATDATA); do \ - rearf=tzdata$(VERSION)-rearguard.dir/$$f; \ + rearf=$@.dir/$$f; \ $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \ $(SET_TIMESTAMP_DEP) $$rearf ziguard.awk $$f || exit; \ done - sed '1s/$$/-rearguard/' \ - tzdata$(VERSION)-rearguard.dir/version + sed '1s/$$/-rearguard/' $@.dir/version : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. - TZ=UTC0 touch -mt 202010122253.00 \ - tzdata$(VERSION)-rearguard.dir/pacificnew - touch -cmr version tzdata$(VERSION)-rearguard.dir/version + $(CREATE_EMPTY) $@.dir/pacificnew + touch -cmr version $@.dir/version LC_ALL=C && export LC_ALL && \ - (cd tzdata$(VERSION)-rearguard.dir && \ + (cd $@.dir && \ tar $(TARFLAGS) -cf - \ - $(COMMON) $(DATA) $(MISC) pacificnew | \ + $(TZDATA_DIST) pacificnew | \ gzip $(GZIPFLAGS)) >$@.out mv $@.out $@ +# Create a tailored tarball suitable for TZUpdater and compatible tools. +# For example, 'make DATAFORM=vanguard tailored_tarballs' makes a tarball +# useful for testing whether TZUpdater supports vanguard form. +# The generated tarball is not byte-for-byte equivalent to a hand-tailored +# traditional tarball, as data entries are put into 'etcetera' even if they +# came from some other source file. However, the effect should be the same +# for ordinary use, which reads all the source files. +tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out + rm -fr $@.dir + mkdir $@.dir + : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. + cd $@.dir && \ + $(CREATE_EMPTY) $(PRIMARY_YDATA) $(NDATA) backward \ + `test $(DATAFORM) = vanguard || echo pacificnew` + (grep '^#' tzdata.zi && echo && cat $(DATAFORM).zi) \ + >$@.dir/etcetera + touch -cmr tzdata.zi $@.dir/etcetera + sed -n \ + -e '/^# *version *\(.*\)/h' \ + -e '/^# *ddeps */H' \ + -e '$$!d' \ + -e 'g' \ + -e 's/^# *version *//' \ + -e 's/\n# *ddeps */-/' \ + -e 's/ /-/g' \ + -e 'p' \ + $@.dir/version + touch -cmr version $@.dir/version + links= && \ + for file in $(TZDATA_DIST); do \ + test -f $@.dir/$$file || links="$$links $$file"; \ + done && \ + ln $$links $@.dir + LC_ALL=C && export LC_ALL && \ + (cd $@.dir && \ + tar $(TARFLAGS) -cf - * | gzip $(GZIPFLAGS)) >$@.out + mv $@.out $@ + tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out rm -fr tzdb-$(VERSION) mkdir tzdb-$(VERSION) @@ -1130,17 +1232,18 @@ zdump.o: version.h zic.o: private.h tzfile.h version.h .PHONY: ALL INSTALL all -.PHONY: check check_time_t_alternatives +.PHONY: check check_mild check_time_t_alternatives .PHONY: check_web check_zishrink .PHONY: clean clean_misc dummy.zd force_tzs .PHONY: install install_data maintainer-clean names -.PHONY: posix_only posix_packrat posix_right public +.PHONY: posix_only posix_right public .PHONY: rearguard_signatures rearguard_signatures_version .PHONY: rearguard_tarballs rearguard_tarballs_version .PHONY: right_only right_posix signatures signatures_version .PHONY: tarballs tarballs_version .PHONY: traditional_signatures traditional_signatures_version .PHONY: traditional_tarballs traditional_tarballs_version +.PHONY: tailored_tarballs tailored_tarballs_version .PHONY: typecheck .PHONY: zonenames zones .PHONY: $(ZDS) diff --git a/inst/tzdata/NEWS b/inst/tzdata/NEWS index ae44be2..b54538a 100644 --- a/inst/tzdata/NEWS +++ b/inst/tzdata/NEWS @@ -1,5 +1,482 @@ News for the tz database +Release 2023c - 2023-03-28 12:42:14 -0700 + + Changes to past and future timestamps + + Model Lebanon's DST chaos by reverting data to tzdb 2023a. + (Thanks to Rany Hany for the heads-up.) + + +Release 2023b - 2023-03-23 19:50:38 -0700 + + Changes to future timestamps + + This year Lebanon springs forward April 20/21 not March 25/26. + (Thanks to Saadallah Itani.) [This was reverted in 2023c.] + + +Release 2023a - 2023-03-22 12:39:33 -0700 + + Briefly: + Egypt now uses DST again, from April through October. + This year Morocco springs forward April 23, not April 30. + Palestine delays the start of DST this year. + Much of Greenland still uses DST from 2024 on. + America/Yellowknife now links to America/Edmonton. + tzselect can now use current time to help infer timezone. + The code now defaults to C99 or later. + Fix use of C23 attributes. + + Changes to future timestamps + + Starting in 2023, Egypt will observe DST from April's last Friday + through October's last Thursday. (Thanks to Ahmad ElDardiry.) + Assume the transition times are 00:00 and 24:00, respectively. + + In 2023 Morocco's spring-forward transition after Ramadan + will occur April 23, not April 30. (Thanks to Milamber.) + Adjust predictions for future years accordingly. This affects + predictions for 2023, 2031, 2038, and later years. + + This year Palestine will delay its spring forward from + March 25 to April 29 due to Ramadan. (Thanks to Heba Hamad.) + Make guesses for future Ramadans too. + + Much of Greenland, represented by America/Nuuk, will continue to + observe DST using European Union rules. When combined with + Greenland's decision not to change the clocks in fall 2023, + America/Nuuk therefore changes from -03/-02 to -02/-01 effective + 2023-10-29 at 01:00 UTC. (Thanks to Thomas M. Steenholdt.) + This change from 2022g doesn't affect timestamps until 2024-03-30, + and doesn't affect tm_isdst until 2023-03-25. + + Changes to past timestamps + + America/Yellowknife has changed from a Zone to a backward + compatibility Link, as it no longer differs from America/Edmonton + since 1970. (Thanks to Almaz Mingaleev.) This affects some + pre-1948 timestamps. The old data are now in 'backzone'. + + Changes to past time zone abbreviations + + When observing Moscow time, Europe/Kirov and Europe/Volgograd now + use the abbreviations MSK/MSD instead of numeric abbreviations, + for consistency with other timezones observing Moscow time. + + Changes to code + + You can now tell tzselect local time, to simplify later choices. + Select the 'time' option in its first prompt. + + You can now compile with -DTZNAME_MAXIMUM=N to limit time zone + abbreviations to N bytes (default 255). The reference runtime + library now rejects POSIX-style TZ strings that contain longer + abbreviations, treating them as UTC. Previously the limit was + platform dependent and abbreviations were silently truncated to + 16 bytes even when the limit was greater than 16. + + The code by default is now designed for C99 or later. To build in + a C89 environment, compile with -DPORT_TO_C89. To support C89 + callers of the tzcode library, compile with -DSUPPORT_C89. The + two new macros are transitional aids planned to be removed in a + future version, when C99 or later will be required. + + The code now builds again on pre-C99 platforms, if you compile + with -DPORT_TO_C89. This fixes a bug introduced in 2022f. + + On C23-compatible platforms tzcode no longer uses syntax like + 'static [[noreturn]] void usage(void);'. Instead, it uses + '[[noreturn]] static void usage(void);' as strict C23 requires. + (Problem reported by Houge Langley.) + + The code's functions now constrain their arguments with the C + 'restrict' keyword consistently with their documentation. + This may allow future optimizations. + + zdump again builds standalone with ckdadd and without setenv, + fixing a bug introduced in 2022g. (Problem reported by panic.) + + leapseconds.awk can now process a leap seconds file that never + expires; this might be useful if leap seconds are discontinued. + + Changes to commentary + + tz-link.html has a new section "Coordinating with governments and + distributors". (Thanks to Neil Fuller for some of the text.) + + To improve tzselect diagnostics, zone1970.tab's comments column is + now limited to countries that have multiple timezones. + + Note that leap seconds are planned to be discontinued by 2035. + + +Release 2022g - 2022-11-29 08:58:31 -0800 + + Briefly: + The northern edge of Chihuahua changes to US timekeeping. + Much of Greenland stops changing clocks after March 2023. + Fix some pre-1996 timestamps in northern Canada. + C89 is now deprecated; please use C99 or later. + Portability fixes for AIX, libintl, MS-Windows, musl, z/OS + In C code, use more C23 features if available. + C23 timegm now supported by default + Fixes for unlikely integer overflows + + Changes to future timestamps + + In the Mexican state of Chihuahua, the border strip near the US + will change to agree with nearby US locations on 2022-11-30. + The strip's western part, represented by Ciudad Juárez, switches + from -06 all year to -07/-06 with US DST rules, like El Paso, TX. + The eastern part, represented by Ojinaga, will observe US DST next + year, like Presidio, TX. (Thanks to Heitor David Pinto.) + A new Zone America/Ciudad_Juarez splits from America/Ojinaga. + + Much of Greenland, represented by America/Nuuk, stops observing + winter time after March 2023, so its daylight saving time becomes + standard time. (Thanks to Jonas Nyrup and Jürgen Appel.) + + Changes to past timestamps + + Changes for pre-1996 northern Canada (thanks to Chris Walton): + + Merge America/Iqaluit and America/Pangnirtung into the former, + with a backward compatibility link for the latter name. + There is no good evidence the two locations differ since 1970. + This change affects pre-1996 America/Pangnirtung timestamps. + + Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and + Yellowknife did not observe DST in 1965, and did observe DST + from 1972 through 1979. + + Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28. + + Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00. + (Thanks to Alois Treindl.) + + Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time), + not 24:00 local time. (Thanks to Geoff Clare via Robert Elz.) + + Changes to code + + Although tzcode still works with C89, bugs found in recent routine + maintenance indicate that bitrot has set in and that in practice + C89 is no longer used to build tzcode. As it is a maintenance + burden, support for C89 is planned to be removed soon. Instead, + please use compilers compatible with C99, C11, C17, or C23. + + timegm, which tzcode implemented in 1989, will finally be + standardized 34 years later as part of C23, so timegm is now + supported even if STD_INSPIRED is not defined. + + Fix bug in zdump's tzalloc emulation on hosts that lack tm_zone. + (Problem reported by Đoàn Trần Công Danh.) + + Fix bug in zic on hosts where malloc(0) yields NULL on success. + (Problem reported by Tim McBrayer for AIX 6.1.) + + Fix zic configuration to avoid linkage failures on some platforms. + (Problems reported by Gilmore Davidson and Igor Ivanov.) + + Work around MS-Windows nmake incompatibility with POSIX. + (Problem reported by Manuela Friedrich.) + + Port mktime and strftime to debugging platforms where accessing + uninitialized data has undefined behavior (strftime problem + reported by Robert Elz). + + Check more carefully for unlikely integer overflows, preferring + C23 to overflow checking by hand, as the latter has + had obscure bugs. + + Changes to build procedure + + New Makefile rule check_mild that skips checking whether Link + lines are in the file 'backward'. (Inspired by a suggestion from + Stephen Colebourne.) + + +Release 2022f - 2022-10-28 18:04:57 -0700 + + Briefly: + Mexico will no longer observe DST except near the US border. + Chihuahua moves to year-round -06 on 2022-10-30. + Fiji no longer observes DST. + Move links to 'backward'. + In vanguard form, GMT is now a Zone and Etc/GMT a link. + zic now supports links to links, and vanguard form uses this. + Simplify four Ontario zones. + Fix a Y2438 bug when reading TZif data. + Enable 64-bit time_t on 32-bit glibc platforms. + Omit large-file support when no longer needed. + In C code, use some C23 features if available. + Remove no-longer-needed workaround for Qt bug 53071. + + Changes to future timestamps + + Mexico will no longer observe DST after 2022, except for areas + near the US border that continue to observe US DST rules. + On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves + from -07 (-06 with DST) to year-round -06, thus not changing + its clocks that day. The new law states that Chihuahua + near the US border no longer observes US DST. + (Thanks to gera for the heads-up about Chihuahua.) + + Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.) + For now, assume DST is suspended indefinitely. + + Changes to data + + Move links to 'backward' to ease and simplify link maintenance. + This affects generated data only if you use 'make BACKWARD='. + + GMT is now a Zone and Etc/GMT a link instead of vice versa, + as GMT is needed for leap second support whereas Etc/GMT is not. + However, this change exposes a bug in TZUpdater 2.3.2 so it is + present only in vanguard form for now. + + Vanguard form now uses links to links, as zic now supports this. + + Changes to past timestamps + + Simplify four Ontario zones, as most of the post-1970 differences + seem to have been imaginary. (Problem reported by Chris Walton.) + Move America/Nipigon, America/Rainy_River, and America/Thunder_Bay + to 'backzone'; backward-compatibility links still work, albeit + with some different timestamps before November 2005. + + Changes to code + + zic now supports links to links regardless of input line order. + For example, if Australia/Sydney is a Zone, the lines + Link Australia/Canberra Australia/ACT + Link Australia/Sydney Australia/Canberra + now work correctly, even though the shell commands + ln Australia/Canberra Australia/ACT + ln Australia/Sydney Australia/Canberra + would fail because the first command attempts to use a link + Australia/Canberra that does not exist until after the second + command is executed. Previously, zic had unspecified behavior if + a Link line's target was another link, and zic often misbehaved if + a Link line's target was a later Link line. + + Fix line number in zic's diagnostic for a link to a link. + + Fix a bug that caused localtime to mishandle timestamps starting + in the year 2438 when reading data generated by 'zic -b fat' when + distant-future DST transitions occur at times given in standard + time or in UT, not the usual case of local time. This occurs when + the corresponding .zi Rule lines specify DST transitions with TO + columns of 'max' and AT columns that end in 's' or 'u'. The + number 2438 comes from the 32-bit limit in the year 2038, plus the + 400-year Gregorian cycle. (Problem reported by Bradley White.) + + On glibc 2.34 and later, which optionally supports 64-bit time_t + on platforms like x86 where time_t was traditionally 32 bits, + default time_t to 64 instead of 32 bits. This lets functions like + localtime support timestamps after the year 2038, and fixes + year-2038 problems in zic when accessing files dated after 2038. + To continue to limit time_t to 32 bits on these platforms, use + "make CFLAGS='-D_TIME_BITS=32'". + + In C code, do not enable large-file support on platforms like AIX + and macOS that no longer need it now that tzcode does not use + off_t or related functions like 'stat'. Large-file support is + still enabled by default on GNU/Linux, as it is needed for 64-bit + time_t support. + + In C code, prefer C23 keywords to pre-C23 macros for alignof, + bool, false, and true. Also, use the following C23 features if + available: __has_include, unreachable. + + zic no longer works around Qt bug 53071, as the relevant Qt + releases have been out of support since 2019. This change affects + only fat TZif files, as thin files never had the workaround. + + zdump no longer modifies the environ vector when compiled on + platforms lacking tm_zone or when compiled with -DUSE_LTZ=0. + This avoid undefined behavior on POSIX platforms. + + +Release 2022e - 2022-10-11 11:13:02 -0700 + + Briefly: + Jordan and Syria switch from +02/+03 with DST to year-round +03. + + Changes to future timestamps + + Jordan and Syria are abandoning the DST regime and are changing to + permanent +03, so they will not fall back from +03 to +02 on + 2022-10-28. (Thanks to Steffen Thorsen and Issam Al-Zuwairi.) + + Changes to past timestamps + + On 1922-01-01 Tijuana adopted standard time at 00:00, not 01:00. + + Changes to past time zone abbreviations and DST flags + + The temporary advancement of clocks in central Mexico in summer + 1931 is now treated as daylight saving time, instead of as two + changes to standard time. + + +Release 2022d - 2022-09-23 12:02:57 -0700 + + Briefly: + Palestine transitions are now Saturdays at 02:00. + Simplify three Ukraine zones into one. + + Changes to future timestamps + + Palestine now springs forward and falls back at 02:00 on the + first Saturday on or after March 24 and October 24, respectively. + This means 2022 falls back 10-29 at 02:00, not 10-28 at 01:00. + (Thanks to Heba Hamad.) + + Changes to past timestamps + + Simplify three Ukraine zones to one, since the post-1970 + differences seem to have been imaginary. Move Europe/Uzhgorod and + Europe/Zaporozhye to 'backzone'; backward-compatibility links + still work, albeit with different timestamps before October 1991. + + +Release 2022c - 2022-08-15 17:47:18 -0700 + + Briefly: + Work around awk bug in FreeBSD, macOS, etc. + Improve tzselect on intercontinental Zones. + + Changes to code + + Work around a bug in onetrueawk that broke commands like + 'make traditional_tarballs' on FreeBSD, macOS, etc. + (Problem reported by Deborah Goldsmith.) + + Add code to tzselect that uses experimental structured comments in + zone1970.tab to clarify whether Zones like Africa/Abidjan and + Europe/Istanbul cross continent or ocean boundaries. + (Inspired by a problem reported by Peter Krefting.) + + Fix bug with 'zic -d /a/b/c' when /a is unwritable but the + directory /a/b already exists. + + Remove zoneinfo2tdf.pl, as it was unused and triggered false + malware alarms on some email servers. + + +Release 2022b - 2022-08-10 15:38:32 -0700 + + Briefly: + Chile's DST is delayed by a week in September 2022. + Iran no longer observes DST after 2022. + Rename Europe/Kiev to Europe/Kyiv. + New zic -R option + Vanguard form now uses %z. + Finish moving duplicate-since-1970 zones to 'backzone'. + New build option PACKRATLIST + New tailored_tarballs target, replacing rearguard_tarballs + + Changes to future timestamps + + Chile's 2022 DST start is delayed from September 4 to September 11. + (Thanks to Juan Correa.) + + Iran plans to stop observing DST permanently, after it falls back + on 2022-09-21. (Thanks to Ali Mirjamali.) + + Changes to past timestamps + + Finish moving to 'backzone' the location-based zones whose + timestamps since 1970 are duplicates; adjust links accordingly. + This change ordinarily affects only pre-1970 timestamps, and with + the new PACKRATLIST option it does not affect any timestamps. + In this round the affected zones are Antarctica/Vostok, + Asia/Brunei, Asia/Kuala_Lumpur, Atlantic/Reykjavik, + Europe/Amsterdam, Europe/Copenhagen, Europe/Luxembourg, + Europe/Monaco, Europe/Oslo, Europe/Stockholm, Indian/Christmas, + Indian/Cocos, Indian/Kerguelen, Indian/Mahe, Indian/Reunion, + Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Pohnpei, + Pacific/Wake and Pacific/Wallis, and the affected links are + Arctic/Longyearbyen, Atlantic/Jan_Mayen, Iceland, Pacific/Ponape, + Pacific/Truk, and Pacific/Yap. + + From fall 1994 through fall 1995, Shanks wrote that Crimea's + DST transitions were at 02:00 standard time, not at 00:00. + (Thanks to Michael Deckers.) + + Iran adopted standard time in 1935, not 1946. In 1977 it observed + DST from 03-21 23:00 to 10-20 24:00; its 1978 transitions were on + 03-24 and 08-05, not 03-20 and 10-20; and its spring 1979 + transition was on 05-27, not 03-21. + (Thanks to Roozbeh Pournader and Francis Santoni.) + + Chile's observance of -04 from 1946-08-29 through 1947-03-31 was + considered DST, not standard time. Santiago and environs had moved + their clocks back to rejoin the rest of mainland Chile; put this + change at the end of 1946-08-28. (Thanks to Michael Deckers.) + + Some old, small clock transitions have been removed, as people at + the time did not change their clocks. This affects Asia/Hong_Kong + in 1904, Asia/Ho_Chi_Minh in 1906, and Europe/Dublin in 1880. + + Changes to zone name + + Rename Europe/Kiev to Europe/Kyiv, as "Kyiv" is more common in + English now. Spelling of other names in Ukraine has not yet + demonstrably changed in common English practice so for now these + names retain old spellings, as in other countries (e.g., + Europe/Prague not "Praha", and Europe/Sofia not "Sofiya"). + + Changes to code + + zic has a new option '-R @N' to output explicit transitions < N. + (Need suggested by Almaz Mingaleev.) + + 'zic -r @N' no longer outputs bad data when N < first transition. + (Problem introduced in 2021d and reported by Peter Krefting.) + + zic now checks its input for NUL bytes and unterminated lines, and + now supports input line lengths up to 2048 (not 512) bytes. + + gmtime and related code now use the abbreviation "UTC" not "GMT". + POSIX is being revised to require this. + + When tzset and related functions set vestigial static variables + like tzname, they now prefer specified timestamps to unspecified ones. + (Problem reported by Almaz Mingaleev.) + + zic no longer complains "can't determine time zone abbreviation to + use just after until time" when a transition to a new standard + time occurs simultaneously with the first DST fallback transition. + + Changes to build procedure + + Source data in vanguard form now uses the %z notation, introduced + in release 2015f. For example, for America/Sao_Paulo vanguard + form contains the zone continuation line "-3:00 Brazil %z", which + is simpler and more reliable than the line "-3:00 Brazil -03/-02" + used in main and rearguard forms. The plan is for the main form + to use %z eventually; in the meantime maintainers of zi parsers + are encouraged to test the parsers on vanguard.zi. + + The Makefile has a new PACKRATLIST option to select a subset of + 'backzone'. For example, 'make PACKRATDATA=backzone + PACKRATLIST=zone.tab' now generates TZif files identical to those + of the global-tz project. + + The Makefile has a new tailored_tarballs target for generating + special-purpose tarballs. It generalizes and replaces the + rearguard_tarballs target and related targets and macros, which + are now obsolescent. + + 'make install' now defaults LOCALTIME to Factory not GMT, + which means the default abbreviation is now "-00" not "GMT". + + Remove the posix_packrat target, marked obsolescent in 2016a. + + Release 2022a - 2022-03-15 23:02:01 -0700 Briefly: @@ -161,7 +638,7 @@ Release 2021b - 2021-09-24 16:23:00 -0700 Rename Pacific/Enderbury to Pacific/Kanton. When we added Enderbury in 1993, we did not know that it is uninhabited and that Kanton (population two dozen) is the only inhabited location in - that timezone. The old name is now a backward-compatility link. + that timezone. The old name is now a backward-compatibility link. Changes to past timestamps @@ -230,7 +707,7 @@ Release 2021b - 2021-09-24 16:23:00 -0700 Starting with 2020a, zic -L truncated its output according to the "Expires" directive or "#expires" comment in the leapseconds file. The resulting TZif files omitted daylight saving transitions after - the leap second table expired, which led to far less-accurate + the leap second table expired, which led to far less accurate predictions of times after the expiry. Although future timestamps cannot be converted accurately in the presence of leap seconds, it is more accurate to convert near-future timestamps with a few @@ -250,7 +727,7 @@ Release 2021b - 2021-09-24 16:23:00 -0700 zic -L LEAPFILE -r @LO no longer generates an invalid TZif file that omits leap second information for the range LO..B when LO falls between two leap seconds A and B. Instead, it generates a - TZif version 4 file that represents the previously-missing + TZif version 4 file that represents the previously missing information. The TZif reader now allows the leap second table to begin with a @@ -304,7 +781,7 @@ Release 2021b - 2021-09-24 16:23:00 -0700 Fix a bug with 'zic -r @X' when X is a negative leap second that has a nonnegative correction. Without the fix, the output file was truncated so that X appeared to be a positive leap second. - Fix a similar, even-less-likely bug when truncating at a positive + Fix a similar, even less likely bug when truncating at a positive leap second that has a nonpositive correction. zic -r now reports an error if given rolling leap seconds, as this @@ -325,7 +802,7 @@ Release 2021b - 2021-09-24 16:23:00 -0700 fixing a bug introduced in 2014g. zdump -v now outputs timestamps at boundaries of what localtime - and gmtime can represent, instead of the less-useful timestamps + and gmtime can represent, instead of the less useful timestamps one day after the minimum and one day before the maximum. (Thanks to Arthur David Olson for prototype code, and to Manuela Friedrich for debugging help.) @@ -1315,7 +1792,7 @@ Release 2018b - 2018-01-17 23:24:48 -0800 Changes to build procedure The distribution now contains the file 'pacificnew' again. - This file was inadvertantly omitted in the 2018a distribution. + This file was inadvertently omitted in the 2018a distribution. (Problem reported by Matias Fonzo.) @@ -1945,7 +2422,7 @@ Release 2016g - 2016-09-13 08:56:38 -0700 names internally. zdump has a new -i option to generate transitions in a - more-compact but still human-readable format. This option is + smaller but still human-readable format. This option is experimental, and the output format may change in future versions. (Thanks to Jon Skeet for suggesting that an option was needed, and thanks to Tim Parenti and Chris Rovick for further comments.) @@ -1967,7 +2444,7 @@ Release 2016g - 2016-09-13 08:56:38 -0700 release 2016g, the version number is now something like '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. Tagged releases use the same version number format as before, - e.g., '2016g'. To support the more-accurate version number, its + e.g., '2016g'. To support the more accurate version number, its specification has moved from a line in the Makefile to a new source file 'version'. @@ -2598,7 +3075,7 @@ Release 2014i - 2014-10-21 22:04:57 -0700 Since Belarus is not changing its clocks even though Moscow is, the time zone abbreviation in Europe/Minsk is changing from FET - to its more-traditional value MSK on 2014-10-26 at 01:00. + to its more traditional value MSK on 2014-10-26 at 01:00. (Thanks to Alexander Bokovoy for the heads-up about Belarus.) The new abbreviation IDT stands for the pre-1976 use of UT +08 in @@ -2690,7 +3167,7 @@ Release 2014h - 2014-09-25 18:59:03 -0700 Changes affecting build procedure - 'make check' now checks better for properly-sorted data. + 'make check' now checks better for properly sorted data. Changes affecting documentation and commentary @@ -3191,7 +3668,7 @@ Release 2014a - 2014-03-07 23:30:29 -0800 Changes affecting past timestamps - Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. + Fiji ended DST on 2014-01-19 at 02:00, not the previously scheduled 03:00. (Thanks to Steffen Thorsen.) Ukraine switched from Moscow to Eastern European time on 1990-07-01 @@ -3445,7 +3922,7 @@ Release 2013e - 2013-09-19 23:50:04 -0700 Allow POSIX-like TZ strings where the transition time's hour can range from -167 through 167, instead of the POSIX-required 0 through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the - new Fiji rules. This is a more-compact way to represent + new Fiji rules. This is a more compact way to represent far-future timestamps for America/Godthab, America/Santiago, Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by @@ -3453,7 +3930,7 @@ Release 2013e - 2013-09-19 23:50:04 -0700 Allow POSIX-like TZ strings where daylight saving time is in effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western - Argentina Summer Time all year. This supports a more-compact way + Argentina Summer Time all year. This supports a more compact way to represent the 2013d data for America/Argentina/San_Luis. Because of the change for San Luis noted above this change does not affect the current data. (Thanks to Andrew Main (Zefram) for @@ -3542,13 +4019,13 @@ Release 2013e - 2013-09-19 23:50:04 -0700 zdump now outputs "UT" when referring to Universal Time, not "UTC". "UTC" does not make sense for timestamps that predate the introduction - of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen + of UTC, whereas "UT", a more generic term, does. (Thanks to Steve Allen for clarifying UT vs UTC.) Data changes affecting behavior of tzselect and similar programs - Country code BQ is now called the more-common name "Caribbean Netherlands" - rather than the more-official "Bonaire, St Eustatius & Saba". + Country code BQ is now called the more common name "Caribbean Netherlands" + rather than the more official "Bonaire, St Eustatius & Saba". Remove from zone.tab the names America/Montreal, America/Shiprock, and Antarctica/South_Pole, as they are equivalent to existing @@ -3732,7 +4209,7 @@ Release 2013c - 2013-04-19 16:17:40 -0700 Macquarie Island is politically part of Australia, not Antarctica. (Thanks to Tobias Conradi.) - Sort Macquarie more-consistently with other parts of Australia. + Sort Macquarie more consistently with other parts of Australia. (Thanks to Tim Parenti.) @@ -4387,7 +4864,7 @@ Release 2007a - 2007-01-08 12:28:29 -0500 changes by Paul Eggert - Derick Rethan's Asmara change + Derick Rethans's Asmara change Oscar van Vlijmen's Easter Island local mean time change @@ -4956,7 +5433,7 @@ Release data1998g - 1998-08-11 03:28:35 -0000 Release data1998f - 1998-07-20 13:50:00 -0000 [tzdata1998f.tar.gz is missing!] - Update the "leapseconds" file to include the newly-announced + Update the "leapseconds" file to include the newly announced insertion at the end of 1998. diff --git a/inst/tzdata/africa b/inst/tzdata/africa index 4bf491e..6cf4e39 100644 --- a/inst/tzdata/africa +++ b/inst/tzdata/africa @@ -97,22 +97,6 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 16 0:00 Algeria WE%sT 1981 May 1:00 - CET -# Angola -# Benin -# See Africa/Lagos. - -# Botswana -# See Africa/Maputo. - -# Burkina Faso -# See Africa/Abidjan. - -# Burundi -# See Africa/Maputo. - -# Cameroon -# See Africa/Lagos. - # Cape Verde / Cabo Verde # # From Paul Eggert (2018-02-16): @@ -127,9 +111,6 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia -2:00 - -02 1975 Nov 25 2:00 -1:00 - -01 -# Central African Republic -# See Africa/Lagos. - # Chad # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena @@ -137,39 +118,36 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena 1:00 1:00 WAST 1980 Mar 8 1:00 - WAT -# Comoros -# See Africa/Nairobi. - -# Democratic Republic of the Congo -# See Africa/Lagos for the western part and Africa/Maputo for the eastern. +# Burkina Faso +# Côte d'Ivoire (Ivory Coast) +# The Gambia +# Ghana +# Guinea +# Iceland +# Mali +# Mauritania +# St Helena +# Senegal +# Sierra Leone +# Togo -# Republic of the Congo -# See Africa/Lagos. +# The other parts of the St Helena territory are similar: +# Tristan da Cunha: on GMT, say Whitman and the CIA +# Ascension: on GMT, say the USNO (1995-12-21) and the CIA +# Gough (scientific station since 1955; sealers wintered previously): +# on GMT, says the CIA +# Inaccessible, Nightingale: uninhabited -# Côte d'Ivoire / Ivory Coast # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Abidjan -0:16:08 - LMT 1912 0:00 - GMT -Link Africa/Abidjan Africa/Accra # Ghana -Link Africa/Abidjan Africa/Bamako # Mali -Link Africa/Abidjan Africa/Banjul # The Gambia -Link Africa/Abidjan Africa/Conakry # Guinea -Link Africa/Abidjan Africa/Dakar # Senegal -Link Africa/Abidjan Africa/Freetown # Sierra Leone -Link Africa/Abidjan Africa/Lome # Togo -Link Africa/Abidjan Africa/Nouakchott # Mauritania -Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso -Link Africa/Abidjan Atlantic/St_Helena # St Helena - -# Djibouti -# See Africa/Nairobi. ############################################################################### # Egypt # Milne says Cairo used 2:05:08.9, the local mean time of the Abbasizeh -# observatory; round to nearest. Milne also says that the official time for +# observatory. Milne also says that the official time for # Egypt was mean noon at the Great Pyramid, 2:04:30.5, but apparently this # did not apply to Cairo, Alexandria, or Port Said. @@ -343,6 +321,14 @@ Rule Egypt 2007 only - Sep Thu>=1 24:00 0 - # From Mina Samuel (2016-07-04): # Egyptian government took the decision to cancel the DST, +# From Ahmad ElDardiry (2023-03-01): +# Egypt officially announced today that daylight savings will be +# applied from last Friday of April to last Thursday of October. +# From Paul Eggert (2023-03-01): +# Assume transitions are at 00:00 and 24:00 respectively. +# From Amir Adib (2023-03-07): +# https://www.facebook.com/EgyptianCabinet/posts/638829614954129/ + Rule Egypt 2008 only - Aug lastThu 24:00 0 - Rule Egypt 2009 only - Aug 20 24:00 0 - Rule Egypt 2010 only - Aug 10 24:00 0 - @@ -352,38 +338,14 @@ Rule Egypt 2014 only - May 15 24:00 1:00 S Rule Egypt 2014 only - Jun 26 24:00 0 - Rule Egypt 2014 only - Jul 31 24:00 1:00 S Rule Egypt 2014 only - Sep lastThu 24:00 0 - +Rule Egypt 2023 max - Apr lastFri 0:00 1:00 S +Rule Egypt 2023 max - Oct lastThu 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF 2:05:08.9 Zone Africa/Cairo 2:05:09 - LMT 1900 Oct 2:00 Egypt EE%sT -# Equatorial Guinea -# See Africa/Lagos. - -# Eritrea -# See Africa/Nairobi. - -# Eswatini (formerly Swaziland) -# See Africa/Johannesburg. - -# Ethiopia -# See Africa/Nairobi. -# -# Unfortunately tzdb records only Western clock time in use in Ethiopia, -# as the tzdb format is not up to properly recording a common Ethiopian -# timekeeping practice that is based on solar time. See: -# Mortada D. If you have a meeting in Ethiopia, you'd better double -# check the time. PRI's The World. 2015-01-30 15:15 -05. -# https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time - -# Gabon -# See Africa/Lagos. - -# The Gambia -# Ghana -# Guinea -# See Africa/Abidjan. - # Guinea-Bissau # # From Paul Eggert (2018-02-16): @@ -396,7 +358,16 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u -1:00 - -01 1975 0:00 - GMT +# Comoros +# Djibouti +# Eritrea +# Ethiopia # Kenya +# Madagascar +# Mayotte +# Somalia +# Tanzania +# Uganda # From P Chan (2020-10-24): # @@ -407,7 +378,7 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u # At midnight on 30 June 1928 the clocks throughout Kenya was put forward # half an hour by the Alteration of Time Ordinance, 1928. # https://gazettes.africa/archive/ke/1928/ke-government-gazette-dated-1928-05-11-no-28.pdf -# [Ordinance No. 11 of 1928, The Offical Gazette, 1928-06-26, p 813] +# [Ordinance No. 11 of 1928, The Official Gazette, 1928-06-26, p 813] # https://books.google.com/books?id=2S0S6os32ZUC&pg=PA813 # # The 1928 ordinance was repealed by the Alteration of Time (repeal) Ordinance, @@ -439,6 +410,14 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u # The 1908-05-01 announcement does not give an effective date, # so just say "1908 May". +# From Paul Eggert (2018-09-11): +# Unfortunately tzdb records only Western clock time in use in Ethiopia, +# as the tzdb format is not up to properly recording a common Ethiopian +# timekeeping practice that is based on solar time. See: +# Mortada D. If you have a meeting in Ethiopia, you'd better double +# check the time. PRI's The World. 2015-01-30 15:15 -05. +# https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time + # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Nairobi 2:27:16 - LMT 1908 May 2:30 - +0230 1928 Jun 30 24:00 @@ -446,18 +425,6 @@ Zone Africa/Nairobi 2:27:16 - LMT 1908 May 2:30 - +0230 1936 Dec 31 24:00 2:45 - +0245 1942 Jul 31 24:00 3:00 - EAT -Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia -Link Africa/Nairobi Africa/Asmara # Eritrea -Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania -Link Africa/Nairobi Africa/Djibouti -Link Africa/Nairobi Africa/Kampala # Uganda -Link Africa/Nairobi Africa/Mogadishu # Somalia -Link Africa/Nairobi Indian/Antananarivo # Madagascar -Link Africa/Nairobi Indian/Comoro -Link Africa/Nairobi Indian/Mayotte - -# Lesotho -# See Africa/Johannesburg. # Liberia # @@ -472,7 +439,7 @@ Link Africa/Nairobi Indian/Mayotte # President William R. Tolbert, Jr., July 23, 1971-July 31, 1972. # Monrovia: Executive Mansion. # -# Use the abbreviation "MMT" before 1972, as the more-accurate numeric +# Use the abbreviation "MMT" before 1972, as the more accurate numeric # abbreviation "-004430" would be one byte over the POSIX limit. # # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -538,16 +505,6 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920 1:00 Libya CE%sT 2013 Oct 25 2:00 2:00 - EET -# Madagascar -# See Africa/Nairobi. - -# Malawi -# See Africa/Maputo. - -# Mali -# Mauritania -# See Africa/Abidjan. - # Mauritius # From Steffen Thorsen (2008-06-25): @@ -619,8 +576,8 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920 # DST the coming summer... # # Some sources, in French: -# http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heure-d%E2%80%99%C3%A9t%C3%A9-ne-sera-pas-appliqu%C3%A9e-cette-ann%C3%A9e-%C2%BB -# http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-%C3%A9nergie-de-l-heure-d-%C3%A9t%C3%A9-ont-%C3%A9t%C3%A9-atteints- +# http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-«-L%E2%80%99heure-d%E2%80%99été-ne-sera-pas-appliquée-cette-année-» +# http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-économie-d-énergie-de-l-heure-d-été-ont-été-atteints- # # Our wrap-up: # https://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html @@ -641,8 +598,6 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Agalega Is, Rodriguez # no information; probably like Indian/Mauritius -# Mayotte -# See Africa/Nairobi. # Morocco # See Africa/Ceuta for Spanish Morocco. @@ -753,7 +708,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # More articles in the press # https://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html # http://www.lematin.ma/Actualite/Express/Article.asp?id=148923 -# http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT%2B1-a-partir-de-dim +# http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT+1-a-partir-de-dim # From Petr Machata (2011-03-30): # They have it written in English here: @@ -768,7 +723,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # According to Infomédiaire web site from Morocco (infomediaire.ma), # on March 9, 2012, (in French) Heure légale: # Le Maroc adopte officiellement l'heure d'été -# http://www.infomediaire.ma/news/maroc/heure-l%C3%A9gale-le-maroc-adopte-officiellement-lheure-d%C3%A9t%C3%A9 +# http://www.infomediaire.ma/news/maroc/heure-légale-le-maroc-adopte-officiellement-lheure-dété # Governing Council adopted draft decree, that Morocco DST starts on # the last Sunday of March (March 25, 2012) and ends on # last Sunday of September (September 30, 2012) @@ -892,19 +847,28 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Friday or Saturday (and so the 2 days off are on a weekend), the next time # shift will be the next weekend. # -# From Paul Eggert (2020-05-31): +# From Milamber (2021-03-31, 2022-03-10): +# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076 +# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/ +# +# From Milamber (2023-03-14, 2023-03-15): +# The return to legal GMT time will take place this Sunday, March 19 at 3 a.m. +# ... the return to GMT+1 will be made on Sunday April 23, 2023 at 2 a.m. +# https://www.mmsp.gov.ma/fr/actualites/passage-à-l%E2%80%99heure-gmt-à-partir-du-dimanche-19-mars-2023 +# +# From Paul Eggert (2023-03-14): # For now, guess that in the future Morocco will fall back at 03:00 # the last Sunday before Ramadan, and spring forward at 02:00 the -# first Sunday after two days after Ramadan. To implement this, +# first Sunday after one day after Ramadan. To implement this, # transition dates and times for 2019 through 2087 were determined by -# running the following program under GNU Emacs 26.3. (This algorithm +# running the following program under GNU Emacs 28.2. (This algorithm # also produces the correct transition dates for 2016 through 2018, # though the times differ due to Morocco's time zone change in 2018.) # (let ((islamic-year 1440)) # (require 'cal-islam) # (while (< islamic-year 1511) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (+ 2 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) +# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) # (sunday 0)) # (while (/= sunday (mod (setq a (1- a)) 7))) # (while (/= sunday (mod b 7)) @@ -918,10 +882,6 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) # (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) # (setq islamic-year (+ 1 islamic-year)))) -# -# From Milamber (2021-03-31, 2022-03-10), confirming these predictions: -# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076 -# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/ # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 - @@ -974,7 +934,7 @@ Rule Morocco 2021 only - May 16 2:00 0 - Rule Morocco 2022 only - Mar 27 3:00 -1:00 - Rule Morocco 2022 only - May 8 2:00 0 - Rule Morocco 2023 only - Mar 19 3:00 -1:00 - -Rule Morocco 2023 only - Apr 30 2:00 0 - +Rule Morocco 2023 only - Apr 23 2:00 0 - Rule Morocco 2024 only - Mar 10 3:00 -1:00 - Rule Morocco 2024 only - Apr 14 2:00 0 - Rule Morocco 2025 only - Feb 23 3:00 -1:00 - @@ -990,7 +950,7 @@ Rule Morocco 2029 only - Feb 18 2:00 0 - Rule Morocco 2029 only - Dec 30 3:00 -1:00 - Rule Morocco 2030 only - Feb 10 2:00 0 - Rule Morocco 2030 only - Dec 22 3:00 -1:00 - -Rule Morocco 2031 only - Feb 2 2:00 0 - +Rule Morocco 2031 only - Jan 26 2:00 0 - Rule Morocco 2031 only - Dec 14 3:00 -1:00 - Rule Morocco 2032 only - Jan 18 2:00 0 - Rule Morocco 2032 only - Nov 28 3:00 -1:00 - @@ -1006,7 +966,7 @@ Rule Morocco 2036 only - Nov 23 2:00 0 - Rule Morocco 2037 only - Oct 4 3:00 -1:00 - Rule Morocco 2037 only - Nov 15 2:00 0 - Rule Morocco 2038 only - Sep 26 3:00 -1:00 - -Rule Morocco 2038 only - Nov 7 2:00 0 - +Rule Morocco 2038 only - Oct 31 2:00 0 - Rule Morocco 2039 only - Sep 18 3:00 -1:00 - Rule Morocco 2039 only - Oct 23 2:00 0 - Rule Morocco 2040 only - Sep 2 3:00 -1:00 - @@ -1022,7 +982,7 @@ Rule Morocco 2044 only - Aug 28 2:00 0 - Rule Morocco 2045 only - Jul 9 3:00 -1:00 - Rule Morocco 2045 only - Aug 20 2:00 0 - Rule Morocco 2046 only - Jul 1 3:00 -1:00 - -Rule Morocco 2046 only - Aug 12 2:00 0 - +Rule Morocco 2046 only - Aug 5 2:00 0 - Rule Morocco 2047 only - Jun 23 3:00 -1:00 - Rule Morocco 2047 only - Jul 28 2:00 0 - Rule Morocco 2048 only - Jun 7 3:00 -1:00 - @@ -1038,7 +998,7 @@ Rule Morocco 2052 only - Jun 2 2:00 0 - Rule Morocco 2053 only - Apr 13 3:00 -1:00 - Rule Morocco 2053 only - May 25 2:00 0 - Rule Morocco 2054 only - Apr 5 3:00 -1:00 - -Rule Morocco 2054 only - May 17 2:00 0 - +Rule Morocco 2054 only - May 10 2:00 0 - Rule Morocco 2055 only - Mar 28 3:00 -1:00 - Rule Morocco 2055 only - May 2 2:00 0 - Rule Morocco 2056 only - Mar 12 3:00 -1:00 - @@ -1054,7 +1014,7 @@ Rule Morocco 2060 only - Mar 7 2:00 0 - Rule Morocco 2061 only - Jan 16 3:00 -1:00 - Rule Morocco 2061 only - Feb 27 2:00 0 - Rule Morocco 2062 only - Jan 8 3:00 -1:00 - -Rule Morocco 2062 only - Feb 19 2:00 0 - +Rule Morocco 2062 only - Feb 12 2:00 0 - Rule Morocco 2062 only - Dec 31 3:00 -1:00 - Rule Morocco 2063 only - Feb 4 2:00 0 - Rule Morocco 2063 only - Dec 16 3:00 -1:00 - @@ -1070,7 +1030,7 @@ Rule Morocco 2067 only - Dec 11 2:00 0 - Rule Morocco 2068 only - Oct 21 3:00 -1:00 - Rule Morocco 2068 only - Dec 2 2:00 0 - Rule Morocco 2069 only - Oct 13 3:00 -1:00 - -Rule Morocco 2069 only - Nov 24 2:00 0 - +Rule Morocco 2069 only - Nov 17 2:00 0 - Rule Morocco 2070 only - Oct 5 3:00 -1:00 - Rule Morocco 2070 only - Nov 9 2:00 0 - Rule Morocco 2071 only - Sep 20 3:00 -1:00 - @@ -1086,7 +1046,7 @@ Rule Morocco 2075 only - Sep 15 2:00 0 - Rule Morocco 2076 only - Jul 26 3:00 -1:00 - Rule Morocco 2076 only - Sep 6 2:00 0 - Rule Morocco 2077 only - Jul 18 3:00 -1:00 - -Rule Morocco 2077 only - Aug 29 2:00 0 - +Rule Morocco 2077 only - Aug 22 2:00 0 - Rule Morocco 2078 only - Jul 10 3:00 -1:00 - Rule Morocco 2078 only - Aug 14 2:00 0 - Rule Morocco 2079 only - Jun 25 3:00 -1:00 - @@ -1096,13 +1056,13 @@ Rule Morocco 2080 only - Jul 21 2:00 0 - Rule Morocco 2081 only - Jun 1 3:00 -1:00 - Rule Morocco 2081 only - Jul 13 2:00 0 - Rule Morocco 2082 only - May 24 3:00 -1:00 - -Rule Morocco 2082 only - Jul 5 2:00 0 - +Rule Morocco 2082 only - Jun 28 2:00 0 - Rule Morocco 2083 only - May 16 3:00 -1:00 - Rule Morocco 2083 only - Jun 20 2:00 0 - Rule Morocco 2084 only - Apr 30 3:00 -1:00 - Rule Morocco 2084 only - Jun 11 2:00 0 - Rule Morocco 2085 only - Apr 22 3:00 -1:00 - -Rule Morocco 2085 only - Jun 3 2:00 0 - +Rule Morocco 2085 only - May 27 2:00 0 - Rule Morocco 2086 only - Apr 14 3:00 -1:00 - Rule Morocco 2086 only - May 19 2:00 0 - Rule Morocco 2087 only - Mar 30 3:00 -1:00 - @@ -1135,7 +1095,14 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún 0:00 Morocco +00/+01 2018 Oct 28 3:00 1:00 Morocco +01/+00 +# Botswana +# Burundi +# Democratic Republic of the Congo (eastern) +# Malawi # Mozambique +# Rwanda +# Zambia +# Zimbabwe # # Shanks gives 1903-03-01 for the transition to CAT. # Perhaps the 1911-05-26 Portuguese decree @@ -1145,14 +1112,6 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Maputo 2:10:20 - LMT 1903 Mar 2:00 - CAT -Link Africa/Maputo Africa/Blantyre # Malawi -Link Africa/Maputo Africa/Bujumbura # Burundi -Link Africa/Maputo Africa/Gaborone # Botswana -Link Africa/Maputo Africa/Harare # Zimbabwe -Link Africa/Maputo Africa/Kigali # Rwanda -Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo -Link Africa/Maputo Africa/Lusaka # Zambia - # Namibia @@ -1231,23 +1190,30 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 # 2:00 - CAT # End of rearguard section. -# Niger -# See Africa/Lagos. +# Angola +# Benin +# Cameroon +# Central African Republic +# Democratic Republic of the Congo (western) +# Republic of the Congo +# Equatorial Guinea +# Gabon +# Niger # Nigeria # From P Chan (2020-12-03): # GMT was adopted as the standard time of Lagos on 1905-07-01. # Lagos Weekly Record, 1905-06-24, p 3 -# http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446%2C5221%2C1931%2C1235 +# http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446,5221,1931,1235 # says "It is officially notified that on and after the 1st of July 1905 -# Greenwich Mean Solar Time will be adopted thought the Colony and +# Greenwich Mean Solar Time will be adopted throughout the Colony and # Protectorate, and that it will be necessary to put all clocks 13 minutes and # 35 seconds back, recording local mean time." # # It seemed that Lagos returned to LMT on 1908-07-01. # [The Lagos Standard], 1908-07-01, p 5 -# http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92%2C3590%2C3944%2C2523 +# http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92,3590,3944,2523 # says "Scarcely have the people become accustomed to this new time, when # another official notice has now appeared announcing that from and after the # 1st July next, return will be made to local mean time." @@ -1259,7 +1225,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 # https://libsysdigi.library.illinois.edu/ilharvest/Africana/Books2011-05/3064634/3064634_1914/3064634_1914_opt.pdf#page=27 # "On January 1st [1914], a universal standard time for Nigeria was adopted, # viz., half an hour fast on Greenwich mean time, corresponding to the meridian -# 7 [degrees] 30' E. long." +# 7° 30' E. long." # Lloyd's Register of Shipping (1915) says "Hitherto the time observed in Lagos # was the local mean time. On 1st January, 1914, standard time for the whole of # Nigeria was introduced ... Lagos time has been advanced about 16 minutes @@ -1277,7 +1243,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 # The Lagos Weekly Record, 1919-09-20, p 3 details discussion on the first # reading of this Bill by the Legislative Council of the Colony of Nigeria on # Thursday 1919-08-28: -# http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261%2C3408%2C2994%2C1915 +# http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261,3408,2994,1915 # "The proposal is that the Globe should be divided into twelve zones East and # West of Greenwich, of one hour each, Nigeria falling into the zone with a # standard of one hour fast on Greenwich Mean Time. Nigeria standard time is @@ -1299,44 +1265,6 @@ Zone Africa/Lagos 0:13:35 - LMT 1905 Jul 1 0:13:35 - LMT 1914 Jan 1 0:30 - +0030 1919 Sep 1 1:00 - WAT -Link Africa/Lagos Africa/Bangui # Central African Republic -Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo -Link Africa/Lagos Africa/Douala # Cameroon -Link Africa/Lagos Africa/Kinshasa # Dem. Rep. of the Congo (west) -Link Africa/Lagos Africa/Libreville # Gabon -Link Africa/Lagos Africa/Luanda # Angola -Link Africa/Lagos Africa/Malabo # Equatorial Guinea -Link Africa/Lagos Africa/Niamey # Niger -Link Africa/Lagos Africa/Porto-Novo # Benin - -# Réunion -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis - 4:00 - +04 -# -# Scattered Islands (Îles Éparses) administered from Réunion are as follows. -# The following information about them is taken from -# Îles Éparses (, 1997-07-22, -# in French; no longer available as of 1999-08-17). -# We have no info about their time zone histories. -# -# Bassas da India - uninhabited -# Europa Island - inhabited from 1905 to 1910 by two families -# Glorioso Is - inhabited until at least 1958 -# Juan de Nova - uninhabited -# Tromelin - inhabited until at least 1958 - -# Rwanda -# See Africa/Maputo. - -# St Helena -# See Africa/Abidjan. -# The other parts of the St Helena territory are similar: -# Tristan da Cunha: on GMT, say Whitman and the CIA -# Ascension: on GMT, say the USNO (1995-12-21) and the CIA -# Gough (scientific station since 1955; sealers wintered previously): -# on GMT, says the CIA -# Inaccessible, Nightingale: uninhabited # São Tomé and Príncipe @@ -1356,48 +1284,19 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis # From Michael Deckers (2018-12-30): # https://www.legis-palop.org/download.jsp?idFile=102818 # ... [The legal time of the country, which coincides with universal -# coordinated time, will be restituted at 2 o'clock on day 1 of January, 2019.] +# coordinated time, will be reinstituted at 2 o'clock on day 1 of January, 2019.] Zone Africa/Sao_Tome 0:26:56 - LMT 1884 + #STDOFF -0:36:44.68 -0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT 0:00 - GMT 2018 Jan 1 01:00 1:00 - WAT 2019 Jan 1 02:00 0:00 - GMT -# Senegal -# See Africa/Abidjan. - -# Seychelles - -# From P Chan (2020-11-27): -# Standard Time was adopted on 1907-01-01. -# -# Standard Time Ordinance (Chapter 237) -# The Laws of Seychelles in Force on the 31st December, 1971, Vol. 6, p 571 -# https://books.google.com/books?id=efE-AQAAIAAJ&pg=PA571 -# -# From Tim Parenti (2020-12-05): -# A footnote on https://books.google.com/books?id=DYdDAQAAMAAJ&pg=PA1689 -# confirms that Ordinance No. 9 of 1906 "was brought into force on the 1st -# January, 1907." - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Mahe 3:41:48 - LMT 1907 Jan 1 # Victoria - 4:00 - +04 -# From Paul Eggert (2001-05-30): -# Aldabra, Farquhar, and Desroches, originally dependencies of the -# Seychelles, were transferred to the British Indian Ocean Territory -# in 1965 and returned to Seychelles control in 1976. We don't know -# whether this affected their time zone, so omit this for now. -# Possibly the islands were uninhabited. - -# Sierra Leone -# See Africa/Abidjan. - -# Somalia -# See Africa/Nairobi. - +# Eswatini (Swaziland) +# Lesotho # South Africa + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule SA 1942 1943 - Sep Sun>=15 2:00 1:00 - Rule SA 1943 1944 - Mar Sun>=15 2:00 0 - @@ -1405,8 +1304,6 @@ Rule SA 1943 1944 - Mar Sun>=15 2:00 0 - Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8 1:30 - SAST 1903 Mar 2:00 SA SAST -Link Africa/Johannesburg Africa/Maseru # Lesotho -Link Africa/Johannesburg Africa/Mbabane # Eswatini # # Marion and Prince Edward Is # scientific station since 1947 @@ -1455,12 +1352,6 @@ Zone Africa/Juba 2:06:28 - LMT 1931 3:00 - EAT 2021 Feb 1 00:00 2:00 - CAT -# Tanzania -# See Africa/Nairobi. - -# Togo -# See Africa/Abidjan. - # Tunisia # From Gwillim Law (2005-04-30): @@ -1558,10 +1449,3 @@ Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 - Zone Africa/Tunis 0:40:44 - LMT 1881 May 12 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 1:00 Tunisia CE%sT - -# Uganda -# See Africa/Nairobi. - -# Zambia -# Zimbabwe -# See Africa/Maputo. diff --git a/inst/tzdata/antarctica b/inst/tzdata/antarctica index 70a5422..fc603e9 100644 --- a/inst/tzdata/antarctica +++ b/inst/tzdata/antarctica @@ -157,9 +157,7 @@ Zone Antarctica/Mawson 0 - -00 1954 Feb 13 # St Paul Island - near Amsterdam, uninhabited # fishing stations operated variously 1819/1931 # -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français - 5:00 - +05 +# Kerguelen - see Indian/Maldives. # # year-round base in the main continent # Dumont d'Urville - see Pacific/Port_Moresby. @@ -242,31 +240,7 @@ Zone Antarctica/Troll 0 - -00 2005 Feb 12 # year-round from 1960/61 to 1992 # Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 -# From Craig Mundell (1994-12-15): -# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP -# Vostok, which is one of the Russian stations, is set on the same -# time as Moscow, Russia. -# -# From Lee Hotz (2001-03-08): -# I queried the folks at Columbia who spent the summer at Vostok and this is -# what they had to say about time there: -# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) -# time, which is 12 hours ahead of GMT. The Russian Station Vostok was -# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead -# of GMT). This is a time zone I think two hours east of Moscow. The -# natural time zone is in between the two: 8 hours ahead of GMT." -# -# From Paul Eggert (2001-05-04): -# This seems to be hopelessly confusing, so I asked Lee Hotz about it -# in person. He said that some Antarctic locations set their local -# time so that noon is the warmest part of the day, and that this -# changes during the year and does not necessarily correspond to mean -# solar noon. So the Vostok time might have been whatever the clocks -# happened to be during their visit. So we still don't really know what time -# it is at Vostok. But we'll guess +06. -# -Zone Antarctica/Vostok 0 - -00 1957 Dec 16 - 6:00 - +06 +# See Asia/Urumqi. # S Africa - year-round bases # Marion Island, -4653+03752 @@ -318,7 +292,7 @@ Zone Antarctica/Rothera 0 - -00 1976 Dec 1 # but that he found it more convenient to keep GMT+12 # as supplies for the station were coming from McMurdo Sound, # which was on GMT+12 because New Zealand was on GMT+12 all year -# at that time (1957). (Source: Siple's book 90 Degrees South.) +# at that time (1957). (Source: Siple's book 90° South.) # # From Susan Smith # http://www.cybertours.com/whs/pole10.html @@ -332,4 +306,4 @@ Zone Antarctica/Rothera 0 - -00 1976 Dec 1 # we have to go around and set them back 5 minutes or so. # Maybe if we let them run fast all of the time, we'd get to leave here sooner!! # -# See 'australasia' for Antarctica/McMurdo. +# See Pacific/Auckland. diff --git a/inst/tzdata/asia b/inst/tzdata/asia index 049b35c..a29a4dc 100644 --- a/inst/tzdata/asia +++ b/inst/tzdata/asia @@ -149,9 +149,6 @@ Zone Asia/Baku 3:19:24 - LMT 1924 May 2 4:00 EUAsia +04/+05 1997 4:00 Azer +04/+05 -# Bahrain -# See Asia/Qatar. - # Bangladesh # From Alexander Krivenyshev (2009-05-13): # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce @@ -254,13 +251,8 @@ Zone Indian/Chagos 4:49:40 - LMT 1907 5:00 - +05 1996 6:00 - +06 -# Brunei -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan - 7:30 - +0730 1933 - 8:00 - +08 - -# Burma / Myanmar +# Cocos (Keeling) Islands +# Myanmar (Burma) # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon. @@ -277,10 +269,6 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon 9:00 - +09 1945 May 3 6:30 - +0630 -# Cambodia -# See Asia/Bangkok. - - # China # From Phake Nick (2020-04-15): @@ -344,12 +332,9 @@ Rule Shang 1919 only - Sep 30 24:00 0 S # in the city at the time for people who use different time standard to adjust # their clock to their preferred time. # -# a. For the 1940 May 31 spring forward, the essay claim that it was -# coordinared between the international settlement authority and the French -# concession authority and have gathered support from Hong Kong and Xiamen, -# that it would spring forward an hour from May 31 "midnight", and the essay -# claim "Hong Kong government implemented the spring forward in the same time -# on the same date as Shanghai". +# a. For the 1940 May 31 spring forward, the essay [says] ... "Hong +# Kong government implemented the spring forward in the same time on +# the same date as Shanghai". # # b. For the 1940 fall back, it was said that they initially intended to do # so on September 30 00:59 at night, however they postponed it to October 12 @@ -545,7 +530,7 @@ Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D # Zhongyuan Time ("Central plain Time") UT +08 # Now part of Asia/Shanghai. # most of China -# Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest. +# Milne gives 8:05:43.2 for Xujiahui Observatory time.... # Guo says Shanghai switched to UT +08 "from the end of the 19th century". # # Long-shu Time (probably as Long and Shu were two names of the area) UT +07 @@ -664,18 +649,19 @@ Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D # Zone NAME STDOFF RULES FORMAT [UNTIL] # Beijing time, used throughout China; represented by Shanghai. + #STDOFF 8:05:43.2 Zone Asia/Shanghai 8:05:43 - LMT 1901 8:00 Shang C%sT 1949 May 28 8:00 PRC C%sT # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) +# Vostok base in Antarctica matches this since 1970. Zone Asia/Urumqi 5:50:20 - LMT 1928 6:00 - +06 - # Hong Kong -# Milne gives 7:36:41.7; round this. +# Milne gives 7:36:41.7. # From Lee Yiu Chung (2009-10-24): # I found there are some mistakes for the...DST rule for Hong @@ -859,7 +845,8 @@ Rule HK 1973 only - Dec 30 3:30 1:00 S Rule HK 1979 only - May 13 3:30 1:00 S Rule HK 1979 only - Oct 21 3:30 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 + #STDOFF 7:36:41.7 +Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 29 17:00u 8:00 - HKT 1941 Jun 15 3:00 8:00 1:00 HKST 1941 Oct 1 4:00 8:00 0:30 HKWT 1941 Dec 25 @@ -1174,10 +1161,6 @@ Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14 3:00 - +03 2017 Oct 29 1:00u 2:00 EUAsia EE%sT -# Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72. -# However, for various reasons many users expect to find it under Europe. -Link Asia/Nicosia Europe/Nicosia - # Georgia # From Paul Eggert (1994-11-19): # Today's _Economist_ (p 60) reports that Georgia moved its clocks forward @@ -1334,7 +1317,7 @@ Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata # # From Paul Eggert (2014-09-06): # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia -# civil time was 7:07:12.5; round to even for Jakarta. +# civil time was 7:07:12.5. # # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger: # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime @@ -1370,10 +1353,11 @@ Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata # # Zone NAME STDOFF RULES FORMAT [UNTIL] # Java, Sumatra + #STDOFF 7:07:12.5 Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, # but this must be a typo. - 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia + 7:07:12 - BMT 1923 Dec 31 16:40u # Batavia 7:20 - +0720 1932 Nov 7:30 - +0730 1942 Mar 23 9:00 - +09 1945 Sep 23 @@ -1405,6 +1389,111 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov # Iran +# From Roozbeh Pournader (2022-05-30): +# Here's an order from the Cabinet to the rest of the government to switch to +# Tehran time, which is mentioned to be already at +03:30: +# https://qavanin.ir/Law/TreeText/180138 +# Just in case that goes away, I also saved a copy at archive.org: +# https://web.archive.org/web/20220530111940/https://qavanin.ir/Law/TreeText/180138 +# Here's my translation: +# +# "Circular on Matching the Hours of Governmental and Official Circles +# in Provinces +# Approved 1314/03/22 [=1935-06-13] +# According to the ruling of the Honorable Cabinet, it is ordered that from +# now on in all internal provinces of the country, governmental and official +# circles set their time to match Tehran time (three hours and half before +# Greenwich).... +# +# I still haven't found out when Tehran itself switched to +03:30.... +# +# From Paul Eggert (2022-06-05): +# Although the above says Tehran was at +03:30 before 1935-06-13, we don't +# know when it switched to +03:30. For now, use 1935-06-13 as the switch date. +# Although most likely wrong, we have no better info. + +# From Roozbeh Pournader (2022-06-01): +# This is from Kayhan newspaper, one of the major Iranian newspapers, from +# March 20, 1978, page 2: +# +# "Pull the clocks 60 minutes forward +# As we informed before, from the fourth day of the month Farvardin of the +# new year [=1978-03-24], clocks will be pulled forward, and people's daily +# work and life program will start one hour earlier than the current program. +# On the 1st day of the month Farvardin of this year [=1977-03-21], they had +# pulled the clocks forward by one hour, but in the month of Mehr +# [=1977-09-23], the clocks were pulled back by 30 minutes. +# In this way, from the 4th day of the month Farvardin, clocks will be ahead +# of the previous years by one hour and a half. +# According to the new program, during the night of 4th of Farvardin, when +# the midnight, meaning 24 o'clock is announced, the hands of the clock must +# be pulled forward by one hour and thus consider midnight 1 o'clock in the +# forenoon." +# +# This implies that in September 1977, when the daylight savings time was +# done with, Iran didn't go back to +03:30, but immediately to +04:00. +# +# +# This is from the major Iranian newspaper Ettela'at, dated [1978-08-03]..., +# page 32. It looks like they decided to get the clocks back to +4:00 +# just in time for Ramadan that year: +# +# "Tomorrow Night, Pull the Clocks Back by One Hour +# At 1 o'clock in the forenoon of Saturday 14 Mordad [=1978-08-05], the +# clocks will be pulled one hour back and instead of 1 o'clock in the +# forenoon, Radio Iran will announce 24 o'clock. +# This decision was made in the Cabinet of Ministers meeting of 25 Tir +# [=1978-07-16], [...] +# At the beginning of the year 2537 [=March 1978: Iran was using a different +# year number for a few years then, based on the Coronation of Cyrus the +# Great], the country's official time was pulled forward by one hour and now +# the official time is one hour and a half ahead compared to last year, +# because in Farvardin of last year [=March 1977], the official time was +# pulled forward one hour and this continued until the second half of last +# year [=September 1977] until in the second half of last year the official +# time was pulled back half an hour and that half hour still remains." +# +# This matches the time of the true noon published in the newspapers, as they +# clearly go from +05:00 to +04:00 after that date (which happened during a +# long weekend in Iran). + +# From Roozbeh Pournader (2022-05-31): +# [Movahedi S. Cultural preconceptions of time: Can we use operational time +# to meddle in God's Time? Comp Stud Soc Hist. 1985;27(3):385-400] +# https://www.jstor.org/stable/178704 +# Here's the quotes from the paper: +# 1. '"Iran's official time keeper moved the clock one hour forward as from +# March 22, 1977 (Farvardin 2, 2536) to make maximum use of daylight and save +# in energy consumption. Thus Iran joined such other countries as Britain in +# observing what is known as 'daylight saving.' The proposal was originally +# put forward by the Ministry of Energy, in no way having any influence on +# observing religious ceremonies. Moving time one hour forward in summer +# means that at 11:00 o'clock on March 21, the official time was set as +# midnight March 22. Then September 24 will actually begin one hour later +# than the end of September 23 [...]." Iran's time base thus continued to be +# Greenwich Mean Time plus three and one-half hours (plus four and one-half +# hours in summer).' +# +# The article sources this from Iran Almanac and Book of Facts, 1977, Tehran: +# Echo of Iran, which is on Google Books at +# https://www.google.com/books/edition/Iran_Almanac_and_Book_of_Facts/9ybVAAAAMAAJ. +# (I confirmed it by searching for snippets.) +# +# 2. "After the fall of the shah, the revolutionary government returned to +# daylight-saving time (DST) on 26 May 1979." +# +# This seems to have been announced just one day in advance, on 25 May 1979. +# +# The change in 1977 clearly seems to be the first daylight savings effort in +# Iran. But the article doesn't mention what happened in 1978 (which was +# still during the shah's government), or how things continued in 1979 +# onwards (which was during the Islamic Republic). + +# From Francis Santoni (2022-06-01): +# for Iran and 1977 the effective change is only 20 October +# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977). +# UIT is the Operational Bulletin of International Telecommunication Union. + # From Roozbeh Pournader (2003-03-15): # This is an English translation of what I just found (originally in Persian). # The Gregorian dates in brackets are mine: @@ -1439,65 +1528,12 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov # leap year calculation involved. There has never been any serious # plan to change that law.... # -# From Paul Eggert (2018-11-30): -# Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter. -# I used the following code in GNU Emacs 26.1 to generate the "Rule Iran" -# lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's -# cal-persia implementation of Birashk's approximation, which in the -# 2008-2087 range disagrees with the astronomical Persian calendar -# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), so -# the following code special-cases those years. See Table 15.1, page 264, of: -# Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations: -# The Ultimate Edition, Cambridge University Press (2018). -# https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition -# Page 258, footnote 2, of this book says there is some dispute over what will -# happen in 2091 (and some other years after that), so this code -# stops in 2087, as 2088 and 2089 agree with the "max" rule below. -# (cl-loop -# initially (require 'cal-persia) -# with first-persian-year = 1387 -# with last-persian-year = 1466 -# ;; Exceptional years in the above range, -# ;; from Reingold & Dershowitz Table 15.1, page 264: -# with exceptional-persian-years = '(1404 1437) -# with range-start = nil -# for persian-year from first-persian-year to last-persian-year -# do -# (let* -# ((exceptional-year-offset -# (if (member persian-year exceptional-persian-years) 1 0)) -# (beg-dst-absolute -# (+ (calendar-persian-to-absolute (list 1 1 persian-year)) -# exceptional-year-offset)) -# (end-dst-absolute -# (+ (calendar-persian-to-absolute (list 6 30 persian-year)) -# exceptional-year-offset)) -# (next-year-beg-dst-absolute -# (+ (calendar-persian-to-absolute (list 1 1 (1+ persian-year))) -# (if (member (1+ persian-year) exceptional-persian-years) 1 0))) -# (beg-dst (calendar-gregorian-from-absolute beg-dst-absolute)) -# (end-dst (calendar-gregorian-from-absolute end-dst-absolute)) -# (next-year-beg-dst (calendar-gregorian-from-absolute -# next-year-beg-dst-absolute)) -# (year (calendar-extract-year beg-dst)) -# (range-end (if range-start year "only"))) -# (setq range-start (or range-start year)) -# (when (or (/= (calendar-extract-day beg-dst) -# (calendar-extract-day next-year-beg-dst)) -# (= persian-year last-persian-year)) -# (insert -# (format -# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t1:00\t-\n" -# range-start range-end -# (calendar-month-name (calendar-extract-month beg-dst) t) -# (calendar-extract-day beg-dst))) -# (insert -# (format -# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t0\t-\n" -# range-start range-end -# (calendar-month-name (calendar-extract-month end-dst) t) -# (calendar-extract-day end-dst))) -# (setq range-start nil)))) +# From Paul Eggert (2022-06-30): +# Go with Pournader for 1935 through spring 1979, and for timestamps +# after August 1991; go with with Shanks & Pottenger for other timestamps. +# Go with Santoni's citation of the UIT for fall 1977, as 20 October 1977 +# is 28 Mehr 1356, consistent with the "Mehr" in Pournader's source. +# Assume that the UIT's "1930" is UTC, i.e., 24:00 local time. # # From Oscar van Vlijmen (2005-03-30), writing about future # discrepancies between cal-persia and the Iranian calendar: @@ -1531,10 +1567,23 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov # be changed back to its previous state on the 24 hours of the # thirtieth day of Shahrivar. # +# From Ali Mirjamali (2022-05-10): +# Official IR News Agency announcement: irna.ir/xjJ3TT +# ... +# Highlights: DST will be cancelled for the next Iranian year 1402 +# (i.e 2023-March-21) and forthcoming years. +# # Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Iran 1978 1980 - Mar 20 24:00 1:00 - -Rule Iran 1978 only - Oct 20 24:00 0 - +# Work around a bug in zic 2022a and earlier. +Rule Iran 1910 only - Jan 1 00:00 0 - +# +Rule Iran 1977 only - Mar 21 23:00 1:00 - +Rule Iran 1977 only - Oct 20 24:00 0 - +Rule Iran 1978 only - Mar 24 24:00 1:00 - +Rule Iran 1978 only - Aug 5 01:00 0 - +Rule Iran 1979 only - May 26 24:00 1:00 - Rule Iran 1979 only - Sep 18 24:00 0 - +Rule Iran 1980 only - Mar 20 24:00 1:00 - Rule Iran 1980 only - Sep 22 24:00 0 - Rule Iran 1991 only - May 2 24:00 1:00 - Rule Iran 1992 1995 - Mar 21 24:00 1:00 - @@ -1565,85 +1614,13 @@ Rule Iran 2017 2019 - Mar 21 24:00 1:00 - Rule Iran 2017 2019 - Sep 21 24:00 0 - Rule Iran 2020 only - Mar 20 24:00 1:00 - Rule Iran 2020 only - Sep 20 24:00 0 - -Rule Iran 2021 2023 - Mar 21 24:00 1:00 - -Rule Iran 2021 2023 - Sep 21 24:00 0 - -Rule Iran 2024 only - Mar 20 24:00 1:00 - -Rule Iran 2024 only - Sep 20 24:00 0 - -Rule Iran 2025 2027 - Mar 21 24:00 1:00 - -Rule Iran 2025 2027 - Sep 21 24:00 0 - -Rule Iran 2028 2029 - Mar 20 24:00 1:00 - -Rule Iran 2028 2029 - Sep 20 24:00 0 - -Rule Iran 2030 2031 - Mar 21 24:00 1:00 - -Rule Iran 2030 2031 - Sep 21 24:00 0 - -Rule Iran 2032 2033 - Mar 20 24:00 1:00 - -Rule Iran 2032 2033 - Sep 20 24:00 0 - -Rule Iran 2034 2035 - Mar 21 24:00 1:00 - -Rule Iran 2034 2035 - Sep 21 24:00 0 - -Rule Iran 2036 2037 - Mar 20 24:00 1:00 - -Rule Iran 2036 2037 - Sep 20 24:00 0 - -Rule Iran 2038 2039 - Mar 21 24:00 1:00 - -Rule Iran 2038 2039 - Sep 21 24:00 0 - -Rule Iran 2040 2041 - Mar 20 24:00 1:00 - -Rule Iran 2040 2041 - Sep 20 24:00 0 - -Rule Iran 2042 2043 - Mar 21 24:00 1:00 - -Rule Iran 2042 2043 - Sep 21 24:00 0 - -Rule Iran 2044 2045 - Mar 20 24:00 1:00 - -Rule Iran 2044 2045 - Sep 20 24:00 0 - -Rule Iran 2046 2047 - Mar 21 24:00 1:00 - -Rule Iran 2046 2047 - Sep 21 24:00 0 - -Rule Iran 2048 2049 - Mar 20 24:00 1:00 - -Rule Iran 2048 2049 - Sep 20 24:00 0 - -Rule Iran 2050 2051 - Mar 21 24:00 1:00 - -Rule Iran 2050 2051 - Sep 21 24:00 0 - -Rule Iran 2052 2053 - Mar 20 24:00 1:00 - -Rule Iran 2052 2053 - Sep 20 24:00 0 - -Rule Iran 2054 2055 - Mar 21 24:00 1:00 - -Rule Iran 2054 2055 - Sep 21 24:00 0 - -Rule Iran 2056 2057 - Mar 20 24:00 1:00 - -Rule Iran 2056 2057 - Sep 20 24:00 0 - -Rule Iran 2058 2059 - Mar 21 24:00 1:00 - -Rule Iran 2058 2059 - Sep 21 24:00 0 - -Rule Iran 2060 2062 - Mar 20 24:00 1:00 - -Rule Iran 2060 2062 - Sep 20 24:00 0 - -Rule Iran 2063 only - Mar 21 24:00 1:00 - -Rule Iran 2063 only - Sep 21 24:00 0 - -Rule Iran 2064 2066 - Mar 20 24:00 1:00 - -Rule Iran 2064 2066 - Sep 20 24:00 0 - -Rule Iran 2067 only - Mar 21 24:00 1:00 - -Rule Iran 2067 only - Sep 21 24:00 0 - -Rule Iran 2068 2070 - Mar 20 24:00 1:00 - -Rule Iran 2068 2070 - Sep 20 24:00 0 - -Rule Iran 2071 only - Mar 21 24:00 1:00 - -Rule Iran 2071 only - Sep 21 24:00 0 - -Rule Iran 2072 2074 - Mar 20 24:00 1:00 - -Rule Iran 2072 2074 - Sep 20 24:00 0 - -Rule Iran 2075 only - Mar 21 24:00 1:00 - -Rule Iran 2075 only - Sep 21 24:00 0 - -Rule Iran 2076 2078 - Mar 20 24:00 1:00 - -Rule Iran 2076 2078 - Sep 20 24:00 0 - -Rule Iran 2079 only - Mar 21 24:00 1:00 - -Rule Iran 2079 only - Sep 21 24:00 0 - -Rule Iran 2080 2082 - Mar 20 24:00 1:00 - -Rule Iran 2080 2082 - Sep 20 24:00 0 - -Rule Iran 2083 only - Mar 21 24:00 1:00 - -Rule Iran 2083 only - Sep 21 24:00 0 - -Rule Iran 2084 2086 - Mar 20 24:00 1:00 - -Rule Iran 2084 2086 - Sep 20 24:00 0 - -Rule Iran 2087 only - Mar 21 24:00 1:00 - -Rule Iran 2087 only - Sep 21 24:00 0 - -# -# The following rules are approximations starting in the year 2088. -# These are the best post-2088 approximations available, given the -# restrictions of a single rule using ordinary Gregorian dates. -# At some point this table will need to be extended, though quite -# possibly Iran will change the rules first. -Rule Iran 2088 max - Mar 20 24:00 1:00 - -Rule Iran 2088 max - Sep 20 24:00 0 - +Rule Iran 2021 2022 - Mar 21 24:00 1:00 - +Rule Iran 2021 2022 - Sep 21 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 - 3:25:44 - TMT 1946 # Tehran Mean Time - 3:30 - +0330 1977 Nov + 3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time + 3:30 Iran +0330/+0430 1977 Oct 20 24:00 4:00 Iran +04/+05 1979 3:30 Iran +0330/+0430 @@ -2239,6 +2216,17 @@ Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u # From the Arabic version, it seems to say it would be at midnight # (assume 24:00) on the last Thursday in February, starting from 2022. +# From Issam Al-Zuwairi (2022-10-05): +# The Council of Ministers in Jordan decided Wednesday 5th October 2022, +# that daylight saving time (DST) will be throughout the year.... +# +# From Brian Inglis (2022-10-06): +# https://petra.gov.jo/Include/InnerPage.jsp?ID=45567&lang=en&name=en_news +# +# From Paul Eggert (2022-10-05): +# Like Syria, model this as a transition from EEST +03 (DST) to plain +03 +# (non-DST) at the point where DST would otherwise have ended. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Jordan 1973 only - Jun 6 0:00 1:00 S Rule Jordan 1973 1975 - Oct 1 0:00 0 - @@ -2270,11 +2258,12 @@ Rule Jordan 2005 only - Sep lastFri 0:00s 0 - Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 - Rule Jordan 2013 only - Dec 20 0:00 0 - Rule Jordan 2014 2021 - Mar lastThu 24:00 1:00 S -Rule Jordan 2014 max - Oct lastFri 0:00s 0 - -Rule Jordan 2022 max - Feb lastThu 24:00 1:00 S +Rule Jordan 2014 2022 - Oct lastFri 0:00s 0 - +Rule Jordan 2022 only - Feb lastThu 24:00 1:00 S # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Amman 2:23:44 - LMT 1931 - 2:00 Jordan EE%sT + 2:00 Jordan EE%sT 2022 Oct 28 0:00s + 3:00 - +03 # Kazakhstan @@ -2465,9 +2454,9 @@ Zone Asia/Amman 2:23:44 - LMT 1931 # the third time belt (before 1930 this means +03). # From Alexander Konzurovski (2018-12-20): -# Qyzyolrda Region (Asia/Qyzylorda) is changing its time zone from -# UTC+6 to UTC+5 effective December 21st, 2018. The legal document is -# located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language). +# (Asia/Qyzylorda) is changing its time zone from UTC+6 to UTC+5 +# effective December 21st, 2018.... +# http://adilet.zan.kz/rus/docs/P1800000817 (russian language). # Zone NAME STDOFF RULES FORMAT [UNTIL] # @@ -2700,16 +2689,42 @@ Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 8:30 - KST 2018 May 4 23:30 9:00 - KST -############################################################################### - -# Kuwait -# See Asia/Riyadh. - -# Laos -# See Asia/Bangkok. - # Lebanon +# +# From Saadallah Itani (2023-03-23): +# Lebanon ... announced today delay of Spring forward from March 25 to April 20. +# +# From Paul Eggert (2023-03-27): +# This announcement was by the Lebanese caretaker prime minister Najib Mikati. +# https://www.mtv.com.lb/en/News/Local/1352516/lebanon-postpones-daylight-saving-time-adoption +# A video was later leaked to the media of parliament speaker Nabih Berri +# asking Mikati to postpone DST to aid observance of Ramadan, Mikati objecting +# that this would cause problems such as scheduling airline flights, to which +# Berri interjected, "What flights?" +# +# The change was controversial and led to a partly-sectarian divide. +# Many Lebanese institutions, including the education ministry, the Maronite +# church, and two news channels LCBI and MTV, ignored the announcement and +# went ahead with the long-scheduled spring-forward on March 25/26, some +# arguing that the prime minister had not followed the law because the change +# had not been approved by the cabinet. Google went with the announcement; +# Apple ignored it. At least one bank followed the announcement for its doors, +# but ignored the announcement in internal computer systems. +# Beirut international airport listed two times for each departure. +# Dan Azzi wrote "My view is that this whole thing is a Dumb and Dumber movie." +# Eventually the prime minister backed down, said the cabinet had decided to +# stick with its 1998 decision, and that DST would begin midnight March 29/30. +# https://www.nna-leb.gov.lb/en/miscellaneous/604093/lebanon-has-two-times-of-day-amid-daylight-savings +# https://www.cnbc.com/2023/03/27/lebanon-in-two-different-time-zones-as-government-disagrees-on-daylight-savings.html +# +# Although we could model the chaos with two Zones, that would likely cause +# more trouble than it would cure. Since so many manual clocks and +# computer-based timestamps ignored the announcement, stick with official +# cabinet resolutions in the data while recording the prime minister's +# announcement as a comment. This is how we treated a similar situation in +# Rio de Janeiro in spring 1993. +# # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Lebanon 1920 only - Mar 28 0:00 1:00 S Rule Lebanon 1920 only - Oct 25 0:00 0 - @@ -2735,29 +2750,23 @@ Rule Lebanon 1992 only - Oct 4 0:00 0 - Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 - Rule Lebanon 1999 max - Oct lastSun 0:00 0 - +# This one-time rule, announced by the prime minister first for April 21 +# then for March 30, is commented out for reasons described above. +#Rule Lebanon 2023 only - Mar 30 0:00 1:00 S + # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Beirut 2:22:00 - LMT 1880 2:00 Lebanon EE%sT -# Malaysia +# Brunei +# Malaysia (eastern) +# # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 - Rule NBorneo 1935 1941 - Dec 14 0:00 0 - # -# peninsular Malaysia -# taken from Mok Ly Yng (2003-10-30) -# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html -# This agrees with Singapore since 1905-06-01. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 - 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. - 7:00 - +07 1933 Jan 1 - 7:00 0:20 +0720 1936 Jan 1 - 7:20 - +0720 1941 Sep 1 - 7:30 - +0730 1942 Feb 16 - 9:00 - +09 1945 Sep 12 - 7:30 - +0730 1982 Jan 1 - 8:00 - +08 +# For peninsular Malaysia see Asia/Singapore. +# # Sabah & Sarawak # From Paul Eggert (2014-08-12): # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 @@ -2936,9 +2945,6 @@ Zone Asia/Kathmandu 5:41:16 - LMT 1920 5:30 - +0530 1986 5:45 - +0545 -# Oman -# See Asia/Dubai. - # Pakistan # From Rives McDow (2002-03-13): @@ -2986,7 +2992,7 @@ Zone Asia/Kathmandu 5:41:16 - LMT 1920 # 9pm and moving clocks forward by one hour for the next three months. ...." # # http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html -# http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4 +# http://www.dailytimes.com.pk/default.asp?page=2008\05\15\story_15-5-2008_pg1_4 # From Arthur David Olson (2008-05-19): # XXX--midnight transitions is a guess; 2008 only is a guess. @@ -3309,7 +3315,7 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # Some of many sources in Arabic: # http://www.samanews.com/index.php?act=Show&id=122638 # -# http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html +# http://safa.ps/details/news/74352/بدء-التوقيت-الصيفي-بالضفة-وغزة-ليلة-الجمعة.html # # Our brief summary: # https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html @@ -3319,7 +3325,7 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # time from midnight on Friday, March 29, 2013" (translated). # [These are in Arabic and are for Gaza and for Ramallah, respectively.] # http://www.samanews.com/index.php?act=Show&id=154120 -# http://safa.ps/details/news/99844/%D8%B1%D8%A7%D9%85-%D8%A7%D9%84%D9%84%D9%87-%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-29-%D8%A7%D9%84%D8%AC%D8%A7%D8%B1%D9%8A.html +# http://safa.ps/details/news/99844/رام-الله-بدء-التوقيت-الصيفي-29-الجاري.html # From Steffen Thorsen (2013-09-24): # The Gaza and West Bank are ending DST Thursday at midnight @@ -3393,10 +3399,6 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # The winter time in 2015 started on October 23 at 01:00. # https://wafa.ps/ar_page.aspx?id=CgpCdYa670694628582aCgpCdY # http://www.palestinecabinet.gov.ps/portal/meeting/details/27583 -# -# From Paul Eggert (2019-04-10): -# For now, guess spring-ahead transitions are at 00:00 on the Saturday -# preceding March's last Sunday (i.e., Sat>=24). # From P Chan (2021-10-18): # http://wafa.ps/Pages/Details/34701 @@ -3413,6 +3415,50 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # From Heba Hamad (2022-03-10): # summer time will begin in Palestine from Sunday 03-27-2022, 00:00 AM. +# From Heba Hamad (2022-08-30): +# winter time will begin in Palestine from Saturday 10-29, 02:00 AM by +# 60 minutes backwards. Also the state of Palestine adopted the summer +# and winter time for the years: 2023,2024,2025,2026 ... +# https://mm.icann.org/pipermail/tz/attachments/20220830/9f024566/Time-0001.pdf +# (2022-08-31): ... the Saturday before the last Sunday in March and October +# at 2:00 AM ,for the years from 2023 to 2026. +# (2022-09-05): https://mtit.pna.ps/Site/New/1453 + +# From Heba Hamad (2023-03-22): +# ... summer time will begin in Palestine from Saturday 04-29-2023, +# 02:00 AM by 60 minutes forward. +# +# From Paul Eggert (2023-03-22): +# For now, guess that spring and fall transitions will normally +# continue to use 2022's rules, that during DST Palestine will switch +# to standard time at 02:00 the last Saturday before Ramadan and back +# to DST at 02:00 the first Saturday after Ramadan, and that +# if the normal spring-forward or fall-back transition occurs during +# Ramadan the former is delayed and the latter advanced. +# To implement this, I predicted Ramadan-oriented transition dates for +# 2023 through 2086 by running the following program under GNU Emacs 28.2, +# with the results integrated by hand into the table below. +# Predictions after 2086 are approximated without Ramadan. +# +# (let ((islamic-year 1444)) +# (require 'cal-islam) +# (while (< islamic-year 1510) +# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) +# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) +# (saturday 6)) +# (while (/= saturday (mod (setq a (1- a)) 7))) +# (while (/= saturday (mod b 7)) +# (setq b (1+ b))) +# (setq a (calendar-gregorian-from-absolute a)) +# (setq b (calendar-gregorian-from-absolute b)) +# (insert +# (format +# (concat "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t0\t-\n" +# "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t1:00\tS\n") +# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) +# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) +# (setq islamic-year (+ 1 islamic-year)))) + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule EgyptAsia 1957 only - May 10 0:00 1:00 S Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 - @@ -3443,14 +3489,94 @@ Rule Palestine 2013 only - Sep 27 0:00 0 - Rule Palestine 2014 only - Oct 24 0:00 0 - Rule Palestine 2015 only - Mar 28 0:00 1:00 S Rule Palestine 2015 only - Oct 23 1:00 0 - -Rule Palestine 2016 2018 - Mar Sat>=24 1:00 1:00 S -Rule Palestine 2016 2018 - Oct Sat>=24 1:00 0 - +Rule Palestine 2016 2018 - Mar Sat<=30 1:00 1:00 S +Rule Palestine 2016 2018 - Oct Sat<=30 1:00 0 - Rule Palestine 2019 only - Mar 29 0:00 1:00 S -Rule Palestine 2019 only - Oct Sat>=24 0:00 0 - -Rule Palestine 2020 2021 - Mar Sat>=24 0:00 1:00 S +Rule Palestine 2019 only - Oct Sat<=30 0:00 0 - +Rule Palestine 2020 2021 - Mar Sat<=30 0:00 1:00 S Rule Palestine 2020 only - Oct 24 1:00 0 - -Rule Palestine 2021 max - Oct Fri>=23 1:00 0 - -Rule Palestine 2022 max - Mar Sun>=25 0:00 1:00 S +Rule Palestine 2021 only - Oct 29 1:00 0 - +Rule Palestine 2022 only - Mar 27 0:00 1:00 S +Rule Palestine 2022 2035 - Oct Sat<=30 2:00 0 - +Rule Palestine 2023 only - Apr 29 2:00 1:00 S +Rule Palestine 2024 only - Apr 13 2:00 1:00 S +Rule Palestine 2025 only - Apr 5 2:00 1:00 S +Rule Palestine 2026 2054 - Mar Sat<=30 2:00 1:00 S +Rule Palestine 2036 only - Oct 18 2:00 0 - +Rule Palestine 2037 only - Oct 10 2:00 0 - +Rule Palestine 2038 only - Sep 25 2:00 0 - +Rule Palestine 2039 only - Sep 17 2:00 0 - +Rule Palestine 2039 only - Oct 22 2:00 1:00 S +Rule Palestine 2039 2067 - Oct Sat<=30 2:00 0 - +Rule Palestine 2040 only - Sep 1 2:00 0 - +Rule Palestine 2040 only - Oct 13 2:00 1:00 S +Rule Palestine 2041 only - Aug 24 2:00 0 - +Rule Palestine 2041 only - Sep 28 2:00 1:00 S +Rule Palestine 2042 only - Aug 16 2:00 0 - +Rule Palestine 2042 only - Sep 20 2:00 1:00 S +Rule Palestine 2043 only - Aug 1 2:00 0 - +Rule Palestine 2043 only - Sep 12 2:00 1:00 S +Rule Palestine 2044 only - Jul 23 2:00 0 - +Rule Palestine 2044 only - Aug 27 2:00 1:00 S +Rule Palestine 2045 only - Jul 15 2:00 0 - +Rule Palestine 2045 only - Aug 19 2:00 1:00 S +Rule Palestine 2046 only - Jun 30 2:00 0 - +Rule Palestine 2046 only - Aug 11 2:00 1:00 S +Rule Palestine 2047 only - Jun 22 2:00 0 - +Rule Palestine 2047 only - Jul 27 2:00 1:00 S +Rule Palestine 2048 only - Jun 6 2:00 0 - +Rule Palestine 2048 only - Jul 18 2:00 1:00 S +Rule Palestine 2049 only - May 29 2:00 0 - +Rule Palestine 2049 only - Jul 3 2:00 1:00 S +Rule Palestine 2050 only - May 21 2:00 0 - +Rule Palestine 2050 only - Jun 25 2:00 1:00 S +Rule Palestine 2051 only - May 6 2:00 0 - +Rule Palestine 2051 only - Jun 17 2:00 1:00 S +Rule Palestine 2052 only - Apr 27 2:00 0 - +Rule Palestine 2052 only - Jun 1 2:00 1:00 S +Rule Palestine 2053 only - Apr 12 2:00 0 - +Rule Palestine 2053 only - May 24 2:00 1:00 S +Rule Palestine 2054 only - Apr 4 2:00 0 - +Rule Palestine 2054 only - May 16 2:00 1:00 S +Rule Palestine 2055 only - May 1 2:00 1:00 S +Rule Palestine 2056 only - Apr 22 2:00 1:00 S +Rule Palestine 2057 only - Apr 7 2:00 1:00 S +Rule Palestine 2058 max - Mar Sat<=30 2:00 1:00 S +Rule Palestine 2068 only - Oct 20 2:00 0 - +Rule Palestine 2069 only - Oct 12 2:00 0 - +Rule Palestine 2070 only - Oct 4 2:00 0 - +Rule Palestine 2071 only - Sep 19 2:00 0 - +Rule Palestine 2072 only - Sep 10 2:00 0 - +Rule Palestine 2072 only - Oct 15 2:00 1:00 S +Rule Palestine 2073 only - Sep 2 2:00 0 - +Rule Palestine 2073 only - Oct 7 2:00 1:00 S +Rule Palestine 2074 only - Aug 18 2:00 0 - +Rule Palestine 2074 only - Sep 29 2:00 1:00 S +Rule Palestine 2075 only - Aug 10 2:00 0 - +Rule Palestine 2075 only - Sep 14 2:00 1:00 S +Rule Palestine 2075 max - Oct Sat<=30 2:00 0 - +Rule Palestine 2076 only - Jul 25 2:00 0 - +Rule Palestine 2076 only - Sep 5 2:00 1:00 S +Rule Palestine 2077 only - Jul 17 2:00 0 - +Rule Palestine 2077 only - Aug 28 2:00 1:00 S +Rule Palestine 2078 only - Jul 9 2:00 0 - +Rule Palestine 2078 only - Aug 13 2:00 1:00 S +Rule Palestine 2079 only - Jun 24 2:00 0 - +Rule Palestine 2079 only - Aug 5 2:00 1:00 S +Rule Palestine 2080 only - Jun 15 2:00 0 - +Rule Palestine 2080 only - Jul 20 2:00 1:00 S +Rule Palestine 2081 only - Jun 7 2:00 0 - +Rule Palestine 2081 only - Jul 12 2:00 1:00 S +Rule Palestine 2082 only - May 23 2:00 0 - +Rule Palestine 2082 only - Jul 4 2:00 1:00 S +Rule Palestine 2083 only - May 15 2:00 0 - +Rule Palestine 2083 only - Jun 19 2:00 1:00 S +Rule Palestine 2084 only - Apr 29 2:00 0 - +Rule Palestine 2084 only - Jun 10 2:00 1:00 S +Rule Palestine 2085 only - Apr 21 2:00 0 - +Rule Palestine 2085 only - Jun 2 2:00 1:00 S +Rule Palestine 2086 only - Apr 13 2:00 0 - +Rule Palestine 2086 only - May 18 2:00 1:00 S # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Gaza 2:17:52 - LMT 1900 Oct @@ -3539,14 +3665,18 @@ Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 9:00 - JST 1944 Nov 8:00 Phil P%sT +# Bahrain # Qatar # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha 4:00 - +04 1972 Jun 3:00 - +03 -Link Asia/Qatar Asia/Bahrain +# Kuwait # Saudi Arabia +# Yemen +# +# Japan's year-round bases in Antarctica match this since 1970. # # From Paul Eggert (2018-08-29): # Time in Saudi Arabia and other countries in the Arabian peninsula was not @@ -3591,9 +3721,6 @@ Link Asia/Qatar Asia/Bahrain # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 3:00 - +03 -Link Asia/Riyadh Antarctica/Syowa -Link Asia/Riyadh Asia/Aden # Yemen -Link Asia/Riyadh Asia/Kuwait # Singapore # taken from Mok Ly Yng (2003-10-30) @@ -3606,7 +3733,7 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 7:20 - +0720 1941 Sep 1 7:30 - +0730 1942 Feb 16 9:00 - +09 1945 Sep 12 - 7:30 - +0730 1982 Jan 1 + 7:30 - +0730 1981 Dec 31 16:00u 8:00 - +08 # Spratly Is @@ -3653,7 +3780,7 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 # standard time is SLST. # # From Paul Eggert (2016-10-18): -# "SLST" seems to be reasonably recent and rarely-used outside time +# "SLST" seems to be reasonably recent and rarely used outside time # zone nerd sources. I searched Google News and found three uses of # it in the International Business Times of India in February and # March of this year when discussing cricket match times, but nothing @@ -3822,19 +3949,27 @@ Rule Syria 2007 only - Nov Fri>=1 0:00 0 - # Our brief summary: # https://www.timeanddate.com/news/time/syria-dst-2012.html -# From Arthur David Olson (2012-03-27): -# Assume last Friday in March going forward XXX. +# From Steffen Thorsen (2022-10-05): +# Syria is adopting year-round DST, starting this autumn.... +# From https://www.enabbaladi.net/archives/607812 +# "This [the decision] came after the weekly government meeting today, +# Tuesday 4 October ..." +# +# From Paul Eggert (2022-10-05): +# Like Jordan, model this as a transition from EEST +03 (DST) to plain +03 +# (non-DST) at the point where DST would otherwise have ended. Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S Rule Syria 2008 only - Nov 1 0:00 0 - Rule Syria 2009 only - Mar lastFri 0:00 1:00 S Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S -Rule Syria 2012 max - Mar lastFri 0:00 1:00 S -Rule Syria 2009 max - Oct lastFri 0:00 0 - +Rule Syria 2012 2022 - Mar lastFri 0:00 1:00 S +Rule Syria 2009 2022 - Oct lastFri 0:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq - 2:00 Syria EE%sT + 2:00 Syria EE%sT 2022 Oct 28 0:00 + 3:00 - +03 # Tajikistan # From Shanks & Pottenger. @@ -3842,16 +3977,18 @@ Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s - 5:00 1:00 +05/+06 1991 Sep 9 2:00s + 5:00 1:00 +06 1991 Sep 9 2:00s 5:00 - +05 +# Cambodia +# Christmas I +# Laos # Thailand +# Vietnam (northern) # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Bangkok 6:42:04 - LMT 1880 6:42:04 - BMT 1920 Apr # Bangkok Mean Time 7:00 - +07 -Link Asia/Bangkok Asia/Phnom_Penh # Cambodia -Link Asia/Bangkok Asia/Vientiane # Laos # Turkmenistan # From Shanks & Pottenger. @@ -3862,11 +3999,15 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00 5:00 - +05 +# Oman +# Réunion +# Seychelles # United Arab Emirates +# +# The Crozet Is also observe Réunion time; see the 'antarctica' file. # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Dubai 3:41:12 - LMT 1920 4:00 - +04 -Link Asia/Dubai Asia/Muscat # Oman # Uzbekistan # Byalokoz 1919 says Uzbekistan was 4:27:53. @@ -3878,14 +4019,15 @@ Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2 6:00 - +06 1982 Apr 1 5:00 RussiaAsia +05/+06 1992 5:00 - +05 -# Milne says Tashkent was 4:37:10.8; round to nearest. +# Milne says Tashkent was 4:37:10.8. + #STDOFF 4:37:10.8 Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00 5:00 RussiaAsia +05/+06 1992 5:00 - +05 -# Vietnam +# Vietnam (southern) # From Paul Eggert (2014-10-04): # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being @@ -3897,7 +4039,7 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # The English-language name of Vietnam's most populous city is "Ho Chi Minh # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters. -# From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân: +# From Paul Eggert (2022-07-27) after a 2014 heads-up from Trần Ngọc Quân: # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)" # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50, # is quoted verbatim in: @@ -3909,8 +4051,8 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # The 1906 transition was effective July 1 and standardized Indochina to # Phù Liễn Observatory, legally 104° 17' 17" east of Paris. # It's unclear whether this meant legal Paris Mean Time (00:09:21) or -# the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333... -# and the latter 07:06:29.333... so either way it rounds to 07:06:30, +# the Paris Meridian; for now guess the former and round the exact +# 07:06:30.1333... to 07:06:30.13 as the legal spec used 66 2/3 ms precision. # which is used below even though the modern-day Phù Liễn Observatory # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. # @@ -3937,7 +4079,8 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # NXB Thuận Hoá, Huế, 1995. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 + #STDOFF 7:06:30.13 +Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 7:00 - +07 1942 Dec 31 23:00 8:00 - +08 1945 Mar 14 23:00 @@ -3958,7 +4101,3 @@ Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 # For timestamps in north Vietnam back to 1970 (the tzdb cutoff), # use Asia/Bangkok; see the VN entries in the file zone1970.tab. # For timestamps before 1970, see Asia/Hanoi in the file 'backzone'. - - -# Yemen -# See Asia/Riyadh. diff --git a/inst/tzdata/australasia b/inst/tzdata/australasia index 77c2c69..0633a30 100644 --- a/inst/tzdata/australasia +++ b/inst/tzdata/australasia @@ -251,19 +251,6 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov 10:00 1:00 AEDT 2011 10:00 AT AE%sT -# Christmas -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Christmas 7:02:52 - LMT 1895 Feb - 7:00 - +07 - -# Cocos (Keeling) Is -# These islands were ruled by the Ross family from about 1830 to 1978. -# We don't know when standard time was introduced; for now, we guess 1900. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Cocos 6:27:40 - LMT 1900 - 6:30 - +0630 - - # Fiji # Milne gives 11:55:44 for Suva. @@ -336,7 +323,7 @@ Zone Indian/Cocos 6:27:40 - LMT 1900 # From Steffen Thorsen (2013-01-10): # Fiji will end DST on 2014-01-19 02:00: -# http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx +# http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-(1).aspx # From Ken Rylander (2014-10-20): # DST will start Nov. 2 this year. @@ -399,8 +386,14 @@ Zone Indian/Cocos 6:27:40 - LMT 1900 # concerned shifting arrival and departure times, which may look like a simple # thing but requires some significant logistical adjustments domestically and # internationally." -# Assume for now that DST will resume with the recent pre-2020 rules for the -# 2022/2023 season. + +# From Shalvin Narayan (2022-10-27): +# Please note that there will not be any daylight savings time change +# in Fiji for 2022-2023.... +# https://www.facebook.com/FijianGovernment/posts/pfbid0mmWVTYmTibn66ybpFda75pDcf34SSpoSaskJW5gXwaKo5Sgc7273Q4fXWc6kQV6Hl +# +# From Paul Eggert (2022-10-27): +# For now, assume DST is suspended indefinitely. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 - @@ -415,8 +408,6 @@ Rule Fiji 2014 2018 - Nov Sun>=1 2:00 1:00 - Rule Fiji 2015 2021 - Jan Sun>=12 3:00 0 - Rule Fiji 2019 only - Nov Sun>=8 2:00 1:00 - Rule Fiji 2020 only - Dec 20 2:00 1:00 - -Rule Fiji 2022 max - Nov Sun>=8 2:00 1:00 - -Rule Fiji 2023 max - Jan Sun>=12 3:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva 12:00 Fiji +12/+13 @@ -432,7 +423,9 @@ Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete # Clipperton (near North America) is administered from French Polynesia; # it is uninhabited. + # Guam +# N Mariana Is # Rule NAME FROM TO - IN ON AT SAVE LETTER/S # http://guamlegislature.com/Public_Laws_5th/PL05-025.pdf @@ -472,12 +465,20 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 9:00 - +09 1944 Jul 31 10:00 Guam G%sT 2000 Dec 23 10:00 - ChST # Chamorro Standard Time -Link Pacific/Guam Pacific/Saipan # N Mariana Is -# Kiribati + +# Kiribati (Gilbert Is) +# Marshall Is +# Tuvalu +# Wake +# Wallis & Futuna # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki 12:00 - +12 + +# Kiribati (except Gilbert Is) +# See Pacific/Tarawa for the Gilbert Is. +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Kanton 0 - -00 1937 Aug 31 -12:00 - -12 1979 Oct -11:00 - -11 1994 Dec 31 @@ -487,19 +488,9 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901 -10:00 - -10 1994 Dec 31 14:00 - +14 -# N Mariana Is -# See Pacific/Guam. - # Marshall Is +# See Pacific/Tarawa for most locations. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Majuro 11:24:48 - LMT 1901 - 11:00 - +11 1914 Oct - 9:00 - +09 1919 Feb 1 - 11:00 - +11 1937 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1944 Jan 30 - 11:00 - +11 1969 Oct - 12:00 - +12 Zone Pacific/Kwajalein 11:09:20 - LMT 1901 11:00 - +11 1937 10:00 - +10 1941 Apr 1 @@ -509,22 +500,9 @@ Zone Pacific/Kwajalein 11:09:20 - LMT 1901 12:00 - +12 # Micronesia +# For Chuuk and Yap see Pacific/Port_Moresby. +# For Pohnpei see Pacific/Guadalcanal. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31 - 10:07:08 - LMT 1901 - 10:00 - +10 1914 Oct - 9:00 - +09 1919 Feb 1 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1945 Aug - 10:00 - +10 -Zone Pacific/Pohnpei -13:27:08 - LMT 1844 Dec 31 # Kolonia - 10:32:52 - LMT 1901 - 11:00 - +11 1914 Oct - 9:00 - +09 1919 Feb 1 - 11:00 - +11 1937 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1945 Aug - 11:00 - +11 Zone Pacific/Kosrae -13:08:04 - LMT 1844 Dec 31 10:51:56 - LMT 1901 11:00 - +11 1914 Oct @@ -559,6 +537,7 @@ Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa ############################################################################### # New Zealand +# McMurdo Station and Scott Base in Antarctica use Auckland time. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule NZ 1927 only - Nov 6 2:00 1:00 S @@ -594,12 +573,11 @@ Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 - Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 11:30 NZ NZ%sT 1946 Jan 1 12:00 NZ NZ%sT + Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2 12:15 - +1215 1946 Jan 1 12:45 Chatham +1245/+1345 -Link Pacific/Auckland Antarctica/McMurdo - # Auckland Is # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers, # and scientific personnel have wintered @@ -658,7 +636,7 @@ Zone Pacific/Rarotonga 13:20:56 - LMT 1899 Dec 26 # Avarua # Niue -# See Pacific/Raratonga comments for 1952 transition. +# See Pacific/Rarotonga comments for 1952 transition. # # From Tim Parenti (2021-09-13): # Consecutive contemporaneous editions of The Air Almanac listed -11:20 for @@ -693,7 +671,6 @@ Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 9:48:32 - PMMT 1895 # Port Moresby Mean Time 10:00 - +10 -Link Pacific/Port_Moresby Antarctica/DumontDUrville # # From Paul Eggert (2014-10-13): # Base the Bougainville entry on the Arawa-Kieta region, which appears to have @@ -726,10 +703,10 @@ Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown -8:00 - -08 # American Samoa +# Midway Zone Pacific/Pago_Pago 12:37:12 - LMT 1892 Jul 5 -11:22:48 - LMT 1911 -11:00 - SST # S=Samoa -Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands # Samoa (formerly and also known as Western Samoa) @@ -746,7 +723,7 @@ Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands # # Samoa's Daylight Saving Time Act 2009 is available here, but does not # contain any dates: -# http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf +# http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20(English)%20-%20Final%207-7-091.pdf # From Laupue Raymond Hughes (2010-10-07): # Please see @@ -860,11 +837,6 @@ Zone Pacific/Tongatapu 12:19:12 - LMT 1945 Sep 10 13:00 - +13 1999 13:00 Tonga +13/+14 -# Tuvalu -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Funafuti 11:56:52 - LMT 1901 - 12:00 - +12 - # US minor outlying islands @@ -915,17 +887,9 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901 # Kingman # uninhabited -# Midway -# See Pacific/Pago_Pago. - # Palmyra # uninhabited since World War II; was probably like Pacific/Kiritimati -# Wake -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Wake 11:06:28 - LMT 1901 - 12:00 - +12 - # Vanuatu @@ -962,11 +926,6 @@ Rule Vanuatu 1992 only - Oct Sat>=22 24:00 1:00 - Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila 11:00 Vanuatu +11/+12 -# Wallis and Futuna -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Wallis 12:15:20 - LMT 1901 - 12:00 - +12 - ############################################################################### # NOTES @@ -1283,6 +1242,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # to have the extra hour of sunshine removed from their area." See: # Daylight saving coming to WA in 2019. Guardian Express. 2018-04-01. # https://www.communitynews.com.au/guardian-express/news/exclusive-daylight-savings-coming-wa-summer-2018/ +# [The article ends with "Today's date is April 1."] # Queensland @@ -1826,16 +1786,12 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # "In Marshall Islands, Friday is followed by Sunday", NY Times. 1993-08-22. # https://www.nytimes.com/1993/08/22/world/in-marshall-islands-friday-is-followed-by-sunday.html -# From Phake Nick (2018-10-27): -# ... pointed out that -# currently tzdata say Pacific/Kwajalein switched from GMT+11 to GMT-12 in -# 1969 October without explanation, however an 1993 article from NYT say it -# synchorized its day with US mainland about 40 years ago and thus the switch -# should occur at around 1950s instead. -# -# From Paul Eggert (2018-11-18): -# The NYT (actually, AP) article is vague and possibly wrong about this. -# The article says the earlier switch was "40 years ago when the United States +# From Paul Eggert (2022-03-31): +# Phake Nick (2018-10-27) noted 's +# citation of a 1993 AP article published in the New York Times saying +# Kwajalein synchronized its day with the US mainland about 40 years earlier. +# However the AP article is vague and possibly wrong about this. The article +# says the earlier switch was "about 40 years ago when the United States # Army established a missile test range here". However, the Kwajalein Test # Center was established on 1960-10-01 and was run by the US Navy. It was # transferred to the US Army on 1964-07-01. See "Seize the High Ground" @@ -1852,7 +1808,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # period. It would probably be reasonable to assume Guam use GMT+9 during # that period of time like the surrounding area. -# From Paul Eggert (2018-11-18): +# From Paul Eggert (2023-01-23): # Howse writes (p 153) "The Spaniards, on the other hand, reached the # Philippines and the Ladrones from America," and implies that the Ladrones # (now called the Marianas) kept American date for quite some time. @@ -1865,7 +1821,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # they did as that avoids the need for a separate zone due to our 1970 cutoff. # # US Public Law 106-564 (2000-12-23) made UT +10 the official standard time, -# under the name "Chamorro Standard Time". There is no official abbreviation, +# under the name "Chamorro standard time". There is no official abbreviation, # but Congressman Robert A. Underwood, author of the bill that became law, # wrote in a press release (2000-12-27) that he will seek the use of "ChST". @@ -1882,13 +1838,6 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # Like the Ladrones (see Guam commentary), assume the Spanish East Indies # kept American time until the Philippines switched at the end of 1844. -# Alan Eugene Davis writes (1996-03-16), -# "I am certain, having lived there for the past decade, that 'Truk' -# (now properly known as Chuuk) ... is in the time zone GMT+10." -# -# Shanks & Pottenger write that Truk switched from UT +10 to +11 -# on 1978-10-01; ignore this for now. - # From Paul Eggert (1999-10-29): # The Federated States of Micronesia Visitors Board writes in # The Federated States of Micronesia - Visitor Information (1999-01-26) @@ -2219,7 +2168,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # through the third Sunday in January at 03:00, like Fiji, for now. # From David Wade (2017-10-18): -# In August government was disolved by the King. The current prime minister +# In August government was dissolved by the King. The current prime minister # continued in office in care taker mode. It is easy to see that few # decisions will be made until elections 16th November. # @@ -2227,26 +2176,6 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # For now, guess that DST is discontinued. That's what the IATA is guessing. -# Wake - -# From Vernice Anderson, Personal Secretary to Philip Jessup, -# US Ambassador At Large (oral history interview, 1971-02-02): -# -# Saturday, the 14th [of October, 1950] - ... The time was all the -# more confusing at that point, because we had crossed the -# International Date Line, thus getting two Sundays. Furthermore, we -# discovered that Wake Island had two hours of daylight saving time -# making calculation of time in Washington difficult if not almost -# impossible. -# -# https://www.trumanlibrary.org/oralhist/andrsonv.htm - -# From Paul Eggert (2003-03-23): -# We have no other report of DST in Wake Island, so omit this info for now. - -# See also the commentary for Micronesia. - - ############################################################################### # The International Date Line @@ -2270,24 +2199,18 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # an international standard, there are some places on the high seas where the # correct date is ambiguous. -# From Wikipedia (2005-08-31): -# Before 1920, all ships kept local apparent time on the high seas by setting -# their clocks at night or at the morning sight so that, given the ship's -# speed and direction, it would be 12 o'clock when the Sun crossed the ship's -# meridian (12 o'clock = local apparent noon). During 1917, at the -# Anglo-French Conference on Time-keeping at Sea, it was recommended that all -# ships, both military and civilian, should adopt hourly standard time zones -# on the high seas. Whenever a ship was within the territorial waters of any -# nation it would use that nation's standard time. The captain was permitted -# to change his ship's clocks at a time of his choice following his ship's -# entry into another zone time - he often chose midnight. These zones were -# adopted by all major fleets between 1920 and 1925 but not by many -# independent merchant ships until World War II. - -# From Paul Eggert, using references suggested by Oscar van Vlijmen -# (2005-03-20): -# -# The American Practical Navigator (2002) -# http://pollux.nss.nima.mil/pubs/pubs_j_apn_sections.html?rid=187 -# talks only about the 180-degree meridian with respect to ships in -# international waters; it ignores the international date line. +# From Wikipedia (2023-01-23): +# The nautical time zone system is analogous to the terrestrial time zone +# system for use on high seas. Under the system time changes are required for +# changes of longitude in one-hour steps. The one-hour step corresponds to a +# time zone width of 15° longitude. The 15° gore that is offset from GMT or +# UT1 (not UTC) by twelve hours is bisected by the nautical date line into two +# 7°30' gores that differ from GMT by ±12 hours. A nautical date line is +# implied but not explicitly drawn on time zone maps. It follows the 180th +# meridian except where it is interrupted by territorial waters adjacent to +# land, forming gaps: it is a pole-to-pole dashed line. + +# From Paul Eggert (2023-01-23): +# The American Practical Navigator , +# 2019 edition, merely says that the International Date Line +# "coincides with the 180th meridian over most of its length." diff --git a/inst/tzdata/backward b/inst/tzdata/backward index 7685c74..421f2ec 100644 --- a/inst/tzdata/backward +++ b/inst/tzdata/backward @@ -4,54 +4,33 @@ # 2009-05-17 by Arthur David Olson. # This file provides links from old or merged timezone names to current ones. -# Many names changed in late 1993. Several of these names are +# Many names changed in 1993 and in 1995, and many merged names moved here +# in the period from 2013 through 2022. Several of these names are # also present in the file 'backzone', which has data important only # for pre-1970 timestamps and so is out of scope for tzdb proper. -# Link TARGET LINK-NAME -Link Africa/Nairobi Africa/Asmera -Link Africa/Abidjan Africa/Timbuktu -Link America/Argentina/Catamarca America/Argentina/ComodRivadavia -Link America/Adak America/Atka -Link America/Argentina/Buenos_Aires America/Buenos_Aires -Link America/Argentina/Catamarca America/Catamarca -Link America/Panama America/Coral_Harbour -Link America/Argentina/Cordoba America/Cordoba -Link America/Tijuana America/Ensenada -Link America/Indiana/Indianapolis America/Fort_Wayne -Link America/Nuuk America/Godthab -Link America/Indiana/Indianapolis America/Indianapolis -Link America/Argentina/Jujuy America/Jujuy -Link America/Indiana/Knox America/Knox_IN -Link America/Kentucky/Louisville America/Louisville -Link America/Argentina/Mendoza America/Mendoza -Link America/Toronto America/Montreal -Link America/Rio_Branco America/Porto_Acre -Link America/Argentina/Cordoba America/Rosario -Link America/Tijuana America/Santa_Isabel -Link America/Denver America/Shiprock -Link America/Puerto_Rico America/Virgin -Link Pacific/Auckland Antarctica/South_Pole -Link Asia/Ashgabat Asia/Ashkhabad -Link Asia/Kolkata Asia/Calcutta -Link Asia/Shanghai Asia/Chongqing -Link Asia/Shanghai Asia/Chungking -Link Asia/Dhaka Asia/Dacca -Link Asia/Shanghai Asia/Harbin -Link Asia/Urumqi Asia/Kashgar -Link Asia/Kathmandu Asia/Katmandu -Link Asia/Macau Asia/Macao -Link Asia/Yangon Asia/Rangoon -Link Asia/Ho_Chi_Minh Asia/Saigon -Link Asia/Jerusalem Asia/Tel_Aviv -Link Asia/Thimphu Asia/Thimbu -Link Asia/Makassar Asia/Ujung_Pandang -Link Asia/Ulaanbaatar Asia/Ulan_Bator -Link Atlantic/Faroe Atlantic/Faeroe -Link Europe/Oslo Atlantic/Jan_Mayen -Link Australia/Sydney Australia/ACT -Link Australia/Sydney Australia/Canberra -Link Australia/Hobart Australia/Currie +# Although this file is optional and tzdb will work if you omit it by +# building with 'make BACKWARD=', in practice downstream users +# typically use this file for backward compatibility. + +# This file is divided into sections, one for each major reason for a +# backward compatibility link. Each section is sorted by link name. + +# A "#= TARGET1" comment labels each link inserted only because some +# .zi parsers (including tzcode through 2022e) mishandle links to links. +# The comment says what the target would be if these parsers were fixed +# so that data could contain links to links. For example, the line +# "Link Australia/Sydney Australia/ACT #= Australia/Canberra" would be +# "Link Australia/Canberra Australia/ACT" were it not that data lines +# refrain from linking to links like Australia/Canberra, which means +# the Australia/ACT line links instead to Australia/Sydney, +# Australia/Canberra's target. + + +# Pre-1993 naming conventions + +# Link TARGET LINK-NAME #= TARGET1 +Link Australia/Sydney Australia/ACT #= Australia/Canberra Link Australia/Lord_Howe Australia/LHI Link Australia/Sydney Australia/NSW Link Australia/Darwin Australia/North @@ -61,7 +40,7 @@ Link Australia/Hobart Australia/Tasmania Link Australia/Melbourne Australia/Victoria Link Australia/Perth Australia/West Link Australia/Broken_Hill Australia/Yancowinna -Link America/Rio_Branco Brazil/Acre +Link America/Rio_Branco Brazil/Acre #= America/Porto_Acre Link America/Noronha Brazil/DeNoronha Link America/Sao_Paulo Brazil/East Link America/Manaus Brazil/West @@ -81,17 +60,36 @@ Link Pacific/Easter Chile/EasterIsland Link America/Havana Cuba Link Africa/Cairo Egypt Link Europe/Dublin Eire +# Vanguard section, for most .zi parsers. +#Link GMT Etc/GMT +#Link GMT Etc/GMT+0 +#Link GMT Etc/GMT-0 +#Link GMT Etc/GMT0 +#Link GMT Etc/Greenwich +# Rearguard section, for TZUpdater 2.3.2 and earlier. +Link Etc/GMT Etc/GMT+0 +Link Etc/GMT Etc/GMT-0 +Link Etc/GMT Etc/GMT0 +Link Etc/GMT Etc/Greenwich +# End of rearguard section. Link Etc/UTC Etc/UCT -Link Europe/London Europe/Belfast -Link Europe/Chisinau Europe/Tiraspol +Link Etc/UTC Etc/Universal +Link Etc/UTC Etc/Zulu Link Europe/London GB Link Europe/London GB-Eire +# Vanguard section, for most .zi parsers. +#Link GMT GMT+0 +#Link GMT GMT-0 +#Link GMT GMT0 +#Link GMT Greenwich +# Rearguard section, for TZUpdater 2.3.2 and earlier. Link Etc/GMT GMT+0 Link Etc/GMT GMT-0 Link Etc/GMT GMT0 Link Etc/GMT Greenwich +# End of rearguard section. Link Asia/Hong_Kong Hongkong -Link Atlantic/Reykjavik Iceland +Link Africa/Abidjan Iceland #= Atlantic/Reykjavik Link Asia/Tehran Iran Link Asia/Jerusalem Israel Link America/Jamaica Jamaica @@ -103,14 +101,8 @@ Link America/Mazatlan Mexico/BajaSur Link America/Mexico_City Mexico/General Link Pacific/Auckland NZ Link Pacific/Chatham NZ-CHAT -Link America/Denver Navajo +Link America/Denver Navajo #= America/Shiprock Link Asia/Shanghai PRC -Link Pacific/Kanton Pacific/Enderbury -Link Pacific/Honolulu Pacific/Johnston -Link Pacific/Pohnpei Pacific/Ponape -Link Pacific/Pago_Pago Pacific/Samoa -Link Pacific/Chuuk Pacific/Truk -Link Pacific/Chuuk Pacific/Yap Link Europe/Warsaw Poland Link Europe/Lisbon Portugal Link Asia/Taipei ROC @@ -134,3 +126,194 @@ Link Etc/UTC UTC Link Etc/UTC Universal Link Europe/Moscow W-SU Link Etc/UTC Zulu + + +# Two-part names that were renamed mostly to three-part names in 1995 + +# Link TARGET LINK-NAME #= TARGET1 +Link America/Argentina/Buenos_Aires America/Buenos_Aires +Link America/Argentina/Catamarca America/Catamarca +Link America/Argentina/Cordoba America/Cordoba +Link America/Indiana/Indianapolis America/Indianapolis +Link America/Argentina/Jujuy America/Jujuy +Link America/Indiana/Knox America/Knox_IN +Link America/Kentucky/Louisville America/Louisville +Link America/Argentina/Mendoza America/Mendoza +Link America/Puerto_Rico America/Virgin #= America/St_Thomas +Link Pacific/Pago_Pago Pacific/Samoa + + +# Pre-2013 practice, which typically had a Zone per zone.tab line + +# Link TARGET LINK-NAME +Link Africa/Abidjan Africa/Accra +Link Africa/Nairobi Africa/Addis_Ababa +Link Africa/Nairobi Africa/Asmara +Link Africa/Abidjan Africa/Bamako +Link Africa/Lagos Africa/Bangui +Link Africa/Abidjan Africa/Banjul +Link Africa/Maputo Africa/Blantyre +Link Africa/Lagos Africa/Brazzaville +Link Africa/Maputo Africa/Bujumbura +Link Africa/Abidjan Africa/Conakry +Link Africa/Abidjan Africa/Dakar +Link Africa/Nairobi Africa/Dar_es_Salaam +Link Africa/Nairobi Africa/Djibouti +Link Africa/Lagos Africa/Douala +Link Africa/Abidjan Africa/Freetown +Link Africa/Maputo Africa/Gaborone +Link Africa/Maputo Africa/Harare +Link Africa/Nairobi Africa/Kampala +Link Africa/Maputo Africa/Kigali +Link Africa/Lagos Africa/Kinshasa +Link Africa/Lagos Africa/Libreville +Link Africa/Abidjan Africa/Lome +Link Africa/Lagos Africa/Luanda +Link Africa/Maputo Africa/Lubumbashi +Link Africa/Maputo Africa/Lusaka +Link Africa/Lagos Africa/Malabo +Link Africa/Johannesburg Africa/Maseru +Link Africa/Johannesburg Africa/Mbabane +Link Africa/Nairobi Africa/Mogadishu +Link Africa/Lagos Africa/Niamey +Link Africa/Abidjan Africa/Nouakchott +Link Africa/Abidjan Africa/Ouagadougou +Link Africa/Lagos Africa/Porto-Novo +Link America/Puerto_Rico America/Anguilla +Link America/Puerto_Rico America/Antigua +Link America/Puerto_Rico America/Aruba +Link America/Panama America/Atikokan +Link America/Puerto_Rico America/Blanc-Sablon +Link America/Panama America/Cayman +Link America/Phoenix America/Creston +Link America/Puerto_Rico America/Curacao +Link America/Puerto_Rico America/Dominica +Link America/Puerto_Rico America/Grenada +Link America/Puerto_Rico America/Guadeloupe +Link America/Puerto_Rico America/Kralendijk +Link America/Puerto_Rico America/Lower_Princes +Link America/Puerto_Rico America/Marigot +Link America/Puerto_Rico America/Montserrat +Link America/Toronto America/Nassau +Link America/Puerto_Rico America/Port_of_Spain +Link America/Puerto_Rico America/St_Barthelemy +Link America/Puerto_Rico America/St_Kitts +Link America/Puerto_Rico America/St_Lucia +Link America/Puerto_Rico America/St_Thomas +Link America/Puerto_Rico America/St_Vincent +Link America/Puerto_Rico America/Tortola +Link Pacific/Port_Moresby Antarctica/DumontDUrville +Link Pacific/Auckland Antarctica/McMurdo +Link Asia/Riyadh Antarctica/Syowa +Link Asia/Urumqi Antarctica/Vostok +Link Europe/Berlin Arctic/Longyearbyen +Link Asia/Riyadh Asia/Aden +Link Asia/Qatar Asia/Bahrain +Link Asia/Kuching Asia/Brunei +Link Asia/Singapore Asia/Kuala_Lumpur +Link Asia/Riyadh Asia/Kuwait +Link Asia/Dubai Asia/Muscat +Link Asia/Bangkok Asia/Phnom_Penh +Link Asia/Bangkok Asia/Vientiane +Link Africa/Abidjan Atlantic/Reykjavik +Link Africa/Abidjan Atlantic/St_Helena +Link Europe/Brussels Europe/Amsterdam +Link Europe/Prague Europe/Bratislava +Link Europe/Zurich Europe/Busingen +Link Europe/Berlin Europe/Copenhagen +Link Europe/London Europe/Guernsey +Link Europe/London Europe/Isle_of_Man +Link Europe/London Europe/Jersey +Link Europe/Belgrade Europe/Ljubljana +Link Europe/Brussels Europe/Luxembourg +Link Europe/Helsinki Europe/Mariehamn +Link Europe/Paris Europe/Monaco +Link Europe/Berlin Europe/Oslo +Link Europe/Belgrade Europe/Podgorica +Link Europe/Rome Europe/San_Marino +Link Europe/Belgrade Europe/Sarajevo +Link Europe/Belgrade Europe/Skopje +Link Europe/Berlin Europe/Stockholm +Link Europe/Zurich Europe/Vaduz +Link Europe/Rome Europe/Vatican +Link Europe/Belgrade Europe/Zagreb +Link Africa/Nairobi Indian/Antananarivo +Link Asia/Bangkok Indian/Christmas +Link Asia/Yangon Indian/Cocos +Link Africa/Nairobi Indian/Comoro +Link Indian/Maldives Indian/Kerguelen +Link Asia/Dubai Indian/Mahe +Link Africa/Nairobi Indian/Mayotte +Link Asia/Dubai Indian/Reunion +Link Pacific/Port_Moresby Pacific/Chuuk +Link Pacific/Tarawa Pacific/Funafuti +Link Pacific/Tarawa Pacific/Majuro +Link Pacific/Pago_Pago Pacific/Midway +Link Pacific/Guadalcanal Pacific/Pohnpei +Link Pacific/Guam Pacific/Saipan +Link Pacific/Tarawa Pacific/Wake +Link Pacific/Tarawa Pacific/Wallis + + +# Non-zone.tab locations with timestamps since 1970 that duplicate +# those of an existing location + +# Link TARGET LINK-NAME +Link Africa/Abidjan Africa/Timbuktu +Link America/Argentina/Catamarca America/Argentina/ComodRivadavia +Link America/Adak America/Atka +Link America/Panama America/Coral_Harbour +Link America/Tijuana America/Ensenada +Link America/Indiana/Indianapolis America/Fort_Wayne +Link America/Toronto America/Montreal +Link America/Toronto America/Nipigon +Link America/Iqaluit America/Pangnirtung +Link America/Rio_Branco America/Porto_Acre +Link America/Winnipeg America/Rainy_River +Link America/Argentina/Cordoba America/Rosario +Link America/Tijuana America/Santa_Isabel +Link America/Denver America/Shiprock +Link America/Toronto America/Thunder_Bay +Link America/Edmonton America/Yellowknife +Link Pacific/Auckland Antarctica/South_Pole +Link Asia/Shanghai Asia/Chongqing +Link Asia/Shanghai Asia/Harbin +Link Asia/Urumqi Asia/Kashgar +Link Asia/Jerusalem Asia/Tel_Aviv +Link Europe/Berlin Atlantic/Jan_Mayen +Link Australia/Sydney Australia/Canberra +Link Australia/Hobart Australia/Currie +Link Europe/London Europe/Belfast +Link Europe/Chisinau Europe/Tiraspol +Link Europe/Kyiv Europe/Uzhgorod +Link Europe/Kyiv Europe/Zaporozhye +Link Pacific/Kanton Pacific/Enderbury +Link Pacific/Honolulu Pacific/Johnston +Link Pacific/Port_Moresby Pacific/Yap + + +# Alternate names for the same location + +# Link TARGET LINK-NAME #= TARGET1 +Link Africa/Nairobi Africa/Asmera #= Africa/Asmara +Link America/Nuuk America/Godthab +Link Asia/Ashgabat Asia/Ashkhabad +Link Asia/Kolkata Asia/Calcutta +Link Asia/Shanghai Asia/Chungking #= Asia/Chongqing +Link Asia/Dhaka Asia/Dacca +# Istanbul is in both continents. +Link Europe/Istanbul Asia/Istanbul +Link Asia/Kathmandu Asia/Katmandu +Link Asia/Macau Asia/Macao +Link Asia/Yangon Asia/Rangoon +Link Asia/Ho_Chi_Minh Asia/Saigon +Link Asia/Thimphu Asia/Thimbu +Link Asia/Makassar Asia/Ujung_Pandang +Link Asia/Ulaanbaatar Asia/Ulan_Bator +Link Atlantic/Faroe Atlantic/Faeroe +Link Europe/Kyiv Europe/Kiev +# Classically, Cyprus is in Asia; e.g. see Herodotus, Histories, I.72. +# However, for various reasons many users expect to find it under Europe. +Link Asia/Nicosia Europe/Nicosia +Link Pacific/Guadalcanal Pacific/Ponape #= Pacific/Pohnpei +Link Pacific/Port_Moresby Pacific/Truk #= Pacific/Chuuk diff --git a/inst/tzdata/backzone b/inst/tzdata/backzone index 879a140..44d81c2 100644 --- a/inst/tzdata/backzone +++ b/inst/tzdata/backzone @@ -7,6 +7,10 @@ # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. +# When proposing changes to this file, please use 'git format-patch' +# format, either by attaching the resulting .patch file to your email, +# or by using 'git send-email'. This will help maintainers save time. + # From Paul Eggert (2014-10-31): @@ -65,6 +69,11 @@ # Zones are sorted by zone name. Each zone is preceded by the # name of the country that the zone is in, along with any other # commentary and rules associated with the entry. +# If the zone overrides links in the main data, it +# is followed by the corresponding Link lines. +# If the zone overrides main-data links only when building with +# PACKRATLIST=zone.tab, it is followed by a commented-out Link line +# that starts with "#PACKRATLIST zone.tab". # # As explained in the zic man page, the zone columns are: # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -160,7 +169,7 @@ Zone Africa/Accra -0:00:52 - LMT 1915 Nov 2 # 12-hour clock starting at our 06:00, so their "8 o'clock" is our # 02:00 or 14:00. Keep this in mind when you ask the time in Amharic. # -# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time +# Shanks & Pottenger write that Ethiopia had six narrowly spaced time # zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in # 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50 # was for Adis Dera. Quite likely the Shanks data entries are wrong @@ -181,6 +190,7 @@ Zone Africa/Bamako -0:32:00 - LMT 1912 0:00 - GMT 1934 Feb 26 -1:00 - -01 1960 Jun 20 0:00 - GMT +#PACKRATLIST zone.tab Link Africa/Bamako Africa/Timbuktu # Central African Republic Zone Africa/Bangui 1:14:20 - LMT 1912 @@ -295,7 +305,7 @@ Zone Africa/Freetown -0:53:00 - LMT 1882 -0:53:00 - FMT 1913 Jul 1 # Freetown MT -1:00 SL %s 1939 Sep 5 -1:00 - -01 1941 Dec 6 24:00 - 0:00 SL GMT/+01 + 0:00 - GMT # Botswana # From Paul Eggert (2013-02-21): @@ -489,7 +499,7 @@ Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad # ever since standard time was introduced, but the information from # McKinnon sounds more authoritative. For now, assume that Atikokan # switched to EST immediately after WWII era daylight saving time -# ended. This matches the old (less-populous) America/Coral_Harbour +# ended. This matches the old (less populous) America/Coral_Harbour # entry since our cutoff date of 1970, so we can move # America/Coral_Harbour to the 'backward' file. @@ -498,6 +508,7 @@ Zone America/Atikokan -6:06:28 - LMT 1895 -6:00 1:00 CDT 1942 Feb 9 2:00s -6:00 Canada C%sT 1945 Sep 30 2:00 -5:00 - EST +#PACKRATLIST zone.tab Link America/Atikokan America/Coral_Harbour # Quebec east of Natashquan @@ -732,6 +743,66 @@ Zone America/Nassau -5:09:30 - LMT 1912 Mar 2 -5:00 Bahamas E%sT 1976 -5:00 US E%sT +# Canada +# From Chris Walton (2022-10-15): +# I would also like to see America/Nipigon and America/Rainy_River converted +# into link entries because I have zero faith in the current Shanks based data. +# From Paul Eggert (2022-10-15): +# These are now links in the primary data. Also see America/Thunder_Bay. +Zone America/Nipigon -5:53:04 - LMT 1895 + -5:00 Canada E%sT 1940 Sep 29 + -5:00 1:00 EDT 1942 Feb 9 2:00s + -5:00 Canada E%sT + +# From Rives McDow (1999-11-08): +# On October 31, when the rest of Nunavut went to Central time, +# Pangnirtung wobbled. Here is the result of their wobble: +# +# The following businesses and organizations in Pangnirtung use Central Time: +# +# First Air, Power Corp, Nunavut Construction, Health Center, RCMP, +# Eastern Arctic National Parks, A & D Specialist +# +# The following businesses and organizations in Pangnirtung use Eastern Time: +# +# Hamlet office, All other businesses, Both schools, Airport operator +# +# This has made for an interesting situation there, which warranted the news. +# No one there that I spoke with seems concerned, or has plans to +# change the local methods of keeping time, as it evidently does not +# really interfere with any activities or make things difficult locally. +# They plan to celebrate New Year's turn-over twice, one hour apart, +# so it appears that the situation will last at least that long. +# The Nunavut Intergovernmental Affairs hopes that they will "come to +# their senses", but the locals evidently don't see any problem with +# the current state of affairs. + +# From Michaela Rodrigue, writing in the +# Nunatsiaq News (1999-11-19): +# http://www.nunatsiaqonline.ca/archives/nunavut991130/nvt91119_17.html +# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones, +# central - or Nunavut time - for government offices, and eastern time +# for municipal offices and schools.... Igloolik [was similar but then] +# made the switch to central time on Saturday, Nov. 6. + +# From Chris Walton (2022-11-06): +# The implication is that Pangnirtung and Qikiqtarjuaq have observed Eastern +# Time as far back as 1984 (and likely even further back than that). +# It is possible that these communities never actually observed Atlantic +# Time, but that would be difficult to prove. +# From Paul Eggert (2022-11-06): +# This is in 'backzone' as we have no good evidence that Pangnirtung differs +# from America/Iqaluit since 1970. A Google Books snippet view of +# volume 2, page 186 of "Pilot of Arctic Canada", published 1959 by +# the Canadian Hydrographic Service, suggests (though does not state) +# that Pangnirtung observed EST then. +# +# aka Panniqtuuq +Zone America/Pangnirtung 0 - -00 1921 # trading post est. + -5:00 NT_YK E%sT 1999 Oct 31 2:00 + -6:00 Canada C%sT 2000 Oct 29 2:00 + -5:00 Canada E%sT + # United States # # From Paul Eggert (2018-03-18): @@ -762,6 +833,17 @@ Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 Link America/Port_of_Spain America/Marigot Link America/Port_of_Spain America/St_Barthelemy +# Canada +# From Chris Walton (2022-10-15): +# I would also like to see America/Nipigon and America/Rainy_River converted +# into link entries because I have zero faith in the current Shanks based data. +# From Paul Eggert (2022-10-15): +# These are now links in the primary data. Also see America/Thunder_Bay. +Zone America/Rainy_River -6:18:16 - LMT 1895 + -6:00 Canada C%sT 1940 Sep 29 + -6:00 1:00 CDT 1942 Feb 9 2:00s + -6:00 Canada C%sT + # Argentina # This entry was intended for the following areas, but has been superseded by # more detailed zones. @@ -795,10 +877,62 @@ Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown -4:04:56 - KMT 1912 # Kingstown Mean Time -4:00 - AST +# Canada +# +# From Paul Eggert (2003-07-27): +# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and +# Port Arthur, Ontario, the principle of the Bill has been in +# operation for the past three years, and in the City of Moose Jaw, +# Saskatchewan, for one year." +# +# From David Bryan via Tory Tronrud, Director/Curator, +# Thunder Bay Museum (2003-11-12): +# There is some suggestion, however, that, by-law or not, daylight +# savings time was being practiced in Fort William and Port Arthur +# before 1909.... [I]n 1910, the line between the Eastern and Central +# Time Zones was permanently moved about two hundred miles west to +# include the Thunder Bay area.... When Canada adopted daylight +# savings time in 1916, Fort William and Port Arthur, having done so +# already, did not change their clocks.... During the Second World +# War,... [t]he cities agreed to implement DST during the summer +# months for the remainder of the war years. +# +# From Jeffery Nichols (2020-02-06): +# According to the [Shanks] atlas, those western Ontario zones are huge, +# covering most of Ontario northwest of Sault Ste Marie and Timmins. +# The zones seem to include towns bigger than the ones they're named after, +# like Dryden in America/Rainy_River and Wawa (and maybe Attawapiskat) in +# America/Nipigon. I assume it's too much trouble to change the name of the +# zone (like when you found out that America/Glace_Bay includes Sydney, Nova +# Scotia).... +# +# From Chris Walton (2022-10-15): +# The TZ database currently shows that Thunder Bay has observed daylight +# saving every year from 1970 onwards with the exception of 1973. +# Back in July I raised some doubts on this mailing list about the 1973 data. +# I now have more proof that it is wrong. +# [attached Chronicle-Journal front pages, 1973-04-28 and 1973-10-27] +# +# From Paul Eggert (2022-10-15): +# This is now a link in the primary data. The following entry is +# from Shanks & Pottenger, with corrections as noted above. +# +Zone America/Thunder_Bay -5:57:00 - LMT 1895 + -6:00 - CST 1910 + -5:00 - EST 1942 + -5:00 Canada E%sT 1970 + -5:00 Toronto E%sT 1974 + -5:00 Canada E%sT + # British Virgin Is Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town -4:00 - AST +# Yellowknife, Northwest Territories +Zone America/Yellowknife 0 - -00 1935 # Yellowknife founded? + -7:00 NT_YK M%sT 1980 + -7:00 Canada M%sT + # Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 # (2005-12-05) # @@ -829,6 +963,35 @@ Link Antarctica/McMurdo Antarctica/South_Pole Zone Antarctica/Syowa 0 - -00 1957 Jan 29 3:00 - +03 +# Vostok, Antarctica +# +# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 +# From Craig Mundell (1994-12-15): +# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP +# Vostok, which is one of the Russian stations, is set on the same +# time as Moscow, Russia. +# +# From Lee Hotz (2001-03-08): +# I queried the folks at Columbia who spent the summer at Vostok and this is +# what they had to say about time there: +# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) +# time, which is 12 hours ahead of GMT. The Russian Station Vostok was +# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead +# of GMT). This is a time zone I think two hours east of Moscow. The +# natural time zone is in between the two: 8 hours ahead of GMT." +# +# From Paul Eggert (2001-05-04): +# This seems to be hopelessly confusing, so I asked Lee Hotz about it +# in person. He said that some Antarctic locations set their local +# time so that noon is the warmest part of the day, and that this +# changes during the year and does not necessarily correspond to mean +# solar noon. So the Vostok time might have been whatever the clocks +# happened to be during their visit. So we still don't really know what time +# it is at Vostok. But we'll guess +06. +# +Zone Antarctica/Vostok 0 - -00 1957 Dec 16 + 6:00 - +06 + # Yemen # Milne says 2:59:54 was the meridian of the saluting battery at Aden, # and that Yemen was at 1:55:56, the meridian of the Hagia Sophia. @@ -867,6 +1030,11 @@ Zone Asia/Bahrain 3:22:20 - LMT 1941 Jul 20 # Manamah 4:00 - +04 1972 Jun 3:00 - +03 +# Brunei +Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan + 7:30 - +0730 1933 + 8:00 - +08 + # India # # From Paul Eggert (2014-09-06): @@ -922,6 +1090,20 @@ Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar 5:00 - +05 1980 May 8:00 PRC C%sT +# peninsular Malaysia +# taken from Mok Ly Yng (2003-10-30) +# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html +# This agrees with Singapore since 1905-06-01. +Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 + 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. + 7:00 - +07 1933 Jan 1 + 7:00 0:20 +0720 1936 Jan 1 + 7:20 - +0720 1941 Sep 1 + 7:30 - +0730 1942 Feb 16 + 9:00 - +09 1945 Sep 12 + 7:30 - +0730 1981 Dec 31 16:00u + 8:00 - +08 + # Kuwait Zone Asia/Kuwait 3:11:56 - LMT 1950 3:00 - +03 @@ -995,6 +1177,64 @@ Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1 # From Whitman: Zone Atlantic/Jan_Mayen -1:00 - -01 +# Iceland +# +# From Adam David (1993-11-06): +# The name of the timezone in Iceland for system / mail / news purposes is GMT. +# +# (1993-12-05): +# This material is paraphrased from the 1988 edition of the University of +# Iceland Almanak. +# +# From January 1st, 1908 the whole of Iceland was standardised at 1 hour +# behind GMT. Previously, local mean solar time was used in different parts +# of Iceland, the almanak had been based on Reykjavík mean solar time which +# was 1 hour and 28 minutes behind GMT. +# +# "first day of winter" referred to [below] means the first day of the 26 weeks +# of winter, according to the old icelandic calendar that dates back to the +# time the norsemen first settled Iceland. The first day of winter is always +# Saturday, but is not dependent on the Julian or Gregorian calendars. +# +# (1993-12-10): +# I have a reference from the Oxford Icelandic-English dictionary for the +# beginning of winter, which ties it to the ecclesiastical calendar (and thus +# to the julian/gregorian calendar) over the period in question. +# the winter begins on the Saturday next before St. Luke's day +# (old style), or on St. Luke's day, if a Saturday. +# St. Luke's day ought to be traceable from ecclesiastical sources. "old style" +# might be a reference to the Julian calendar as opposed to Gregorian, or it +# might mean something else (???). +# +# From Paul Eggert (2014-11-22): +# The information below is taken from the 1988 Almanak; see +# http://www.almanak.hi.is/klukkan.html +# +Rule Iceland 1917 1919 - Feb 19 23:00 1:00 - +Rule Iceland 1917 only - Oct 21 1:00 0 - +Rule Iceland 1918 1919 - Nov 16 1:00 0 - +Rule Iceland 1921 only - Mar 19 23:00 1:00 - +Rule Iceland 1921 only - Jun 23 1:00 0 - +Rule Iceland 1939 only - Apr 29 23:00 1:00 - +Rule Iceland 1939 only - Oct 29 2:00 0 - +Rule Iceland 1940 only - Feb 25 2:00 1:00 - +Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 - +Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 - +# 1943-1946 - first Sunday in March until first Sunday in winter +Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 - +Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 - +# 1947-1967 - first Sunday in April until first Sunday in winter +Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 - +# 1949 and 1967 Oct transitions delayed by 1 week +Rule Iceland 1949 only - Oct 30 1:00s 0 - +Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - +Rule Iceland 1967 only - Oct 29 1:00s 0 - + +Zone Atlantic/Reykjavik -1:28 - LMT 1908 + -1:00 Iceland -01/+00 1968 Apr 7 1:00s + 0:00 - GMT +Link Atlantic/Reykjavik Iceland + # St Helena Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown -0:22:48 - JMT 1951 # Jamestown Mean Time @@ -1006,6 +1246,82 @@ Zone Australia/Currie 9:35:28 - LMT 1895 Sep 10:00 Aus AE%sT 1968 Oct 15 10:00 AT AE%sT + +# Netherlands + +# Howse writes that the Netherlands' railways used GMT between 1892 and 1940, +# but for other purposes the Netherlands used Amsterdam mean time. + +# However, Robert H. van Gent writes (2001-04-01): +# Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00 +# Amsterdam mean time) onwards, the whole of the Netherlands (including +# the Dutch railways) was required by law to observe Amsterdam mean time +# (19 minutes 32.13 seconds ahead of GMT). This had already been the +# common practice (except for the railways) for many decades but it was +# not until 1909 when the Dutch government finally defined this by law. +# On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and +# was generally known as Dutch Time ("Nederlandse Tijd"). +# +# (2001-04-08): +# 1892-05-01 was the date when the Dutch railways were by law required to +# observe GMT while the remainder of the Netherlands adhered to the common +# practice of following Amsterdam mean time. +# +# (2001-04-09): +# In 1835 the authorities of the province of North Holland requested the +# municipal authorities of the towns and cities in the province to observe +# Amsterdam mean time but I do not know in how many cases this request was +# actually followed. +# +# From 1852 onwards the Dutch telegraph offices were by law required to +# observe Amsterdam mean time. As the time signals from the observatory of +# Leiden were also distributed by the telegraph system, I assume that most +# places linked up with the telegraph (and railway) system automatically +# adopted Amsterdam mean time. +# +# Although the early Dutch railway companies initially observed a variety +# of times, most of them had adopted Amsterdam mean time by 1858 but it +# was not until 1866 when they were all required by law to observe +# Amsterdam mean time. + +# The data entries before 1945 are taken from +# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm + +# From Paul Eggert (2021-05-09): +# I invented the abbreviations AMT for Amsterdam Mean Time and NST for +# Netherlands Summer Time, used in the Netherlands from 1835 to 1937. + +Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time +Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time +Rule Neth 1917 only - Apr 16 2:00s 1:00 NST +Rule Neth 1917 only - Sep 17 2:00s 0 AMT +Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST +Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT +Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST +Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT +Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST +Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST +Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST +# From 1926 through 1939 DST began 05-15, except that it was delayed by a week +# in years when 05-15 fell in the Pentecost weekend. +Rule Neth 1926 1931 - May 15 2:00s 1:00 NST +Rule Neth 1932 only - May 22 2:00s 1:00 NST +Rule Neth 1933 1936 - May 15 2:00s 1:00 NST +Rule Neth 1937 only - May 22 2:00s 1:00 NST +Rule Neth 1937 only - Jul 1 0:00 1:00 S +Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 - +Rule Neth 1938 1939 - May 15 2:00s 1:00 S +Rule Neth 1945 only - Apr 2 2:00s 1:00 S +Rule Neth 1945 only - Sep 16 2:00s 0 - + #STDOFF 0:19:32.13 +Zone Europe/Amsterdam 0:19:32 - LMT 1835 + 0:19:32 Neth %s 1937 Jul 1 + 0:20 Neth +0020/+0120 1940 May 16 0:00 + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Neth CE%sT 1977 + 1:00 EU CE%sT + + # Northern Ireland Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00 @@ -1017,6 +1333,60 @@ Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2 0:00 GB-Eire %s 1996 0:00 EU GMT/BST + +# Denmark + +# From Jesper Nørgaard Welen (2005-04-26): +# the law [introducing standard time] was in effect from 1894-01-01.... +# The page https://www.retsinformation.dk/eli/lta/1893/83 +# confirms this, and states that the law was put forth 1893-03-29. +# +# The EU [actually, EEC and Euratom] treaty with effect from 1973: +# https://www.retsinformation.dk/eli/lta/1972/21100 +# +# This provoked a new law from 1974 to make possible summer time changes +# in subsequent decrees with the law +# https://www.retsinformation.dk/eli/lta/1974/223 +# +# It seems however that no decree was set forward until 1980. I have +# not found any decree, but in another related law, the effecting DST +# changes are stated explicitly to be from 1980-04-06 at 02:00 to +# 1980-09-28 at 02:00. If this is true, this differs slightly from +# the EU rule in that DST runs to 02:00, not 03:00. We don't know +# when Denmark began using the EU rule correctly, but we have only +# confirmation of the 1980-time, so I presume it was correct in 1981: +# The law is about the management of the extra hour, concerning +# working hours reported and effect on obligatory-rest rules (which +# was suspended on that night): +# https://web.archive.org/web/20140104053304/https://www.retsinformation.dk/Forms/R0710.aspx?id=60267 + +# From Jesper Nørgaard Welen (2005-06-11): +# The Herning Folkeblad (1980-09-26) reported that the night between +# Saturday and Sunday the clock is set back from three to two. + +# From Paul Eggert (2005-06-11): +# Hence the "02:00" of the 1980 law refers to standard time, not +# wall-clock time, and so the EU rules were in effect in 1980. + +Rule Denmark 1916 only - May 14 23:00 1:00 S +Rule Denmark 1916 only - Sep 30 23:00 0 - +Rule Denmark 1940 only - May 15 0:00 1:00 S +Rule Denmark 1945 only - Apr 2 2:00s 1:00 S +Rule Denmark 1945 only - Aug 15 2:00s 0 - +Rule Denmark 1946 only - May 1 2:00s 1:00 S +Rule Denmark 1946 only - Sep 1 2:00s 0 - +Rule Denmark 1947 only - May 4 2:00s 1:00 S +Rule Denmark 1947 only - Aug 10 2:00s 0 - +Rule Denmark 1948 only - May 9 2:00s 1:00 S +Rule Denmark 1948 only - Aug 8 2:00s 0 - +# +Zone Europe/Copenhagen 0:50:20 - LMT 1890 + 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT + 1:00 Denmark CE%sT 1942 Nov 2 2:00s + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Denmark CE%sT 1980 + 1:00 EU CE%sT + # Guernsey # Data from Joseph S. Myers # https://mm.icann.org/pipermail/tz/2013-September/019883.html @@ -1072,6 +1442,86 @@ Zone Europe/Ljubljana 0:58:04 - LMT 1884 1:00 - CET 1982 Nov 27 1:00 EU CE%sT + +# Luxembourg + +# Whitman disagrees with most of these dates in minor ways; +# go with Shanks & Pottenger. +Rule Lux 1916 only - May 14 23:00 1:00 S +Rule Lux 1916 only - Oct 1 1:00 0 - +Rule Lux 1917 only - Apr 28 23:00 1:00 S +Rule Lux 1917 only - Sep 17 1:00 0 - +Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S +Rule Lux 1918 only - Sep Mon>=15 2:00s 0 - +Rule Lux 1919 only - Mar 1 23:00 1:00 S +Rule Lux 1919 only - Oct 5 3:00 0 - +Rule Lux 1920 only - Feb 14 23:00 1:00 S +Rule Lux 1920 only - Oct 24 2:00 0 - +Rule Lux 1921 only - Mar 14 23:00 1:00 S +Rule Lux 1921 only - Oct 26 2:00 0 - +Rule Lux 1922 only - Mar 25 23:00 1:00 S +Rule Lux 1922 only - Oct Sun>=2 1:00 0 - +Rule Lux 1923 only - Apr 21 23:00 1:00 S +Rule Lux 1923 only - Oct Sun>=2 2:00 0 - +Rule Lux 1924 only - Mar 29 23:00 1:00 S +Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 - +Rule Lux 1925 only - Apr 5 23:00 1:00 S +Rule Lux 1926 only - Apr 17 23:00 1:00 S +Rule Lux 1927 only - Apr 9 23:00 1:00 S +Rule Lux 1928 only - Apr 14 23:00 1:00 S +Rule Lux 1929 only - Apr 20 23:00 1:00 S + +Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun + 1:00 Lux CE%sT 1918 Nov 25 + 0:00 Lux WE%sT 1929 Oct 6 2:00s + 0:00 Belgium WE%sT 1940 May 14 3:00 + 1:00 C-Eur WE%sT 1944 Sep 18 3:00 + 1:00 Belgium CE%sT 1977 + 1:00 EU CE%sT + +# Monaco +# +# From Michael Deckers (2020-06-12): +# In the "Journal de Monaco" of 1892-05-24, online at +# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/b1c67c12c5af11b41ea888fb048e4fe8.pdf +# we read: ... +# [In virtue of a Sovereign Ordinance of the May 13 of the current [year], +# legal time in the Principality will be set to, from the date of June 1, +# 1892 onwards, to the meridian of Paris, as in France.] +# In the "Journal de Monaco" of 1911-03-28, online at +# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/de74ffb7db53d4f599059fe8f0ed482a.pdf +# we read an ordinance of 1911-03-16: ... +# [Legal time in the Principality will be set, from the date of promulgation +# of the present ordinance, to legal time in France.... Consequently, legal +# time will be retarded by 9 minutes and 21 seconds.] +# +Zone Europe/Monaco 0:29:32 - LMT 1892 Jun 1 + 0:09:21 - PMT 1911 Mar 29 # Paris Mean Time + 0:00 France WE%sT 1945 Sep 16 3:00 + 1:00 France CE%sT 1977 + 1:00 EU CE%sT + + +# Norway + +# http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks & +# Pottenger. +Rule Norway 1916 only - May 22 1:00 1:00 S +Rule Norway 1916 only - Sep 30 0:00 0 - +Rule Norway 1945 only - Apr 2 2:00s 1:00 S +Rule Norway 1945 only - Oct 1 2:00s 0 - +Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S +Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - +Rule Norway 1965 only - Apr 25 2:00s 1:00 S + +Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 + 1:00 Norway CE%sT 1940 Aug 10 23:00 + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Norway CE%sT 1980 + 1:00 EU CE%sT +Link Europe/Oslo Arctic/Longyearbyen +#PACKRATLIST zone.tab Link Europe/Oslo Atlantic/Jan_Mayen + # Bosnia and Herzegovina Zone Europe/Sarajevo 1:13:40 - LMT 1884 1:00 - CET 1941 Apr 18 23:00 @@ -1089,6 +1539,62 @@ Zone Europe/Skopje 1:25:44 - LMT 1884 1:00 EU CE%sT +# Sweden + +# From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger: +# +# The law "Svensk författningssamling 1878, no 14" about standard time in 1879: +# From the beginning of 1879 (that is 01-01 00:00) the time for all +# places in the country is "the mean solar time for the meridian at +# three degrees, or twelve minutes of time, to the west of the +# meridian of the Observatory of Stockholm". The law is dated 1878-05-31. +# +# The observatory at that time had the meridian 18° 03' 30" +# eastern longitude = 01:12:14 in time. Less 12 minutes gives the +# national standard time as 01:00:14 ahead of GMT.... +# +# About the beginning of CET in Sweden. The lawtext ("Svensk +# författningssamling 1899, no 44") states, that "from the beginning +# of 1900... ... the same as the mean solar time for the meridian at +# the distance of one hour of time from the meridian of the English +# observatory at Greenwich, or at 12 minutes 14 seconds to the west +# from the meridian of the Observatory of Stockholm". The law is dated +# 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time +# in Sweden is 01:00:00 ahead of GMT. +# +# 1916: The lawtext ("Svensk författningssamling 1916, no 124") states +# that "1916-05-15 is considered to begin one hour earlier". It is +# pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00.... +# Further the law says, that "1916-09-30 is considered to end one hour later". +# +# The laws regulating [DST] are available on the site of the Swedish +# Parliament beginning with 1985 - the laws regulating 1980/1984 are +# not available on the site (to my knowledge they are only available +# in Swedish): (type +# "sommartid" without the quotes in the field "Fritext" and then click +# the Sök-button). +# +# (2001-05-13): +# +# I have now found a newspaper stating that at 1916-10-01 01:00 +# summertime the church-clocks etc were set back one hour to show +# 1916-10-01 00:00 standard time. The article also reports that some +# people thought the switch to standard time would take place already +# at 1916-10-01 00:00 summer time, but they had to wait for another +# hour before the event took place. +# +# Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. + +# An extra-special abbreviation style is SET for Swedish Time (svensk +# normaltid) 1879-1899, 3° west of the Stockholm Observatory. + +Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 + 1:00:14 - SET 1900 Jan 1 # Swedish Time + 1:00 - CET 1916 May 14 23:00 + 1:00 1:00 CEST 1916 Oct 1 1:00 + 1:00 - CET 1980 + 1:00 EU CE%sT + # Moldova / Transnistria Zone Europe/Tiraspol 1:58:32 - LMT 1880 @@ -1101,7 +1607,37 @@ Zone Europe/Tiraspol 1:58:32 - LMT 1880 2:00 Russia EE%sT 1992 Jan 19 2:00 3:00 Russia MSK/MSD +# Ukraine +# +# Although Shanks & Pottenger say Transcarpathia used CET 1990/1991, +# this unreliable source contradicts contemporaneous government resolutions +# (see the commentary for Ukraine in the 'europe' file) +# so for now this dubious zone is in 'backzone'. +# "Uzhhorod" is the transliteration of the Ukrainian spelling, but +# "Uzhgorod" was a common English spelling when this dubious zone was +# added to TZDB in 1999. +Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct + 1:00 - CET 1940 + 1:00 C-Eur CE%sT 1944 Oct + 1:00 1:00 CEST 1944 Oct 26 + 1:00 - CET 1945 Jun 29 + 3:00 Russia MSK/MSD 1990 + 3:00 - MSK 1990 Jul 1 2:00 + 1:00 - CET 1991 Mar 31 3:00 + 2:00 - EET 1992 Mar 20 + 2:00 C-Eur EE%sT 1996 May 13 + 2:00 EU EE%sT + # Liechtenstein + +# From Paul Eggert (2022-07-21): +# Shanks & Pottenger say Vaduz is like Zurich starting June 1894. + +# From Alois Treindl (2019-07-04): +# I was able to access the online archive of the Vaduz paper Vaterland ... +# I could confirm from the paper that Liechtenstein did in fact follow +# the same DST in 1941 and 1942 as Switzerland did. + Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun 1:00 Swiss CE%sT 1981 1:00 EU CE%sT @@ -1114,35 +1650,141 @@ Zone Europe/Zagreb 1:03:52 - LMT 1884 1:00 - CET 1982 Nov 27 1:00 EU CE%sT +# Ukraine + +# Although Shanks & Pottenger say Zaporizhzhia and eastern Lugansk +# observed DST 1990/1991, this unreliable source contradicts contemporaneous +# government resolutions (see the commentary for Ukraine in the 'europe' file) +# so for now this dubious zone is in 'backzone'. +# "Zaporizhzhia" is the transliteration of the Ukrainian name, but +# "Zaporozhye" was a common English spelling when this dubious zone was +# added to TZDB in 1999. +Zone Europe/Zaporozhye 2:20:40 - LMT 1880 + 2:20 - +0220 1924 May 2 + 2:00 - EET 1930 Jun 21 + 3:00 - MSK 1941 Aug 25 + 1:00 C-Eur CE%sT 1943 Oct 25 + 3:00 Russia MSK/MSD 1991 Mar 31 2:00 + 2:00 E-Eur EE%sT 1992 Mar 20 + 2:00 C-Eur EE%sT 1996 May 13 + 2:00 EU EE%sT + # Madagascar Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul 3:00 - EAT 1954 Feb 27 23:00s 3:00 1:00 EAST 1954 May 29 23:00s 3:00 - EAT +# Christmas +Zone Indian/Christmas 7:02:52 - LMT 1895 Feb + 7:00 - +07 + +# Cocos (Keeling) Is +# These islands were ruled by the Ross family from about 1830 to 1978. +# We don't know when standard time was introduced; for now, we guess 1900. +Zone Indian/Cocos 6:27:40 - LMT 1900 + 6:30 - +0630 + # Comoros Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro 3:00 - EAT +# Kerguelen +Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français + 5:00 - +05 + +# Seychelles +# +# From P Chan (2020-11-27): +# Standard Time was adopted on 1907-01-01. +# +# Standard Time Ordinance (Chapter 237) +# The Laws of Seychelles in Force on the 31st December, 1971, Vol. 6, p 571 +# https://books.google.com/books?id=efE-AQAAIAAJ&pg=PA571 +# +# From Tim Parenti (2020-12-05): +# A footnote on https://books.google.com/books?id=DYdDAQAAMAAJ&pg=PA1689 +# confirms that Ordinance No. 9 of 1906 "was brought into force on the 1st +# January, 1907." + +Zone Indian/Mahe 3:41:48 - LMT 1907 Jan 1 # Victoria + 4:00 - +04 +# From Paul Eggert (2001-05-30): +# Aldabra, Farquhar, and Desroches, originally dependencies of the +# Seychelles, were transferred to the British Indian Ocean Territory +# in 1965 and returned to Seychelles control in 1976. We don't know +# whether this affected their time zone, so omit this for now. +# Possibly the islands were uninhabited. + + # Mayotte Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou 3:00 - EAT +# Réunion +Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis + 4:00 - +04 +# +# Scattered Islands (Îles Éparses) administered from Réunion are as follows. +# The following information about them is taken from +# Îles Éparses (, 1997-07-22, +# in French; no longer available as of 1999-08-17). +# We have no info about their time zone histories. +# +# Bassas da India - uninhabited +# Europa Island - inhabited from 1905 to 1910 by two families +# Glorioso Is - inhabited until at least 1958 +# Juan de Nova - uninhabited +# Tromelin - inhabited until at least 1958 + +# Micronesia +# Also see Pacific/Pohnpei and commentary for Micronesia in 'australasia'. +# +# From Paul Eggert (2018-11-18): +# Alan Eugene Davis writes (1996-03-16), +# "I am certain, having lived there for the past decade, that 'Truk' +# (now properly known as Chuuk) ... is in the time zone GMT+10." +# Shanks & Pottenger write that Truk switched from UT +10 to +11 +# on 1978-10-01; ignore this for now. +Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31 + 10:07:08 - LMT 1901 + 10:00 - +10 1914 Oct + 9:00 - +09 1919 Feb 1 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1945 Aug + 10:00 - +10 +Link Pacific/Chuuk Pacific/Truk +Link Pacific/Chuuk Pacific/Yap + # Phoenix Islands, Kiribati # From Paul Eggert (2021-05-27): # Enderbury was inhabited 1860/1880s to mine guano, and 1938-03-06/1942-02-09 # for aviation (ostensibly commercial, but military uses foreseen). # The 19th-century dates are approximate. See Pacific/Kanton for -# the currently-inhabited representative for this timezone. +# the currently inhabited representative for this timezone. Zone Pacific/Enderbury 0 - -00 1860 -11:24:20 - LMT 1885 0 - -00 1938 Mar 6 -12:00 - -12 1942 Feb 9 0 - -00 +# Tuvalu +Zone Pacific/Funafuti 11:56:52 - LMT 1901 + 12:00 - +12 + # Johnston Zone Pacific/Johnston -10:00 - HST +# Marshall Is +Zone Pacific/Majuro 11:24:48 - LMT 1901 + 11:00 - +11 1914 Oct + 9:00 - +09 1919 Feb 1 + 11:00 - +11 1937 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1944 Jan 30 + 11:00 - +11 1969 Oct + 12:00 - +12 + # Midway # # From Mark Brader (2005-01-23): @@ -1158,15 +1800,64 @@ Zone Pacific/Johnston -10:00 - HST Zone Pacific/Midway -11:49:28 - LMT 1901 -11:00 - -11 1956 Jun 3 -11:00 1:00 -10 1956 Sep 2 - -11:00 - -11 + -11:00 - SST # S=Samoa + +# Micronesia +# Also see Pacific/Chuuk and commentary for Micronesia in 'australasia'. +Zone Pacific/Pohnpei -13:27:08 - LMT 1844 Dec 31 # Kolonia + 10:32:52 - LMT 1901 + 11:00 - +11 1914 Oct + 9:00 - +09 1919 Feb 1 + 11:00 - +11 1937 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1945 Aug + 11:00 - +11 +Link Pacific/Pohnpei Pacific/Ponape # N Mariana Is +# +# From Paul Eggert (2022-08-16): +# Although Shanks & Pottenger say Saipan used +09 and then switched +# to Guam time in October 1969, this is surely wrong. +# Saipan used Guam time in the late 1950s; see page 4 of the minutes on the +# conference of the 12th Saipan Legislature and the Select Committee on +# Saipan Mission, 5th Guam Legislature (1959-09-11): +# http://www.nmhcouncil.org/nmhc_archives/U.S.%20Navy%20Civil%20Affairs%20Files%201944-1962/1959/1959%2009%2017%20letter,%20minutes%20of%20conference,%20Borja.pdf +# For now, assume Saipan switched to Guam time after the Battle of Saipan. +# Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31 9:43:00 - LMT 1901 - 9:00 - +09 1969 Oct - 10:00 - +10 2000 Dec 23 + 9:00 - +09 1944 Jul 9 + 10:00 Guam G%sT 2000 Dec 23 10:00 - ChST # Chamorro Standard Time + +# Wake + +# From Vernice Anderson, Personal Secretary to Philip Jessup, +# US Ambassador At Large (oral history interview, 1971-02-02): +# +# Saturday, the 14th [of October, 1950] - ... The time was all the +# more confusing at that point, because we had crossed the +# International Date Line, thus getting two Sundays. Furthermore, we +# discovered that Wake Island had two hours of daylight saving time +# making calculation of time in Washington difficult if not almost +# impossible. +# +# https://www.trumanlibrary.org/oralhist/andrsonv.htm + +# From Paul Eggert (2003-03-23): +# We have no other report of DST in Wake Island, so omit this info for now. + +# Also see commentary for Micronesia in 'australasia'. +Zone Pacific/Wake 11:06:28 - LMT 1901 + 12:00 - +12 + + +# Wallis and Futuna +Zone Pacific/Wallis 12:15:20 - LMT 1901 + 12:00 - +12 + # Local Variables: # coding: utf-8 # End: diff --git a/inst/tzdata/calendars b/inst/tzdata/calendars index 8bc7062..f4ed9e4 100644 --- a/inst/tzdata/calendars +++ b/inst/tzdata/calendars @@ -71,7 +71,7 @@ kalenderväsen" by Lars-Olof Lodén (1968). Grotefend's data -From: "Michael Palmer" [with one obvious typo fixed] +From: "Michael Palmer" [with two obvious typos fixed] Subject: Re: Gregorian Calendar (was Re: Another FHC related question Newsgroups: soc.genealogy.german Date: Tue, 9 Feb 1999 02:32:48 -800 @@ -142,7 +142,7 @@ Gregorian calendar: 31 Dec 1700/ 12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva, - Turgau, and Schaffhausen + Thurgau, and Schaffhausen 1724 - Glarus, Appenzell, and the city of St. Gallen diff --git a/inst/tzdata/checklinks.awk b/inst/tzdata/checklinks.awk index f309010..82a5fea 100644 --- a/inst/tzdata/checklinks.awk +++ b/inst/tzdata/checklinks.awk @@ -32,6 +32,13 @@ BEGIN { } status = 1 } + if (backcheck && FILENAME != backcheck && $3 != "GMT") { + printf "%s: Link should be in '%s'\n", $3, backcheck + status = 1 + } + if ($4 == "#=") { + shortcut[$5] = $3 + } used[$2] = 1 defined[$3] = $2 } @@ -39,10 +46,25 @@ BEGIN { END { for (tz in used) { if (defined[tz] != Zone) { - printf "%s: Link to non-zone\n", tz + if (!defined[tz]) { + printf "%s: Link to nowhere\n", tz + status = 1 + } else if (DATAFORM != "vanguard") { + printf "%s: Link to link\n", tz status = 1 + } } } + for (tz in shortcut) { + if (defined[shortcut[tz]] != defined[tz]) { + target = (!defined[tz] ? "absence" \ + : defined[tz] == "\n" ? "zone" \ + : defined[tz]) + printf "%s: target %s disagrees with %s's target %s\n", \ + tz, target, shortcut[tz], defined[shortcut[tz]] + status = 1 + } + } exit status } diff --git a/inst/tzdata/checktab.awk b/inst/tzdata/checktab.awk index 23e0a3a..2dbf485 100644 --- a/inst/tzdata/checktab.awk +++ b/inst/tzdata/checktab.awk @@ -107,6 +107,7 @@ BEGIN { cc = cca[j] if (used_max < cc_used[cc]) { used_max = cc_used[cc] + used_max_cc = cc } } if (used_max <= 1 && comments) { @@ -114,9 +115,9 @@ BEGIN { zone_table, i, comments \ >>"/dev/stderr" status = 1 - } else if (1 < cc_used[cc] && !comments) { + } else if (1 < used_max && !comments) { printf "%s:%d: missing comment for %s\n", \ - zone_table, i, cc \ + zone_table, i, used_max_cc \ >>"/dev/stderr" status = 1 } diff --git a/inst/tzdata/etcetera b/inst/tzdata/etcetera index 1dc7411..865a220 100644 --- a/inst/tzdata/etcetera +++ b/inst/tzdata/etcetera @@ -16,22 +16,23 @@ # Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours # behind GMT but uses the completely misleading abbreviation "GMT". -Zone Etc/GMT 0 - GMT +# The following zone is used by tzcode functions like gmtime, +# which load the "UTC" file to handle seconds properly. Zone Etc/UTC 0 - UTC +# Functions like gmtime load the "GMT" file to handle leap seconds properly. +# Vanguard section, which works with most .zi parsers. +#Zone GMT 0 - GMT +# Rearguard section, for TZUpdater 2.3.2 and earlier. +Zone Etc/GMT 0 - GMT + # The following link uses older naming conventions, # but it belongs here, not in the file 'backward', -# as functions like gmtime load the "GMT" file to handle leap seconds properly. -# We want this to work even on installations that omit the other older names. +# as it is needed for tzcode releases through 2022a, +# where functions like gmtime load "GMT" instead of the "Etc/UTC". +# We want this to work even on installations that omit 'backward'. Link Etc/GMT GMT - -Link Etc/UTC Etc/Universal -Link Etc/UTC Etc/Zulu - -Link Etc/GMT Etc/Greenwich -Link Etc/GMT Etc/GMT-0 -Link Etc/GMT Etc/GMT+0 -Link Etc/GMT Etc/GMT0 +# End of rearguard section. # Be consistent with POSIX TZ settings in the Zone names, # even though this is the opposite of what many people expect. diff --git a/inst/tzdata/europe b/inst/tzdata/europe index 208585d..3907c05 100644 --- a/inst/tzdata/europe +++ b/inst/tzdata/europe @@ -303,8 +303,7 @@ # UT-00:25:22 and cites the International Telegraph Bureau. As it is # not clear that there was any practical significance to the change # from UT-00:25:22 to UT-00:25:21.1 in civil timekeeping, omit this -# transition for now and just use the latter value, omitting its -# fraction since our format cannot represent fractions. +# transition for now and just use the latter value. # "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time # was among various actions undertaken by the 'English' government that @@ -500,14 +499,11 @@ Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT # Use Europe/London for Jersey, Guernsey, and the Isle of Man. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s +Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00 GB-Eire %s 1968 Oct 27 1:00 - BST 1971 Oct 31 2:00u 0:00 GB-Eire %s 1996 0:00 EU GMT/BST -Link Europe/London Europe/Jersey -Link Europe/London Europe/Guernsey -Link Europe/London Europe/Isle_of_Man # From Paul Eggert (2018-02-15): # In January 2018 we discovered that the negative SAVE values in the @@ -521,9 +517,7 @@ Link Europe/London Europe/Isle_of_Man # other form with a traditional approximation for Irish timestamps # after 1971-10-31 02:00 UTC; although this approximation has tm_isdst # flags that are reversed, its UTC offsets are correct and this often -# suffices. This source file currently uses only nonnegative SAVE -# values, but this is intended to change and downstream code should -# not rely on it. +# suffices.... # # The following is like GB-Eire and EU, except with standard time in # summer and negative daylight saving time in winter. It is for when @@ -538,7 +532,8 @@ Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 - Rule Eire 1996 max - Oct lastSun 1:00u -1:00 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 + #STDOFF -0:25:21.1 +Zone Europe/Dublin -0:25:21 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00s -0:25:21 1:00 IST 1916 Oct 1 2:00s 0:00 GB-Eire %s 1921 Dec 6 # independence @@ -879,6 +874,8 @@ Zone Europe/Minsk 1:50:16 - LMT 1880 3:00 - +03 # Belgium +# Luxembourg +# Netherlands # # From Michael Deckers (2019-08-25): # The exposition in the web page @@ -962,9 +959,6 @@ Zone Europe/Brussels 0:17:30 - LMT 1880 1:00 Belgium CE%sT 1977 1:00 EU CE%sT -# Bosnia and Herzegovina -# See Europe/Belgrade. - # Bulgaria # # From Plamen Simenov via Steffen Thorsen (1999-09-09): @@ -990,13 +984,11 @@ Zone Europe/Sofia 1:33:16 - LMT 1880 2:00 E-Eur EE%sT 1997 2:00 EU EE%sT -# Croatia -# See Europe/Belgrade. - # Cyprus # Please see the 'asia' file for Asia/Nicosia. -# Czech Republic / Czechia +# Czech Republic (Czechia) +# Slovakia # # From Paul Eggert (2018-04-15): # The source for Czech data is: Kdy začíná a končí letní čas. 2018-04-15. @@ -1023,65 +1015,14 @@ Zone Europe/Prague 0:57:44 - LMT 1850 # End of rearguard section. 1:00 Czech CE%sT 1979 1:00 EU CE%sT -# Use Europe/Prague also for Slovakia. - -# Denmark, Faroe Islands, and Greenland - -# From Jesper Nørgaard Welen (2005-04-26): -# the law [introducing standard time] was in effect from 1894-01-01.... -# The page https://www.retsinformation.dk/eli/lta/1893/83 -# confirms this, and states that the law was put forth 1893-03-29. -# -# The EU [actually, EEC and Euratom] treaty with effect from 1973: -# https://www.retsinformation.dk/eli/lta/1972/21100 -# -# This provoked a new law from 1974 to make possible summer time changes -# in subsequent decrees with the law -# https://www.retsinformation.dk/eli/lta/1974/223 -# -# It seems however that no decree was set forward until 1980. I have -# not found any decree, but in another related law, the effecting DST -# changes are stated explicitly to be from 1980-04-06 at 02:00 to -# 1980-09-28 at 02:00. If this is true, this differs slightly from -# the EU rule in that DST runs to 02:00, not 03:00. We don't know -# when Denmark began using the EU rule correctly, but we have only -# confirmation of the 1980-time, so I presume it was correct in 1981: -# The law is about the management of the extra hour, concerning -# working hours reported and effect on obligatory-rest rules (which -# was suspended on that night): -# https://web.archive.org/web/20140104053304/https://www.retsinformation.dk/Forms/R0710.aspx?id=60267 - -# From Jesper Nørgaard Welen (2005-06-11): -# The Herning Folkeblad (1980-09-26) reported that the night between -# Saturday and Sunday the clock is set back from three to two. - -# From Paul Eggert (2005-06-11): -# Hence the "02:00" of the 1980 law refers to standard time, not -# wall-clock time, and so the EU rules were in effect in 1980. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Denmark 1916 only - May 14 23:00 1:00 S -Rule Denmark 1916 only - Sep 30 23:00 0 - -Rule Denmark 1940 only - May 15 0:00 1:00 S -Rule Denmark 1945 only - Apr 2 2:00s 1:00 S -Rule Denmark 1945 only - Aug 15 2:00s 0 - -Rule Denmark 1946 only - May 1 2:00s 1:00 S -Rule Denmark 1946 only - Sep 1 2:00s 0 - -Rule Denmark 1947 only - May 4 2:00s 1:00 S -Rule Denmark 1947 only - Aug 10 2:00s 0 - -Rule Denmark 1948 only - May 9 2:00s 1:00 S -Rule Denmark 1948 only - Aug 8 2:00s 0 - -# +# Faroe Is # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Copenhagen 0:50:20 - LMT 1890 - 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT - 1:00 Denmark CE%sT 1942 Nov 2 2:00s - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Denmark CE%sT 1980 - 1:00 EU CE%sT Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn 0:00 - WET 1981 0:00 EU WE%sT + +# Greenland # # From Paul Eggert (2004-10-31): # During World War II, Germany maintained secret manned weather stations in @@ -1160,7 +1101,29 @@ Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn # "National Park" by Executive Order: # http://naalakkersuisut.gl/~/media/Nanoq/Files/Attached%20Files/Engelske-tekster/Legislation/Executive%20Order%20National%20Park.rtf # It is their only National Park. -# + +# From Jonas Nyrup (2022-11-24): +# On last Saturday in October 2023 when DST ends America/Nuuk will switch +# from -03/-02 to -02/-01 +# https://sermitsiaq.ag/forslagtidsforskel-danmark-mindskes-sommertid-beholdes +# ... +# https://sermitsiaq.ag/groenland-skifte-tidszone-trods-bekymringer +# +# From Jürgen Appel (2022-11-25): +# https://ina.gl/samlinger/oversigt-over-samlinger/samling/dagsordener/dagsorden.aspx?lang=da&day=24-11-2022 +# +# From Thomas M. Steenholdt (2022-12-02): +# - The bill to move America/Nuuk from UTC-03 to UTC-02 passed. +# - The bill to stop observing DST did not (Greenland will stop observing DST +# when EU does). +# Details on the implementation are here (section 6): +# https://ina.gl/dvd/EM%202022/pdf/media/2553529/pkt17_em2022_tidens_bestemmelse_bem_da.pdf +# This is how the change will be implemented: +# 1. The shift *to* DST in 2023 happens as normal. +# 2. The shift *from* DST in 2023 happens as normal, but coincides with the +# shift to UTC-02 normaltime (people will not change their clocks here). +# 3. After this, DST is still observed, but as -02/-01 instead of -03/-02. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D Rule Thule 1991 1992 - Sep lastSun 2:00 0 S @@ -1183,7 +1146,8 @@ Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit -1:00 EU -01/+00 Zone America/Nuuk -3:26:56 - LMT 1916 Jul 28 # Godthåb -3:00 - -03 1980 Apr 6 2:00 - -3:00 EU -03/-02 + -3:00 EU -03/-02 2023 Oct 29 1:00u + -2:00 EU -02/-01 Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik -4:00 Thule A%sT @@ -1298,20 +1262,17 @@ Rule Finland 1942 only - Oct 4 1:00 0 - Rule Finland 1981 1982 - Mar lastSun 2:00 1:00 S Rule Finland 1981 1982 - Sep lastSun 3:00 0 - -# Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document); -# round to nearest. +# Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document). # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF 1:39:49.2 Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31 1:39:49 - HMT 1921 May # Helsinki Mean Time 2:00 Finland EE%sT 1983 2:00 EU EE%sT -# Åland Is -Link Europe/Helsinki Europe/Mariehamn - - # France +# Monaco # From Ciro Discepolo (2000-12-20): # @@ -1449,7 +1410,10 @@ Zone Europe/Paris 0:09:21 - LMT 1891 Mar 16 1:00 France CE%sT 1977 1:00 EU CE%sT +# Denmark # Germany +# Norway +# Sweden # From Markus Kuhn (1998-09-29): # The German time zone web site by the Physikalisch-Technische @@ -1467,14 +1431,61 @@ Zone Europe/Paris 0:09:21 - LMT 1891 Mar 16 # However, Moscow did not observe daylight saving in 1945, so # this was equivalent to UT +03, not +04. +# Svalbard & Jan Mayen + +# From Steffen Thorsen (2001-05-01): +# Although I could not find it explicitly, it seems that Jan Mayen and +# Svalbard have been using the same time as Norway at least since the +# time they were declared as parts of Norway. Svalbard was declared +# as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan +# Mayen by law of 1930-02-27 no 2, section 2. (From +# and +# ). The law/regulation +# for normal/standard time in Norway is from 1894-06-29 no 1 (came +# into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a +# part of this law since 1925/1930. (From +# ) I have not been +# able to find if Jan Mayen used a different time zone (e.g. -0100) +# before 1930. Jan Mayen has only been "inhabited" since 1921 by +# Norwegian meteorologists and maybe used the same time as Norway ever +# since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since +# before 1895, and therefore probably changed the local time somewhere +# between 1895 and 1925 (inclusive). + +# From Paul Eggert (2013-09-04): +# +# Actually, Jan Mayen was never occupied by Germany during World War II, +# so it must have diverged from Oslo time during the war, as Oslo was +# keeping Berlin time. +# +# says that the meteorologists +# burned down their station in 1940 and left the island, but returned in +# 1941 with a small Norwegian garrison and continued operations despite +# frequent air attacks from Germans. In 1943 the Americans established a +# radiolocating station on the island, called "Atlantic City". Possibly +# the UT offset changed during the war, but I think it unlikely that +# Jan Mayen used German daylight-saving rules. +# +# Svalbard is more complicated, as it was raided in August 1941 by an +# Allied party that evacuated the civilian population to England (says +# ). The Svalbard FAQ +# says that the Germans were +# expelled on 1942-05-14. However, small parties of Germans did return, +# and according to Wilhelm Dege's book "War North of 80" (1954) +# http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html +# the German armed forces at the Svalbard weather station code-named +# Haudegen did not surrender to the Allies until September 1945. +# +# All these events predate our cutoff date of 1970, so use Europe/Berlin +# for these regions. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Germany 1946 only - Apr 14 2:00s 1:00 S Rule Germany 1946 only - Oct 7 2:00s 0 - Rule Germany 1947 1949 - Oct Sun>=1 2:00s 0 - -# http://www.ptb.de/de/org/4/44/441/salt.htm says the following transition -# occurred at 3:00 MEZ, not the 2:00 MEZ given in Shanks & Pottenger. -# Go with the PTB. +# https://www.ptb.de/cms/en/ptb/fachabteilungen/abt4/fb-44/ag-441/realisation-of-legal-time-in-germany/dst-and-midsummer-dst-in-germany-until-1979.html +# says the following transition occurred at 3:00 MEZ, not the 2:00 MEZ +# given in Shanks & Pottenger. Go with the PTB. Rule Germany 1947 only - Apr 6 3:00s 1:00 S Rule Germany 1947 only - May 11 2:00s 2:00 M Rule Germany 1947 only - Jun 29 3:00 1:00 S @@ -1492,21 +1503,6 @@ Zone Europe/Berlin 0:53:28 - LMT 1893 Apr 1:00 Germany CE%sT 1980 1:00 EU CE%sT -# From Tobias Conradi (2011-09-12): -# Büsingen , surrounded by the Swiss canton -# Schaffhausen, did not start observing DST in 1980 as the rest of DE -# (West Germany at that time) and DD (East Germany at that time) did. -# DD merged into DE, the area is currently covered by code DE in ISO 3166-1, -# which in turn is covered by the zone Europe/Berlin. -# -# Source for the time in Büsingen 1980: -# http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3 - -# From Arthur David Olson (2012-03-03): -# Büsingen and Zurich have shared clocks since 1970. - -Link Europe/Zurich Europe/Busingen - # Georgia # Please see the "asia" file for Asia/Tbilisi. # Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni) @@ -1514,7 +1510,7 @@ Link Europe/Zurich Europe/Busingen # Gibraltar # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s +Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00 GB-Eire %s 1957 Apr 14 2:00 1:00 - CET 1982 1:00 EU CE%sT @@ -1624,65 +1620,9 @@ Zone Europe/Budapest 1:16:20 - LMT 1890 Nov 1 1:00 Hungary CE%sT 1984 1:00 EU CE%sT -# Iceland -# -# From Adam David (1993-11-06): -# The name of the timezone in Iceland for system / mail / news purposes is GMT. -# -# (1993-12-05): -# This material is paraphrased from the 1988 edition of the University of -# Iceland Almanak. -# -# From January 1st, 1908 the whole of Iceland was standardised at 1 hour -# behind GMT. Previously, local mean solar time was used in different parts -# of Iceland, the almanak had been based on Reykjavík mean solar time which -# was 1 hour and 28 minutes behind GMT. -# -# "first day of winter" referred to [below] means the first day of the 26 weeks -# of winter, according to the old icelandic calendar that dates back to the -# time the norsemen first settled Iceland. The first day of winter is always -# Saturday, but is not dependent on the Julian or Gregorian calendars. -# -# (1993-12-10): -# I have a reference from the Oxford Icelandic-English dictionary for the -# beginning of winter, which ties it to the ecclesiastical calendar (and thus -# to the julian/gregorian calendar) over the period in question. -# the winter begins on the Saturday next before St. Luke's day -# (old style), or on St. Luke's day, if a Saturday. -# St. Luke's day ought to be traceable from ecclesiastical sources. "old style" -# might be a reference to the Julian calendar as opposed to Gregorian, or it -# might mean something else (???). -# -# From Paul Eggert (2014-11-22): -# The information below is taken from the 1988 Almanak; see -# http://www.almanak.hi.is/klukkan.html -# -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Iceland 1917 1919 - Feb 19 23:00 1:00 - -Rule Iceland 1917 only - Oct 21 1:00 0 - -Rule Iceland 1918 1919 - Nov 16 1:00 0 - -Rule Iceland 1921 only - Mar 19 23:00 1:00 - -Rule Iceland 1921 only - Jun 23 1:00 0 - -Rule Iceland 1939 only - Apr 29 23:00 1:00 - -Rule Iceland 1939 only - Oct 29 2:00 0 - -Rule Iceland 1940 only - Feb 25 2:00 1:00 - -Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 - -Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 - -# 1943-1946 - first Sunday in March until first Sunday in winter -Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 - -Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 - -# 1947-1967 - first Sunday in April until first Sunday in winter -Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 - -# 1949 and 1967 Oct transitions delayed by 1 week -Rule Iceland 1949 only - Oct 30 1:00s 0 - -Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - -Rule Iceland 1967 only - Oct 29 1:00s 0 - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Atlantic/Reykjavik -1:28 - LMT 1908 - -1:00 Iceland -01/+00 1968 Apr 7 1:00s - 0:00 - GMT - # Italy +# San Marino +# Vatican City # # From Paul Eggert (2001-03-06): # Sicily and Sardinia each had their own time zones from 1866 to 1893, @@ -1796,19 +1736,12 @@ Rule Italy 1978 only - Oct 1 0:00s 0 - Rule Italy 1979 only - Sep 30 0:00s 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Rome 0:49:56 - LMT 1866 Dec 12 - 0:49:56 - RMT 1893 Oct 31 23:49:56 # Rome Mean + 0:49:56 - RMT 1893 Oct 31 23:00u # Rome Mean 1:00 Italy CE%sT 1943 Sep 10 1:00 C-Eur CE%sT 1944 Jun 4 1:00 Italy CE%sT 1980 1:00 EU CE%sT -# Kosovo -# See Europe/Belgrade. - - -Link Europe/Rome Europe/Vatican -Link Europe/Rome Europe/San_Marino - # Latvia # From Liene Kanepe (1998-09-17): @@ -1891,19 +1824,6 @@ Zone Europe/Riga 1:36:34 - LMT 1880 2:00 - EET 2001 Jan 2 2:00 EU EE%sT -# Liechtenstein - -# From Paul Eggert (2013-09-09): -# Shanks & Pottenger say Vaduz is like Zurich. - -# From Alois Treindl (2019-07-04): -# I was able to access the online archive of the Vaduz paper Vaterland ... -# I could confirm from the paper that Liechtenstein did in fact follow -# the same DST in 1941 and 1942 as Switzerland did. - -Link Europe/Zurich Europe/Vaduz - - # Lithuania # From Paul Eggert (2016-03-18): @@ -1956,45 +1876,6 @@ Zone Europe/Vilnius 1:41:16 - LMT 1880 2:00 - EET 2003 Jan 1 2:00 EU EE%sT -# Luxembourg -# Whitman disagrees with most of these dates in minor ways; -# go with Shanks & Pottenger. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Lux 1916 only - May 14 23:00 1:00 S -Rule Lux 1916 only - Oct 1 1:00 0 - -Rule Lux 1917 only - Apr 28 23:00 1:00 S -Rule Lux 1917 only - Sep 17 1:00 0 - -Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S -Rule Lux 1918 only - Sep Mon>=15 2:00s 0 - -Rule Lux 1919 only - Mar 1 23:00 1:00 S -Rule Lux 1919 only - Oct 5 3:00 0 - -Rule Lux 1920 only - Feb 14 23:00 1:00 S -Rule Lux 1920 only - Oct 24 2:00 0 - -Rule Lux 1921 only - Mar 14 23:00 1:00 S -Rule Lux 1921 only - Oct 26 2:00 0 - -Rule Lux 1922 only - Mar 25 23:00 1:00 S -Rule Lux 1922 only - Oct Sun>=2 1:00 0 - -Rule Lux 1923 only - Apr 21 23:00 1:00 S -Rule Lux 1923 only - Oct Sun>=2 2:00 0 - -Rule Lux 1924 only - Mar 29 23:00 1:00 S -Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 - -Rule Lux 1925 only - Apr 5 23:00 1:00 S -Rule Lux 1926 only - Apr 17 23:00 1:00 S -Rule Lux 1927 only - Apr 9 23:00 1:00 S -Rule Lux 1928 only - Apr 14 23:00 1:00 S -Rule Lux 1929 only - Apr 20 23:00 1:00 S -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun - 1:00 Lux CE%sT 1918 Nov 25 - 0:00 Lux WE%sT 1929 Oct 6 2:00s - 0:00 Belgium WE%sT 1940 May 14 3:00 - 1:00 C-Eur WE%sT 1944 Sep 18 3:00 - 1:00 Belgium CE%sT 1977 - 1:00 EU CE%sT - -# North Macedonia -# See Europe/Belgrade. - # Malta # # From Paul Eggert (2016-10-21): @@ -2009,7 +1890,7 @@ Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 - Rule Malta 1980 only - Mar 31 2:00 1:00 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta +Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta 1:00 Italy CE%sT 1973 Mar 31 1:00 Malta CE%sT 1981 1:00 EU CE%sT @@ -2090,177 +1971,6 @@ Zone Europe/Chisinau 1:55:20 - LMT 1880 # See Romania commentary for the guessed 1997 transition to EU rules. 2:00 Moldova EE%sT -# Monaco -# -# From Michael Deckers (2020-06-12): -# In the "Journal de Monaco" of 1892-05-24, online at -# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/b1c67c12c5af11b41ea888fb048e4fe8.pdf -# we read: ... -# [In virtue of a Sovereign Ordinance of the May 13 of the current [year], -# legal time in the Principality will be set to, from the date of June 1, -# 1892 onwards, to the meridian of Paris, as in France.] -# In the "Journal de Monaco" of 1911-03-28, online at -# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/de74ffb7db53d4f599059fe8f0ed482a.pdf -# we read an ordinance of 1911-03-16: ... -# [Legal time in the Principality will be set, from the date of promulgation -# of the present ordinance, to legal time in France.... Consequently, legal -# time will be retarded by 9 minutes and 21 seconds.] -# -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Monaco 0:29:32 - LMT 1892 Jun 1 - 0:09:21 - PMT 1911 Mar 29 # Paris Mean Time - 0:00 France WE%sT 1945 Sep 16 3:00 - 1:00 France CE%sT 1977 - 1:00 EU CE%sT - -# Montenegro -# See Europe/Belgrade. - -# Netherlands - -# Howse writes that the Netherlands' railways used GMT between 1892 and 1940, -# but for other purposes the Netherlands used Amsterdam mean time. - -# However, Robert H. van Gent writes (2001-04-01): -# Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00 -# Amsterdam mean time) onwards, the whole of the Netherlands (including -# the Dutch railways) was required by law to observe Amsterdam mean time -# (19 minutes 32.13 seconds ahead of GMT). This had already been the -# common practice (except for the railways) for many decades but it was -# not until 1909 when the Dutch government finally defined this by law. -# On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and -# was generally known as Dutch Time ("Nederlandse Tijd"). -# -# (2001-04-08): -# 1892-05-01 was the date when the Dutch railways were by law required to -# observe GMT while the remainder of the Netherlands adhered to the common -# practice of following Amsterdam mean time. -# -# (2001-04-09): -# In 1835 the authorities of the province of North Holland requested the -# municipal authorities of the towns and cities in the province to observe -# Amsterdam mean time but I do not know in how many cases this request was -# actually followed. -# -# From 1852 onwards the Dutch telegraph offices were by law required to -# observe Amsterdam mean time. As the time signals from the observatory of -# Leiden were also distributed by the telegraph system, I assume that most -# places linked up with the telegraph (and railway) system automatically -# adopted Amsterdam mean time. -# -# Although the early Dutch railway companies initially observed a variety -# of times, most of them had adopted Amsterdam mean time by 1858 but it -# was not until 1866 when they were all required by law to observe -# Amsterdam mean time. - -# The data entries before 1945 are taken from -# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm - -# From Paul Eggert (2021-05-09): -# I invented the abbreviations AMT for Amsterdam Mean Time and NST for -# Netherlands Summer Time, used in the Netherlands from 1835 to 1937. - -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time -Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time -Rule Neth 1917 only - Apr 16 2:00s 1:00 NST -Rule Neth 1917 only - Sep 17 2:00s 0 AMT -Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST -Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT -Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST -Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT -Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST -Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST -Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST -# From 1926 through 1939 DST began 05-15, except that it was delayed by a week -# in years when 05-15 fell in the Pentecost weekend. -Rule Neth 1926 1931 - May 15 2:00s 1:00 NST -Rule Neth 1932 only - May 22 2:00s 1:00 NST -Rule Neth 1933 1936 - May 15 2:00s 1:00 NST -Rule Neth 1937 only - May 22 2:00s 1:00 NST -Rule Neth 1937 only - Jul 1 0:00 1:00 S -Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 - -Rule Neth 1938 1939 - May 15 2:00s 1:00 S -Rule Neth 1945 only - Apr 2 2:00s 1:00 S -Rule Neth 1945 only - Sep 16 2:00s 0 - -# -# Amsterdam Mean Time was +00:19:32.13, but the .13 is omitted -# below because the current format requires STDOFF to be an integer. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Amsterdam 0:19:32 - LMT 1835 - 0:19:32 Neth %s 1937 Jul 1 - 0:20 Neth +0020/+0120 1940 May 16 0:00 - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Neth CE%sT 1977 - 1:00 EU CE%sT - -# Norway -# http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks & -# Pottenger. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Norway 1916 only - May 22 1:00 1:00 S -Rule Norway 1916 only - Sep 30 0:00 0 - -Rule Norway 1945 only - Apr 2 2:00s 1:00 S -Rule Norway 1945 only - Oct 1 2:00s 0 - -Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S -Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - -Rule Norway 1965 only - Apr 25 2:00s 1:00 S -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 - 1:00 Norway CE%sT 1940 Aug 10 23:00 - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Norway CE%sT 1980 - 1:00 EU CE%sT - -# Svalbard & Jan Mayen - -# From Steffen Thorsen (2001-05-01): -# Although I could not find it explicitly, it seems that Jan Mayen and -# Svalbard have been using the same time as Norway at least since the -# time they were declared as parts of Norway. Svalbard was declared -# as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan -# Mayen by law of 1930-02-27 no 2, section 2. (From -# and -# ). The law/regulation -# for normal/standard time in Norway is from 1894-06-29 no 1 (came -# into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a -# part of this law since 1925/1930. (From -# ) I have not been -# able to find if Jan Mayen used a different time zone (e.g. -0100) -# before 1930. Jan Mayen has only been "inhabited" since 1921 by -# Norwegian meteorologists and maybe used the same time as Norway ever -# since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since -# before 1895, and therefore probably changed the local time somewhere -# between 1895 and 1925 (inclusive). - -# From Paul Eggert (2013-09-04): -# -# Actually, Jan Mayen was never occupied by Germany during World War II, -# so it must have diverged from Oslo time during the war, as Oslo was -# keeping Berlin time. -# -# says that the meteorologists -# burned down their station in 1940 and left the island, but returned in -# 1941 with a small Norwegian garrison and continued operations despite -# frequent air attacks from Germans. In 1943 the Americans established a -# radiolocating station on the island, called "Atlantic City". Possibly -# the UT offset changed during the war, but I think it unlikely that -# Jan Mayen used German daylight-saving rules. -# -# Svalbard is more complicated, as it was raided in August 1941 by an -# Allied party that evacuated the civilian population to England (says -# ). The Svalbard FAQ -# says that the Germans were -# expelled on 1942-05-14. However, small parties of Germans did return, -# and according to Wilhelm Dege's book "War North of 80" (1954) -# http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html -# the German armed forces at the Svalbard weather station code-named -# Haudegen did not surrender to the Allies until September 1945. -# -# All these events predate our cutoff date of 1970, so use Europe/Oslo -# for these regions. -Link Europe/Oslo Arctic/Longyearbyen - # Poland # The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20), @@ -2313,7 +2023,6 @@ Zone Europe/Warsaw 1:24:00 - LMT 1880 # According to a Portuguese decree (1911-05-26) # https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00. -# Round the old offset to -0:36:45. This agrees with Willett.... # # From Michael Deckers (2018-02-15): # article 5 [of the 1911 decree; Deckers's translation] ...: @@ -2400,6 +2109,7 @@ Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S Rule Port 1983 only - Mar lastSun 2:00s 1:00 S # # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -0:36:44.68 Zone Europe/Lisbon -0:36:45 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT 0:00 Port WE%sT 1966 Apr 3 2:00 @@ -2408,9 +2118,13 @@ Zone Europe/Lisbon -0:36:45 - LMT 1884 0:00 W-Eur WE%sT 1992 Sep 27 1:00s 1:00 EU CE%sT 1996 Mar 31 1:00u 0:00 EU WE%sT -# This Zone can be simplified once we assume zic %z. Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -1:54:32 - HMT 1912 Jan 1 2:00u # Horta MT +# Vanguard section, for zic and other parsers that support %z. +# -2:00 Port %z 1966 Apr 3 2:00 +# -1:00 Port %z 1983 Sep 25 1:00s +# -1:00 W-Eur %z 1992 Sep 27 1:00s +# Rearguard section, for parsers lacking %z; see ziguard.awk. -2:00 Port -02/-01 1942 Apr 25 22:00s -2:00 Port +00 1942 Aug 15 22:00s -2:00 Port -02/-01 1943 Apr 17 22:00s @@ -2422,11 +2136,14 @@ Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -2:00 Port -02/-01 1966 Apr 3 2:00 -1:00 Port -01/+00 1983 Sep 25 1:00s -1:00 W-Eur -01/+00 1992 Sep 27 1:00s +# End of rearguard section. 0:00 EU WE%sT 1993 Mar 28 1:00u -1:00 EU -01/+00 -# This Zone can be simplified once we assume zic %z. Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:07:36 - FMT 1912 Jan 1 1:00u # Funchal MT +# Vanguard section, for zic and other parsers that support %z. +# -1:00 Port %z 1966 Apr 3 2:00 +# Rearguard section, for parsers lacking %z; see ziguard.awk. -1:00 Port -01/+00 1942 Apr 25 22:00s -1:00 Port +01 1942 Aug 15 22:00s -1:00 Port -01/+00 1943 Apr 17 22:00s @@ -2436,6 +2153,7 @@ Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:00 Port -01/+00 1945 Apr 21 22:00s -1:00 Port +01 1945 Aug 25 22:00s -1:00 Port -01/+00 1966 Apr 3 2:00 +# End of rearguard section. 0:00 Port WE%sT 1983 Sep 25 1:00s 0:00 EU WE%sT @@ -2528,7 +2246,7 @@ Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct # the State Duma has approved ... the draft bill on returning to # winter time standard and return Russia 11 time zones. The new # regulations will come into effect on October 26, 2014 at 02:00 ... -# http://asozd2.duma.gov.ru/main.nsf/%28Spravka%29?OpenAgent&RN=431985-6&02 +# http://asozd2.duma.gov.ru/main.nsf/(Spravka)?OpenAgent&RN=431985-6&02 # Here is a link where we put together table (based on approved Bill N # 431985-6) with proposed 11 Russian time zones and corresponding # areas/cities/administrative centers in the Russian Federation (in English): @@ -2854,28 +2572,31 @@ Zone Europe/Simferopol 2:16:24 - LMT 1880 2:00 - EET 1992 Mar 20 # Central Crimea used Moscow time 1994/1997. # -# From Paul Eggert (2006-03-22): -# The _Economist_ (1994-05-28, p 45) reports that central Crimea switched -# from Kiev to Moscow time sometime after the January 1994 elections. +# From Paul Eggert (2022-07-21): +# The _Economist_ (1994-05-28, p 45) reported that central Crimea switched +# from Kyiv to Moscow time sometime after the January 1994 elections. # Shanks (1999) says "date of change uncertain", but implies that it happened # sometime between the 1994 DST switches. Shanks & Pottenger simply say # 1994-09-25 03:00, but that can't be right. For now, guess it -# changed in May. +# changed in May. This change evidently didn't last long; see below. 2:00 C-Eur EE%sT 1994 May -# From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev. - 3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s +# From IATA SSIM (1994/1997), which also said that Kerch is still like Kyiv. + 3:00 C-Eur MSK/MSD 1996 Mar 31 0:00s 3:00 1:00 MSD 1996 Oct 27 3:00s -# IATA SSIM (1997-09) says Crimea switched to EET/EEST. +# IATA SSIM (1997-09) said Crimea switched to EET/EEST. # Assume it happened in March by not changing the clocks. - 3:00 Russia MSK/MSD 1997 3:00 - MSK 1997 Mar lastSun 1:00u # From Alexander Krivenyshev (2014-03-17): # time change at 2:00 (2am) on March 30, 2014 # https://vz.ru/news/2014/3/17/677464.html -# From Paul Eggert (2014-03-30): -# Simferopol and Sevastopol reportedly changed their central town clocks -# late the previous day, but this appears to have been ceremonial -# and the discrepancies are small enough to not worry about. +# From Tim Parenti (2022-07-01), per Paul Eggert (2014-03-30): +# The clocks at the railway station in Simferopol were put forward from 22:00 +# to 24:00 the previous day in a "symbolic ceremony"; however, per +# contemporaneous news reports, "ordinary Crimeans [made] the daylight savings +# time switch at 2am" on Sunday. +# https://www.business-standard.com/article/pti-stories/crimea-to-set-clocks-to-russia-time-114033000014_1.html +# https://www.reuters.com/article/us-ukraine-crisis-crimea-time/crimea-switches-to-moscow-time-amid-incorporation-frenzy-idUKBREA2S0LT20140329 +# https://www.bbc.com/news/av/world-europe-26806583 2:00 EU EE%sT 2014 Mar 30 2:00 4:00 - MSK 2014 Oct 26 2:00s 3:00 - MSK @@ -2935,13 +2656,13 @@ Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3 3:00 - +03 1930 Jun 21 4:00 - +04 1961 Nov 11 4:00 Russia +04/+05 1988 Mar 27 2:00s - 3:00 Russia +03/+04 1991 Mar 31 2:00s + 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 4:00 - +04 1992 Mar 29 2:00s - 3:00 Russia +03/+04 2011 Mar 27 2:00s - 4:00 - +04 2014 Oct 26 2:00s - 3:00 - +03 2018 Oct 28 2:00s + 3:00 Russia MSK/MSD 2011 Mar 27 2:00s + 4:00 - MSK 2014 Oct 26 2:00s + 3:00 - MSK 2018 Oct 28 2:00s 4:00 - +04 2020 Dec 27 2:00s - 3:00 - +03 + 3:00 - MSK # From Paul Eggert (2016-11-11): # Europe/Saratov covers: @@ -2972,11 +2693,11 @@ Zone Europe/Saratov 3:04:18 - LMT 1919 Jul 1 0:00u Zone Europe/Kirov 3:18:48 - LMT 1919 Jul 1 0:00u 3:00 - +03 1930 Jun 21 4:00 Russia +04/+05 1989 Mar 26 2:00s - 3:00 Russia +03/+04 1991 Mar 31 2:00s + 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 4:00 - +04 1992 Mar 29 2:00s - 3:00 Russia +03/+04 2011 Mar 27 2:00s - 4:00 - +04 2014 Oct 26 2:00s - 3:00 - +03 + 3:00 Russia MSK/MSD 2011 Mar 27 2:00s + 4:00 - MSK 2014 Oct 26 2:00s + 3:00 - MSK # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Europe/Samara covers... @@ -3036,11 +2757,12 @@ Zone Europe/Ulyanovsk 3:13:36 - LMT 1919 Jul 1 0:00u # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak # Autonomous Okrug merged to form (90, RU-PER) Perm Krai. -# Milne says Yekaterinburg was 4:02:32.9; round to nearest. +# Milne says Yekaterinburg was 4:02:32.9. # Byalokoz 1919 says its provincial time was based on Perm, at 3:45:05. # Assume it switched on 1916-07-03, the time of the new standard. # The 1919 and 1930 transitions are from Shanks. + #STDOFF 4:02:32.9 Zone Asia/Yekaterinburg 4:02:33 - LMT 1916 Jul 3 3:45:05 - PMT 1919 Jul 15 4:00 4:00 - +04 1930 Jun 21 @@ -3352,8 +3074,8 @@ Zone Asia/Vladivostok 8:47:31 - LMT 1922 Nov 15 # 14-28 **** Tomponsky District # 14-30 **** Ust-Maysky District -# From Arthur David Olson (2012-05-09): -# Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time +# From Arthur David Olson (2022-03-21): +# Tomponsky and Ust-Maysky switched from Vladivostok time to Yakutsk time # in 2011. # From Paul Eggert (2012-11-25): @@ -3478,8 +3200,8 @@ Zone Asia/Srednekolymsk 10:14:52 - LMT 1924 May 2 # Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-22 **** Oymyakonsky District -# From Arthur David Olson (2012-05-09): -# Ojmyakonskij [and the Kuril Islands] switched from +# From Arthur David Olson (2022-03-21): +# Oymyakonsky and the Kuril Islands switched from # Magadan time to Vladivostok time in 2011. # # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02): @@ -3530,11 +3252,13 @@ Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2 11:00 Russia +11/+12 2011 Mar 27 2:00s 12:00 - +12 - -# San Marino -# See Europe/Rome. - +# Bosnia & Herzegovina +# Croatia +# Kosovo +# Montenegro +# North Macedonia # Serbia +# Slovenia # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Belgrade 1:22:00 - LMT 1884 1:00 - CET 1941 Apr 18 23:00 @@ -3546,17 +3270,6 @@ Zone Europe/Belgrade 1:22:00 - LMT 1884 # Shanks & Pottenger don't give as much detail, so go with Koželj. 1:00 - CET 1982 Nov 27 1:00 EU CE%sT -Link Europe/Belgrade Europe/Ljubljana # Slovenia -Link Europe/Belgrade Europe/Podgorica # Montenegro -Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina -Link Europe/Belgrade Europe/Skopje # North Macedonia -Link Europe/Belgrade Europe/Zagreb # Croatia - -# Slovakia -Link Europe/Prague Europe/Bratislava - -# Slovenia -# See Europe/Belgrade. # Spain # @@ -3642,11 +3355,11 @@ Rule SpainAfrica 1977 only - Sep 28 0:00 0 - Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S Rule SpainAfrica 1978 only - Aug 4 0:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16 +Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00u 0:00 Spain WE%sT 1940 Mar 16 23:00 1:00 Spain CE%sT 1979 1:00 EU CE%sT -Zone Africa/Ceuta -0:21:16 - LMT 1900 Dec 31 23:38:44 +Zone Africa/Ceuta -0:21:16 - LMT 1901 Jan 1 0:00u 0:00 - WET 1918 May 6 23:00 0:00 1:00 WEST 1918 Oct 7 23:00 0:00 - WET 1924 @@ -3663,64 +3376,11 @@ Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C. # IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u. # Ignore this for now, as the Canaries are part of the EU. -# Sweden - -# From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger: -# -# The law "Svensk författningssamling 1878, no 14" about standard time in 1879: -# From the beginning of 1879 (that is 01-01 00:00) the time for all -# places in the country is "the mean solar time for the meridian at -# three degrees, or twelve minutes of time, to the west of the -# meridian of the Observatory of Stockholm". The law is dated 1878-05-31. -# -# The observatory at that time had the meridian 18° 03' 30" -# eastern longitude = 01:12:14 in time. Less 12 minutes gives the -# national standard time as 01:00:14 ahead of GMT.... -# -# About the beginning of CET in Sweden. The lawtext ("Svensk -# författningssamling 1899, no 44") states, that "from the beginning -# of 1900... ... the same as the mean solar time for the meridian at -# the distance of one hour of time from the meridian of the English -# observatory at Greenwich, or at 12 minutes 14 seconds to the west -# from the meridian of the Observatory of Stockholm". The law is dated -# 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time -# in Sweden is 01:00:00 ahead of GMT. -# -# 1916: The lawtext ("Svensk författningssamling 1916, no 124") states -# that "1916-05-15 is considered to begin one hour earlier". It is -# pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00.... -# Further the law says, that "1916-09-30 is considered to end one hour later". -# -# The laws regulating [DST] are available on the site of the Swedish -# Parliament beginning with 1985 - the laws regulating 1980/1984 are -# not available on the site (to my knowledge they are only available -# in Swedish): (type -# "sommartid" without the quotes in the field "Fritext" and then click -# the Sök-button). -# -# (2001-05-13): -# -# I have now found a newspaper stating that at 1916-10-01 01:00 -# summertime the church-clocks etc were set back one hour to show -# 1916-10-01 00:00 standard time. The article also reports that some -# people thought the switch to standard time would take place already -# at 1916-10-01 00:00 summer time, but they had to wait for another -# hour before the event took place. -# -# Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. - -# An extra-special abbreviation style is SET for Swedish Time (svensk -# normaltid) 1879-1899, 3° west of the Stockholm Observatory. - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 - 1:00:14 - SET 1900 Jan 1 # Swedish Time - 1:00 - CET 1916 May 14 23:00 - 1:00 1:00 CEST 1916 Oct 1 1:00 - 1:00 - CET 1980 - 1:00 EU CE%sT +# Germany (Busingen enclave) +# Liechtenstein # Switzerland +# # From Howse: # By the end of the 18th century clocks and watches became commonplace # and their performance improved enormously. Communities began to keep @@ -3812,6 +3472,19 @@ Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 # 1853-07-16, though it probably occurred at some other date in Zurich, and # legal civil time probably changed at still some other transition date. +# From Tobias Conradi (2011-09-12): +# Büsingen , surrounded by the Swiss canton +# Schaffhausen, did not start observing DST in 1980 as the rest of DE +# (West Germany at that time) and DD (East Germany at that time) did. +# DD merged into DE, the area is currently covered by code DE in ISO 3166-1, +# which in turn is covered by the zone Europe/Berlin. +# +# Source for the time in Büsingen 1980: +# http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3 +# +# From Arthur David Olson (2012-03-03): +# Büsingen and Zurich have shared clocks since 1970. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - @@ -4024,11 +3697,10 @@ Zone Europe/Istanbul 1:55:52 - LMT 1880 2:00 1:00 EEST 2015 Nov 8 1:00u 2:00 EU EE%sT 2016 Sep 7 3:00 - +03 -Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # Ukraine # -# From Alois Triendl (2014-03-01): +# From Alois Treindl (2014-03-01): # REGULATION A N O V A on March 20, 1992 N 139 ... means that from # 1992 on, Ukraine had DST with begin time at 02:00 am, on last Sunday # in March, and end time 03:00 am, last Sunday in September.... @@ -4045,8 +3717,8 @@ Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # US colleague David Cochrane) are still trying to get more # information upon these local deviations from Kiev rules. # -# From Paul Eggert (2022-02-08): -# For now, assume that Ukraine's other three zones followed the same rules, +# From Paul Eggert (2022-08-27): +# For now, assume that Ukraine's zones all followed the same rules, # except that Crimea switched to Moscow time in 1994 as described elsewhere. # From Igor Karpov, who works for the Ukrainian Ministry of Justice, @@ -4088,7 +3760,7 @@ Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # The law documents themselves are at # http://w1.c1.rada.gov.ua/pls/zweb_n/webproc4_1?id=&pf3511=41484 -# From Vladimir in Moscow via Alois Treindl re Kiev time 1991/2 (2014-02-28): +# From Vladimir in Moscow via Alois Treindl re Kyiv time 1991/2 (2014-02-28): # First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST: # 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST # 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST @@ -4116,23 +3788,9 @@ Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # * Ukrainian Government's Resolution of 20.03.1992, No. 139. # http://www.uazakon.com/documents/date_8u/pg_grcasa.htm -# From Paul Eggert (2018-10-03): -# As is usual in tzdb, Ukrainian zones use the most common English spellings. -# For example, tzdb uses Europe/Kiev, as "Kiev" is the most common spelling in -# English for Ukraine's capital, even though it is certainly wrong as a -# transliteration of the Ukrainian "Київ". This is similar to tzdb's use of -# Europe/Prague, which is certainly wrong as a transliteration of the Czech -# "Praha". ("Kiev" came from old Slavic via Russian to English, and "Prague" -# came from old Slavic via French to English, so the two cases have something -# in common.) Admittedly English-language spelling of Ukrainian names is -# controversial, and some day "Kyiv" may become substantially more popular in -# English; in the meantime, stick with the traditional English "Kiev" as that -# means less disruption for our users. - # Zone NAME STDOFF RULES FORMAT [UNTIL] -# This represents most of Ukraine. See above for the spelling of "Kiev". -Zone Europe/Kiev 2:02:04 - LMT 1880 - 2:02:04 - KMT 1924 May 2 # Kiev Mean Time +Zone Europe/Kyiv 2:02:04 - LMT 1880 + 2:02:04 - KMT 1924 May 2 # Kyiv Mean Time 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Sep 20 1:00 C-Eur CE%sT 1943 Nov 6 @@ -4140,37 +3798,6 @@ Zone Europe/Kiev 2:02:04 - LMT 1880 2:00 1:00 EEST 1991 Sep 29 3:00 2:00 C-Eur EE%sT 1996 May 13 2:00 EU EE%sT -# Transcarpathia used CET 1990/1991. -# "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but -# "Uzhgorod" is more common in English. -Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct - 1:00 - CET 1940 - 1:00 C-Eur CE%sT 1944 Oct - 1:00 1:00 CEST 1944 Oct 26 - 1:00 - CET 1945 Jun 29 - 3:00 Russia MSK/MSD 1990 - 3:00 - MSK 1990 Jul 1 2:00 - 1:00 - CET 1991 Mar 31 3:00 - 2:00 - EET 1992 Mar 20 - 2:00 C-Eur EE%sT 1996 May 13 - 2:00 EU EE%sT -# Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991. -# "Zaporizhia" is the transliteration of the Ukrainian name, but -# "Zaporozh'ye" is more common in English. Use the common English -# spelling, except omit the apostrophe as it is not allowed in -# portable Posix file names. -Zone Europe/Zaporozhye 2:20:40 - LMT 1880 - 2:20 - +0220 1924 May 2 - 2:00 - EET 1930 Jun 21 - 3:00 - MSK 1941 Aug 25 - 1:00 C-Eur CE%sT 1943 Oct 25 - 3:00 Russia MSK/MSD 1991 Mar 31 2:00 - 2:00 E-Eur EE%sT 1992 Mar 20 - 2:00 C-Eur EE%sT 1996 May 13 - 2:00 EU EE%sT - -# Vatican City -# See Europe/Rome. ############################################################################### diff --git a/inst/tzdata/iso3166.tab b/inst/tzdata/iso3166.tab index a4ff61a..be3348d 100644 --- a/inst/tzdata/iso3166.tab +++ b/inst/tzdata/iso3166.tab @@ -3,13 +3,13 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # -# From Paul Eggert (2015-05-02): +# From Paul Eggert (2022-11-18): # This file contains a table of two-letter country codes. Columns are # separated by a single tab. Lines beginning with '#' are comments. # All text uses UTF-8 encoding. The columns of the table are as follows: # # 1. ISO 3166-1 alpha-2 country code, current as of -# ISO 3166-1 N976 (2018-11-06). See: Updates on ISO 3166-1 +# ISO 3166-1 N1087 (2022-09-02). See: Updates on ISO 3166-1 # https://isotc.iso.org/livelink/livelink/Open/16944257 # 2. The usual English name for the coded region, # chosen so that alphabetic sorting of subsets produces helpful lists. @@ -238,7 +238,7 @@ SY Syria SZ Eswatini (Swaziland) TC Turks & Caicos Is TD Chad -TF French Southern & Antarctic Lands +TF French S. Terr. TG Togo TH Thailand TJ Tajikistan diff --git a/inst/tzdata/leap-seconds.list b/inst/tzdata/leap-seconds.list index 0f43115..17e3a10 100644 --- a/inst/tzdata/leap-seconds.list +++ b/inst/tzdata/leap-seconds.list @@ -204,10 +204,10 @@ # current -- the update time stamp, the data and the name of the file # will not change. # -# Updated through IERS Bulletin C63 -# File expires on: 28 December 2022 +# Updated through IERS Bulletin C65 +# File expires on: 28 December 2023 # -#@ 3881174400 +#@ 3912710400 # 2272060800 10 # 1 Jan 1972 2287785600 11 # 1 Jul 1972 @@ -252,4 +252,4 @@ # the hash line is also ignored in the # computation. # -#h 732b2044 5863a938 b7e43179 1339c710 ded63837 +#h e76a99dc 65f15cc7 e613e040 f5078b5e b23834fe diff --git a/inst/tzdata/leapseconds b/inst/tzdata/leapseconds index ffa5eb8..a6a170a 100644 --- a/inst/tzdata/leapseconds +++ b/inst/tzdata/leapseconds @@ -72,11 +72,11 @@ Leap 2016 Dec 31 23:59:60 + S # Any additional leap seconds will come after this. # This Expires line is commented out for now, # so that pre-2020a zic implementations do not reject this file. -#Expires 2022 Dec 28 00:00:00 +#Expires 2023 Dec 28 00:00:00 # POSIX timestamps for the data in this file: #updated 1467936000 (2016-07-08 00:00:00 UTC) -#expires 1672185600 (2022-12-28 00:00:00 UTC) +#expires 1703721600 (2023-12-28 00:00:00 UTC) -# Updated through IERS Bulletin C63 -# File expires on: 28 December 2022 +# Updated through IERS Bulletin C65 +# File expires on: 28 December 2023 diff --git a/inst/tzdata/leapseconds.awk b/inst/tzdata/leapseconds.awk old mode 100755 new mode 100644 index b6c48bc..7d2556b --- a/inst/tzdata/leapseconds.awk +++ b/inst/tzdata/leapseconds.awk @@ -104,18 +104,23 @@ BEGIN { } END { - sstamp_to_ymdhMs(expires, ss_NTP) - print "" - print "# UTC timestamp when this leap second list expires." - print "# Any additional leap seconds will come after this." - if (! EXPIRES_LINE) { - print "# This Expires line is commented out for now," - print "# so that pre-2020a zic implementations do not reject this file." + + if (expires) { + sstamp_to_ymdhMs(expires, ss_NTP) + + print "# UTC timestamp when this leap second list expires." + print "# Any additional leap seconds will come after this." + if (! EXPIRES_LINE) { + print "# This Expires line is commented out for now," + print "# so that pre-2020a zic implementations do not reject this file." + } + printf "%sExpires %.4d\t%s\t%.2d\t%.2d:%.2d:%.2d\n", \ + EXPIRES_LINE ? "" : "#", \ + ss_year, monthabbr[ss_month], ss_mday, ss_hour, ss_min, ss_sec + } else { + print "# (No Expires line, since the expires time is unknown.)" } - printf "%sExpires %.4d\t%s\t%.2d\t%.2d:%.2d:%.2d\n", \ - EXPIRES_LINE ? "" : "#", \ - ss_year, monthabbr[ss_month], ss_mday, ss_hour, ss_min, ss_sec # The difference between the NTP and POSIX epochs is 70 years # (including 17 leap days), each 24 hours of 60 minutes of 60 @@ -124,15 +129,22 @@ END { print "" print "# POSIX timestamps for the data in this file:" - sstamp_to_ymdhMs(updated, ss_NTP) - printf "#updated %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ - updated - epoch_minus_NTP, \ - ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec - sstamp_to_ymdhMs(expires, ss_NTP) - printf "#expires %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ - expires - epoch_minus_NTP, \ - ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec - + if (updated) { + sstamp_to_ymdhMs(updated, ss_NTP) + printf "#updated %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ + updated - epoch_minus_NTP, \ + ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec + } else { + print "#(updated time unknown)" + } + if (expires) { + sstamp_to_ymdhMs(expires, ss_NTP) + printf "#expires %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ + expires - epoch_minus_NTP, \ + ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec + } else { + print "#(expires time unknown)" + } printf "\n%s", last_lines } diff --git a/inst/tzdata/northamerica b/inst/tzdata/northamerica index fb5c94b..d8e3601 100644 --- a/inst/tzdata/northamerica +++ b/inst/tzdata/northamerica @@ -276,9 +276,10 @@ Zone PST8PDT -8:00 US P%sT # -10 Standard Alaska Time (AST) Alaska-Hawaii standard time (AHST) # -11 (unofficial) Nome (NST) Bering standard time (BST) # -# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: -# Public law 106-564 (2000-12-23) introduced ... "Chamorro Standard Time" +# From Paul Eggert (2023-01-23), from a 2001-01-08 heads-up from Rives McDow: +# Public law 106-564 (2000-12-23) introduced "Chamorro standard time" # for time in Guam and the Northern Marianas. See the file "australasia". +# Also see 15 U.S.C. §263 . # # From Paul Eggert (2015-04-17): # HST and HDT are standardized abbreviations for Hawaii-Aleutian @@ -344,8 +345,7 @@ Zone PST8PDT -8:00 US P%sT # From Paul Eggert (2014-09-06): # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208 # says that New York City Hall time was 3 minutes 58.4 seconds fast of -# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the -# nearest second. +# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. # Rule NAME FROM TO - IN ON AT SAVE LETTER Rule NYC 1920 only - Mar lastSun 2:00 1:00 D @@ -354,7 +354,8 @@ Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 + #STDOFF -4:56:01.6 +Zone America/New_York -4:56:02 - LMT 1883 Nov 18 17:00u -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 -5:00 US E%sT 1946 @@ -439,7 +440,7 @@ Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 +Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1920 -6:00 Chicago C%sT 1936 Mar 1 2:00 -5:00 - EST 1936 Nov 15 2:00 @@ -448,7 +449,7 @@ Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 -6:00 Chicago C%sT 1967 -6:00 US C%sT # Oliver County, ND switched from mountain to central time on 1992-10-25. -Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 +Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 19:00u -7:00 US M%sT 1992 Oct 25 2:00 -6:00 US C%sT # Morton County, ND, switched from mountain to central time on @@ -458,7 +459,7 @@ Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 # Jones, Mellette, and Todd Counties in South Dakota; # but in practice these other counties were already observing central time. # See . -Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21 +Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 19:00u -7:00 US M%sT 2003 Oct 26 2:00 -6:00 US C%sT @@ -475,7 +476,7 @@ Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21 # largest city in Mercer County). Google Maps places Beulah's city hall # at 47° 15' 51" N, 101° 46' 40" W, which yields an offset of 6h47'07". -Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53 +Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 19:00u -7:00 US M%sT 2010 Nov 7 2:00 -6:00 US C%sT @@ -507,7 +508,7 @@ Rule Denver 1921 only - May 22 2:00 0 S Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D Rule Denver 1965 1966 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 +Zone America/Denver -6:59:56 - LMT 1883 Nov 18 19:00u -7:00 US M%sT 1920 -7:00 Denver M%sT 1942 -7:00 US M%sT 1946 @@ -560,7 +561,7 @@ Rule CA 1950 1966 - Apr lastSun 1:00 1:00 D Rule CA 1950 1961 - Sep lastSun 2:00 0 S Rule CA 1962 1966 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 +Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 20:00u -8:00 US P%sT 1946 -8:00 CA P%sT 1967 -8:00 US P%sT @@ -595,7 +596,7 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 # local times of other Alaskan locations so that they change simultaneously. # From Paul Eggert (2014-07-18): -# One opinion of the early-1980s turmoil in Alaska over time zones and +# One opinion of the early 1980s turmoil in Alaska over time zones and # daylight saving time appeared as graffiti on a Juneau airport wall: # "Welcome to Juneau. Please turn your watch back to the 19th century." # See: Turner W. Alaska's four time zones now two. NY Times 1983-11-01. @@ -667,6 +668,10 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 # So they won't be waiting for Alaska to join them on 2019-03-10, but will # rather change their clocks twice in seven weeks. +# From Paul Eggert (2023-01-23): +# America/Adak is for the Aleutian Islands that are part of Alaska +# and are west of 169.5° W. + # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32 -8:57:41 - LMT 1900 Aug 20 12:00 @@ -822,14 +827,13 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 # Go with the Arizona State Library instead. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 +Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 19:00u -7:00 US M%sT 1944 Jan 1 0:01 -7:00 - MST 1944 Apr 1 0:01 -7:00 US M%sT 1944 Oct 1 0:01 -7:00 - MST 1967 -7:00 US M%sT 1968 Mar 21 -7:00 - MST -Link America/Phoenix America/Creston # From Arthur David Olson (1988-02-13): # A writer from the Inter Tribal Council of Arizona, Inc., @@ -850,7 +854,7 @@ Link America/Phoenix America/Creston # switched four weeks late in 1974. # # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 +Zone America/Boise -7:44:49 - LMT 1883 Nov 18 20:00u -8:00 US P%sT 1923 May 13 2:00 -7:00 US M%sT 1974 -7:00 - MST 1974 Feb 3 2:00 @@ -922,7 +926,7 @@ Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 +Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1920 -6:00 Indianapolis C%sT 1942 -6:00 US C%sT 1946 @@ -942,7 +946,7 @@ Rule Marengo 1951 only - Sep lastSun 2:00 0 S Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 +Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1951 -6:00 Marengo C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 @@ -966,7 +970,7 @@ Rule Vincennes 1960 only - Oct lastSun 2:00 0 S Rule Vincennes 1961 only - Sep lastSun 2:00 0 S Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 +Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1946 -6:00 Vincennes C%sT 1964 Apr 26 2:00 -5:00 - EST 1969 @@ -986,7 +990,7 @@ Rule Perry 1955 1960 - Sep lastSun 2:00 0 S Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D Rule Perry 1961 1963 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57 +Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1946 -6:00 Perry C%sT 1964 Apr 26 2:00 -5:00 - EST 1967 Oct 29 2:00 @@ -1003,7 +1007,7 @@ Rule Pike 1955 1960 - Sep lastSun 2:00 0 S Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D Rule Pike 1961 1964 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53 +Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1955 -6:00 Pike C%sT 1965 Apr 25 2:00 -5:00 - EST 1966 Oct 30 2:00 @@ -1025,7 +1029,7 @@ Rule Starke 1955 1956 - Oct lastSun 2:00 0 S Rule Starke 1957 1958 - Sep lastSun 2:00 0 S Rule Starke 1959 1961 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 +Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1947 -6:00 Starke C%sT 1962 Apr 29 2:00 -5:00 - EST 1963 Oct 27 2:00 @@ -1041,7 +1045,7 @@ Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 +Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1946 -6:00 Pulaski C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 @@ -1052,7 +1056,7 @@ Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 # # Switzerland County, Indiana, did not observe DST from 1973 through 2005. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 +Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1954 Apr 25 2:00 -5:00 - EST 1969 -5:00 US E%sT 1973 @@ -1088,7 +1092,7 @@ Rule Louisville 1950 1961 - Apr lastSun 2:00 1:00 D Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S Rule Louisville 1956 1961 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 +Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1921 -6:00 Louisville C%sT 1942 -6:00 US C%sT 1946 @@ -1122,7 +1126,7 @@ Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 # Federal Register 65, 160 (2000-08-17), pp 50154-50158. # https://www.gpo.gov/fdsys/pkg/FR-2000-08-17/html/00-20854.htm # -Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 +Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 18:00u -6:00 US C%sT 1946 -6:00 - CST 1968 -6:00 US C%sT 2000 Oct 29 2:00 @@ -1603,23 +1607,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # Ontario -# From Paul Eggert (2006-07-09): -# Shanks & Pottenger write that since 1970 most of Ontario has been like -# Toronto. -# Thunder Bay skipped DST in 1973. -# Many smaller locales did not observe peacetime DST until 1974; -# Nipigon (EST) and Rainy River (CST) are the largest that we know of. -# Far west Ontario is like Winnipeg; far east Quebec is like Halifax. - -# From Jeffery Nichols (2020-02-06): -# According to the [Shanks] atlas, those western Ontario zones are huge, -# covering most of Ontario northwest of Sault Ste Marie and Timmins. -# The zones seem to include towns bigger than the ones they're named after, -# like Dryden in America/Rainy_River and Wawa (and maybe Attawapiskat) in -# America/Nipigon. I assume it's too much trouble to change the name of the -# zone (like when you found out that America/Glace_Bay includes Sydney, Nova -# Scotia).... - # From Mark Brader (2003-07-26): # [According to the Toronto Star] Orillia, Ontario, adopted DST # effective Saturday, 1912-06-22, 22:00; the article mentions that @@ -1640,17 +1627,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # From Mark Brader (2010-03-06): # -# Currently the database has: -# -# # Ontario -# -# # From Paul Eggert (2006-07-09): -# # Shanks & Pottenger write that since 1970 most of Ontario has been like -# # Toronto. -# # Thunder Bay skipped DST in 1973. -# # Many smaller locales did not observe peacetime DST until 1974; -# # Nipigon (EST) and Rainy River (CST) are the largest that we know of. -# # In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom # right corner of page 1, it says that Toronto will return to standard # time at 2 am Sunday morning (which agrees with the database), and that: @@ -1658,10 +1634,8 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # The one-hour setback will go into effect throughout most of Ontario, # except in areas like Windsor which remains on standard time all year. # -# Windsor is, of course, a lot larger than Nipigon. -# -# I only came across this incidentally. I don't know if Windsor began -# observing DST when Detroit did, or in 1974, or on some other date. +# ... I don't know if Windsor began observing DST when Detroit did, +# or in 1974, or on some other date. # # By the way, the article continues by noting that: # @@ -1743,23 +1717,7 @@ Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S # Toronto Star, which said that DST was ending 1971-10-31 as usual. Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S -# From Paul Eggert (2003-07-27): -# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and -# Port Arthur, Ontario, the principle of the Bill has been in -# operation for the past three years, and in the City of Moose Jaw, -# Saskatchewan, for one year." - -# From David Bryan via Tory Tronrud, Director/Curator, -# Thunder Bay Museum (2003-11-12): -# There is some suggestion, however, that, by-law or not, daylight -# savings time was being practiced in Fort William and Port Arthur -# before 1909.... [I]n 1910, the line between the Eastern and Central -# Time Zones was permanently moved about two hundred miles west to -# include the Thunder Bay area.... When Canada adopted daylight -# savings time in 1916, Fort William and Port Arthur, having done so -# already, did not change their clocks.... During the Second World -# War,... [t]he cities agreed to implement DST during the summer -# months for the remainder of the war years. +# The Bahamas match Toronto since 1970. # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Toronto -5:17:32 - LMT 1895 @@ -1768,22 +1726,6 @@ Zone America/Toronto -5:17:32 - LMT 1895 -5:00 Canada E%sT 1946 -5:00 Toronto E%sT 1974 -5:00 Canada E%sT -Link America/Toronto America/Nassau -Zone America/Thunder_Bay -5:57:00 - LMT 1895 - -6:00 - CST 1910 - -5:00 - EST 1942 - -5:00 Canada E%sT 1970 - -5:00 Toronto E%sT 1973 - -5:00 - EST 1974 - -5:00 Canada E%sT -Zone America/Nipigon -5:53:04 - LMT 1895 - -5:00 Canada E%sT 1940 Sep 29 - -5:00 1:00 EDT 1942 Feb 9 2:00s - -5:00 Canada E%sT -Zone America/Rainy_River -6:18:16 - LMT 1895 - -6:00 Canada C%sT 1940 Sep 29 - -6:00 1:00 CDT 1942 Feb 9 2:00s - -6:00 Canada C%sT # For Atikokan see America/Panama. @@ -2032,6 +1974,37 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884 # Northwest Territories, Nunavut, Yukon +# From Chris Walton (2022-11-06): +# Whitehorse Star - Thursday April 22, 1965 - page 1 +# title: DST Starts Monday ... +# https://www.newspapers.com/image/578587481/ +# The title of this first article is wrong and/or misleading. +# Also, the start time shown in the article is vague; it simply says "after +# midnight" when it probably should have stated 2:00a.m.... +# +# Whitehorse Star - Monday October 25, 1965 - page 15 ... +# https://www.newspapers.com/image/578589147/ +# The 1965 Yukon Council minutes can be found here: +# http://assets.yukonarchives.ca/PER_YG_06_1965_C20_S02_v1.pdf +# ... I do not currently believe that NWT touched any of its clocks in 1965.... +# +# Whitehorse Star - Thursday Feb 24,1966 - page 2 +# title: It's Time for YDT ... +# https://www.newspapers.com/image/578575979/ ... +# America/Whitehorse as a permanent change from UTC-9(YST) to +# UTC-8(PST) at 00:00 on Sunday February 27, 1966.... +# +# Whitehorse Star - Friday April 28,1972 - page 6 +# title: Daylight Saving Time for N.W.T.... +# https://www.newspapers.com/image/578701610/ ... +# Nunavut and NWT zones ... DST starting in 1972.... Start and End ... +# should be the same as the rest of Canada +# +# +# From Paul Eggert (2022-11-06): +# For now, assume Yukon's 1965-04-22 spring forward was 00:00 -> 02:00, as this +# seems likely than 02:00 -> 04:00 and matches "after midnight". + # From Paul Eggert (2006-03-22): # Dawson switched to PST in 1973. Inuvik switched to MST in 1979. # Mathew Englander (1996-10-07) gives the following refs: @@ -2146,52 +2119,22 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884 # * Interpretation Act, RSY 2002, c 125 # https://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html +# From Chris Walton (2022-11-06): +# The 5th edition of the Atlas of Canada contains a time zone map that +# shows both legislated and observed time zone boundaries. +# All communities on Baffin Island are shown to be observing Eastern time. +# The date on the map is 1984. +# https://ftp.maps.canada.ca/pub/nrcan_rncan/raster/atlas_5_ed/eng/other/referencemaps/mcr4056.pdf + # From Rives McDow (1999-09-04): # Nunavut ... moved ... to incorporate the whole territory into one time zone. # Nunavut moves to single time zone Oct. 31 # http://www.nunatsiaq.com/nunavut/nvt90903_13.html -# -# From Antoine Leca (1999-09-06): -# We then need to create a new timezone for the Kitikmeot region of Nunavut -# to differentiate it from the Yellowknife region. # From Paul Eggert (1999-09-20): # Basic Facts: The New Territory # http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html -# (1999) reports that Pangnirtung operates on eastern time, -# and that Coral Harbour does not observe DST. We don't know when -# Pangnirtung switched to eastern time; we'll guess 1995. - -# From Rives McDow (1999-11-08): -# On October 31, when the rest of Nunavut went to Central time, -# Pangnirtung wobbled. Here is the result of their wobble: -# -# The following businesses and organizations in Pangnirtung use Central Time: -# -# First Air, Power Corp, Nunavut Construction, Health Center, RCMP, -# Eastern Arctic National Parks, A & D Specialist -# -# The following businesses and organizations in Pangnirtung use Eastern Time: -# -# Hamlet office, All other businesses, Both schools, Airport operator -# -# This has made for an interesting situation there, which warranted the news. -# No one there that I spoke with seems concerned, or has plans to -# change the local methods of keeping time, as it evidently does not -# really interfere with any activities or make things difficult locally. -# They plan to celebrate New Year's turn-over twice, one hour apart, -# so it appears that the situation will last at least that long. -# The Nunavut Intergovernmental Affairs hopes that they will "come to -# their senses", but the locals evidently don't see any problem with -# the current state of affairs. - -# From Michaela Rodrigue, writing in the -# Nunatsiaq News (1999-11-19): -# http://www.nunatsiaqonline.ca/archives/nunavut991130/nvt91119_17.html -# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones, -# central - or Nunavut time - for government offices, and eastern time -# for municipal offices and schools.... Igloolik [was similar but then] -# made the switch to central time on Saturday, Nov. 6. +# (1999) reports that ... Coral Harbour does not observe DST. # From Paul Eggert (2000-10-02): # Matthews and Vincent (1998) say the following, but we lack histories @@ -2350,18 +2293,12 @@ Rule NT_YK 1919 only - Nov 1 0:00 0 S Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace Rule NT_YK 1945 only - Sep 30 2:00 0 S -Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD -Rule NT_YK 1965 only - Oct lastSun 2:00 0 S -Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D -Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S +Rule NT_YK 1972 1986 - Apr lastSun 2:00 1:00 D +Rule NT_YK 1972 2006 - Oct lastSun 2:00 0 S Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D +Rule Yukon 1965 only - Apr lastSun 0:00 2:00 DD +Rule Yukon 1965 only - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -# aka Panniqtuuq -Zone America/Pangnirtung 0 - -00 1921 # trading post est. - -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00 - -5:00 Canada E%sT 1999 Oct 31 2:00 - -6:00 Canada C%sT 2000 Oct 29 2:00 - -5:00 Canada E%sT # formerly Frobisher Bay Zone America/Iqaluit 0 - -00 1942 Aug # Frobisher Bay est. -5:00 NT_YK E%sT 1999 Oct 31 2:00 @@ -2386,21 +2323,20 @@ Zone America/Cambridge_Bay 0 - -00 1920 # trading post est.? -5:00 - EST 2000 Nov 5 0:00 -6:00 - CST 2001 Apr 1 3:00 -7:00 Canada M%sT -Zone America/Yellowknife 0 - -00 1935 # Yellowknife founded? - -7:00 NT_YK M%sT 1980 - -7:00 Canada M%sT Zone America/Inuvik 0 - -00 1953 # Inuvik founded -8:00 NT_YK P%sT 1979 Apr lastSun 2:00 -7:00 NT_YK M%sT 1980 -7:00 Canada M%sT Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 - -9:00 NT_YK Y%sT 1967 May 28 0:00 - -8:00 NT_YK P%sT 1980 + -9:00 NT_YK Y%sT 1965 + -9:00 Yukon Y%sT 1966 Feb 27 0:00 + -8:00 - PST 1980 -8:00 Canada P%sT 2020 Nov 1 -7:00 - MST Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 - -9:00 NT_YK Y%sT 1973 Oct 28 0:00 - -8:00 NT_YK P%sT 1980 + -9:00 NT_YK Y%sT 1965 + -9:00 Yukon Y%sT 1973 Oct 28 0:00 + -8:00 - PST 1980 -8:00 Canada P%sT 2020 Nov 1 -7:00 - MST @@ -2616,7 +2552,23 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # 5- The islands, reefs and keys shall take their timezone from the # longitude they are located at. +# From Paul Eggert (2022-10-28): +# The new Mexican law was published today: +# https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 +# This abolishes DST except where US DST rules are observed, +# and in addition changes all of Chihuahua to -06 with no DST. + +# From Heitor David Pinto (2022-11-28): +# Now the northern [municipios] want to have the same time zone as the +# respective neighboring cities in the US, for example Juárez in UTC-7 with +# DST, matching El Paso, and Ojinaga in UTC-6 with DST, matching Presidio.... +# the president authorized the publication of the decree for November 29, +# so the time change would occur on November 30 at 0:00. +# http://puentelibre.mx/noticia/ciudad_juarez_cambio_horario_noviembre_2022/ + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S +Rule Mexico 1931 only - May 1 23:00 1:00 D +Rule Mexico 1931 only - Oct 1 0:00 0 S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D @@ -2629,89 +2581,109 @@ Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D Rule Mexico 2001 only - Sep lastSun 2:00 0 S -Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D -Rule Mexico 2002 max - Oct lastSun 2:00 0 S +Rule Mexico 2002 2022 - Apr Sun>=1 2:00 1:00 D +Rule Mexico 2002 2022 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] # Quintana Roo; represented by Cancún -Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 +Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 6:00u -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT 2015 Feb 1 2:00 -5:00 - EST # Campeche, Yucatán; represented by Mérida -Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 +Zone America/Merida -5:58:28 - LMT 1922 Jan 1 6:00u -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Nuevo León, Tamaulipas (near US border) -# This includes the following municipalities: -# in Coahuila: Ocampo, Acuña, Zaragoza, Jiménez, Piedras Negras, Nava, -# Guerrero, Hidalgo. -# in Nuevo León: Anáhuac, Los Aldama. +# This includes the following municipios: +# in Coahuila: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, +# Ocampo, Piedras Negras, Villa Unión, Zaragoza +# in Nuevo León: Anáhuac # in Tamaulipas: Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo, # Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso, Matamoros. -# See: Inicia mañana Horario de Verano en zona fronteriza, El Universal, -# 2016-03-12 -# http://www.eluniversal.com.mx/articulo/estados/2016/03/12/inicia-manana-horario-de-verano-en-zona-fronteriza -Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00 +# https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 +Zone America/Matamoros -6:30:00 - LMT 1922 Jan 1 6:00u -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT 2010 -6:00 US C%sT # Durango; Coahuila, Nuevo León, Tamaulipas (away from US border) -Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 +Zone America/Monterrey -6:41:16 - LMT 1922 Jan 1 6:00u -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico -Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 +Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 + -7:00 Mexico M%sT 1932 Apr 1 -6:00 Mexico C%sT 2001 Sep 30 2:00 -6:00 - CST 2002 Feb 20 -6:00 Mexico C%sT -# Chihuahua (near US border) -# This includes the municipalities of Janos, Ascensión, Juárez, Guadalupe, -# Práxedis G Guerrero, Coyame del Sotol, Ojinaga, and Manuel Benavides. -# (See the 2016-03-12 El Universal source mentioned above.) -Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20 +# Chihuahua (near US border - western side) +# This includes the municipios of Janos, Ascensión, Juárez, Guadalupe, and +# Práxedis G Guerrero. +# http://gaceta.diputados.gob.mx/PDF/65/2a022/nov/20221124-VII.pdf +Zone America/Ciudad_Juarez -7:05:56 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 + -7:00 Mexico M%sT 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT 2010 + -7:00 US M%sT 2022 Oct 30 2:00 + -6:00 - CST 2022 Nov 30 0:00 -7:00 US M%sT +# Chihuahua (near US border - eastern side) +# This includes the municipios of Coyame del Sotol, Ojinaga, and Manuel +# Benavides. +# http://gaceta.diputados.gob.mx/PDF/65/2a022/nov/20221124-VII.pdf +Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u + -7:00 - MST 1927 Jun 10 23:00 + -6:00 - CST 1930 Nov 15 + -7:00 Mexico M%sT 1932 Apr 1 + -6:00 - CST 1996 + -6:00 Mexico C%sT 1998 + -6:00 - CST 1998 Apr Sun>=1 3:00 + -7:00 Mexico M%sT 2010 + -7:00 US M%sT 2022 Oct 30 2:00 + -6:00 - CST 2022 Nov 30 0:00 + -6:00 US C%sT # Chihuahua (away from US border) -Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 +Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 + -7:00 Mexico M%sT 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 - -7:00 Mexico M%sT + -7:00 Mexico M%sT 2022 Oct 30 2:00 + -6:00 - CST # Sonora -Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 +Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 + -7:00 Mexico M%sT 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST +# Baja California Sur, Nayarit (except Bahía de Banderas), Sinaloa +Zone America/Mazatlan -7:05:40 - LMT 1922 Jan 1 7:00u + -7:00 - MST 1927 Jun 10 23:00 + -6:00 - CST 1930 Nov 15 + -7:00 Mexico M%sT 1932 Apr 1 + -6:00 - CST 1942 Apr 24 + -7:00 - MST 1949 Jan 14 + -8:00 - PST 1970 + -7:00 Mexico M%sT + +# Bahía de Banderas + # From Alexander Krivenyshev (2010-04-21): # According to news, Bahía de Banderas (Mexican state of Nayarit) # changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to @@ -2739,25 +2711,10 @@ Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 # From Arthur David Olson (2010-05-01): # Use "Bahia_Banderas" to keep the name to fourteen characters. -# Mazatlán -Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 - -7:00 - MST 1927 Jun 10 23:00 - -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 - -6:00 - CST 1942 Apr 24 - -7:00 - MST 1949 Jan 14 - -8:00 - PST 1970 - -7:00 Mexico M%sT - -# Bahía de Banderas -Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00 +Zone America/Bahia_Banderas -7:01:00 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 - -7:00 - MST 1931 May 1 23:00 - -6:00 - CST 1931 Oct - -7:00 - MST 1932 Apr 1 + -7:00 Mexico M%sT 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 @@ -2765,7 +2722,7 @@ Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00 -6:00 Mexico C%sT # Baja California -Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 +Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 7:00u -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 @@ -2802,23 +2759,19 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 # It has been moved to the 'backward' file. # +# From Paul Eggert (2022-10-28): +# Today's new law states that the entire state of Baja California +# follows US DST rules, which agrees with simplifications noted above. +# # # Revillagigedo Is # no information ############################################################################### -# Anguilla -# Antigua and Barbuda -# See America/Puerto_Rico. - -# The Bahamas -# See America/Toronto. - - # Barbados -# For 1899 Milne gives -3:58:29.2; round that. +# For 1899 Milne gives -3:58:29.2. # From P Chan (2020-12-09 and 2020-12-11): # Standard time of GMT-4 was adopted in 1911. @@ -2862,6 +2815,7 @@ Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D Rule Barb 1979 only - Sep 30 2:00 0 S Rule Barb 1980 only - Sep 25 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -3:58:29.2 Zone America/Barbados -3:58:29 - LMT 1911 Aug 28 # Bridgetown -4:00 Barb A%sT 1944 -4:00 Barb AST/-0330 1945 @@ -2922,10 +2876,10 @@ Zone America/Belize -5:52:48 - LMT 1912 Apr 1 # Bermuda -# From Paul Eggert (2020-11-24): +# From Paul Eggert (2022-07-27): # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower, # Bermuda dockyard, Ireland I. This agrees with standard offset given in the -# Daylight Saving Act, 1917 cited below. Round that to the nearest second. +# Daylight Saving Act, 1917 cited below. # It is not known when this time became standard for Bermuda; guess 1890. # The transition to -04 was specified by: # 1930: The Time Zone Act, 1929 (1929: No. 39) [1929-11-08] @@ -3020,21 +2974,16 @@ Rule Bermuda 1956 only - May Sun>=22 2:00 1:00 D Rule Bermuda 1956 only - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -4:19:18.3 Zone Atlantic/Bermuda -4:19:18 - LMT 1890 # Hamilton -4:19:18 Bermuda BMT/BST 1930 Jan 1 2:00 -4:00 Bermuda A%sT 1974 Apr 28 2:00 -4:00 Canada A%sT 1976 -4:00 US A%sT -# Caribbean Netherlands -# See America/Puerto_Rico. - -# Cayman Is -# See America/Panama. - # Costa Rica -# Milne gives -5:36:13.3 as San José mean time; round to nearest. +# Milne gives -5:36:13.3 as San José mean time. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D @@ -3046,6 +2995,7 @@ Rule CR 1991 only - Jul 1 0:00 0 S Rule CR 1992 only - Mar 15 0:00 0 S # There are too many San Josés elsewhere, so we'll use 'Costa Rica'. # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -5:36:13.3 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time -6:00 CR C%sT @@ -3109,7 +3059,7 @@ Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José # # He supplied these references: # -# http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES +# http://www.prensalatina.com.mx/article.asp?ID={4CC32C1B-A9F7-42FB-8A07-8631AFC923AF}&language=ES # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm # # From Alex Krivenyshev (2007-10-25): @@ -3256,9 +3206,6 @@ Zone America/Havana -5:29:28 - LMT 1890 -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT -5:00 Cuba C%sT -# Dominica -# See America/Puerto_Rico. - # Dominican Republic # From Steffen Thorsen (2000-10-30): @@ -3305,12 +3252,6 @@ Rule Salv 1987 1988 - Sep lastSun 0:00 0 S Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador -6:00 Salv C%sT -# Grenada -# Guadeloupe -# St Barthélemy -# St Martin (French part) -# See America/Puerto_Rico. - # Guatemala # # From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen: @@ -3468,7 +3409,7 @@ Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr # Jamaica # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an # unspecified official document, and says "This time is used throughout the -# island". Go with Milne. Round to the nearest second as required by zic. +# island". Go with Milne. # # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but # Lance Neita writes that Prime Minister Michael Manley decreed it January 5. @@ -3481,6 +3422,7 @@ Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647 # # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -5:07:10.41 Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1974 @@ -3495,9 +3437,6 @@ Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France -4:00 1:00 ADT 1980 Sep 28 -4:00 - AST -# Montserrat -# See America/Puerto_Rico. - # Nicaragua # # This uses Shanks & Pottenger for times before 2005. @@ -3563,44 +3502,39 @@ Zone America/Managua -5:45:08 - LMT 1890 -5:00 - EST 1997 -6:00 Nic C%sT +# Cayman Is # Panama +# +# Atikokan and Coral Harbour, Canada, match Panama since 1970. # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Panama -5:18:08 - LMT 1890 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time -5:00 - EST -Link America/Panama America/Atikokan -Link America/Panama America/Cayman +# Anguilla +# Antigua & Barbuda +# Aruba +# Caribbean Netherlands +# Curaçao +# Dominica +# Grenada +# Guadeloupe +# Montserrat # Puerto Rico +# St Barthélemy +# St Kitts-Nevis +# Sint Maarten / St Martin +# St Lucia +# St Vincent & the Grenadines +# Trinidad & Tobago +# Virgin Is (UK & US) +# # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'. # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan -4:00 - AST 1942 May 3 -4:00 US A%sT 1946 -4:00 - AST -Link America/Puerto_Rico America/Anguilla -Link America/Puerto_Rico America/Antigua -Link America/Puerto_Rico America/Aruba -Link America/Puerto_Rico America/Curacao -Link America/Puerto_Rico America/Blanc-Sablon # Quebec (Lower North Shore) -Link America/Puerto_Rico America/Dominica -Link America/Puerto_Rico America/Grenada -Link America/Puerto_Rico America/Guadeloupe -Link America/Puerto_Rico America/Kralendijk # Caribbean Netherlands -Link America/Puerto_Rico America/Lower_Princes # Sint Maarten -Link America/Puerto_Rico America/Marigot # St Martin (French part) -Link America/Puerto_Rico America/Montserrat -Link America/Puerto_Rico America/Port_of_Spain # Trinidad & Tobago -Link America/Puerto_Rico America/St_Barthelemy # St Barthélemy -Link America/Puerto_Rico America/St_Kitts # St Kitts & Nevis -Link America/Puerto_Rico America/St_Lucia -Link America/Puerto_Rico America/St_Thomas # Virgin Islands (US) -Link America/Puerto_Rico America/St_Vincent -Link America/Puerto_Rico America/Tortola # Virgin Islands (UK) - -# St Kitts-Nevis -# St Lucia -# See America/Puerto_Rico. # St Pierre and Miquelon # There are too many St Pierres elsewhere, so we'll use 'Miquelon'. @@ -3610,12 +3544,6 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre -3:00 - -03 1987 -3:00 Canada -03/-02 -# St Vincent and the Grenadines -# See America/Puerto_Rico. - -# Sint Maarten -# See America/Puerto_Rico. - # Turks and Caicos # # From Chris Dunn in @@ -3678,17 +3606,13 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Grand_Turk -4:44:32 - LMT 1890 + #STDOFF -5:07:10.41 -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1979 -5:00 US E%sT 2015 Mar 8 2:00 -4:00 - AST 2018 Mar 11 3:00 -5:00 US E%sT -# British Virgin Is -# US Virgin Is -# See America/Puerto_Rico. - - # Local Variables: # coding: utf-8 # End: diff --git a/inst/tzdata/southamerica b/inst/tzdata/southamerica index c6249cd..e55c5f0 100644 --- a/inst/tzdata/southamerica +++ b/inst/tzdata/southamerica @@ -208,7 +208,7 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 - # Hora de verano para la República Argentina # http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html # says that standard time in Argentina from 1894-10-31 -# to 1920-05-01 was -4:16:48.25. Go with this more-precise value +# to 1920-05-01 was -4:16:48.25. Go with this more precise value # over Shanks & Pottenger. It is upward compatible with Milne, who # says Córdoba time was -4:16:48.2. @@ -400,6 +400,7 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 - # # Buenos Aires (BA), Capital Federal (CF), Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May # Córdoba Mean Time -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -417,6 +418,7 @@ Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 # - Santiago del Estero switched to -4:00 on 1991-04-01, # then to -3:00 on 1991-04-26. # + #STDOFF -4:16:48.25 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec @@ -429,6 +431,7 @@ Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 # # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -441,6 +444,7 @@ Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 # # Tucumán (TM) Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -454,6 +458,7 @@ Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 # # La Rioja (LR) Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -468,6 +473,7 @@ Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 # # San Juan (SJ) Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -482,6 +488,7 @@ Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 # # Jujuy (JY) Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -497,6 +504,7 @@ Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 # # Catamarca (CT), Chubut (CH) Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -511,6 +519,7 @@ Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 # # Mendoza (MZ) Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -533,6 +542,7 @@ Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 - Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -551,6 +561,7 @@ Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 # # Santa Cruz (SC) Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -563,6 +574,7 @@ Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 # # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -573,9 +585,6 @@ Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 -3:00 Arg -03/-02 2008 Oct 18 -3:00 - -03 -# Aruba -# See America/Puerto_Rico. - # Bolivia # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/La_Paz -4:32:36 - LMT 1890 @@ -645,7 +654,7 @@ Zone America/La_Paz -4:32:36 - LMT 1890 # From Rodrigo Severo (2004-10-04): # It's just the biannual change made necessary by the much hyped, supposedly -# modern Brazilian eletronic voting machines which, apparently, can't deal +# modern Brazilian ... voting machines which, apparently, can't deal # with a time change between the first and the second rounds of the elections. # From Steffen Thorsen (2007-09-20): @@ -1141,7 +1150,7 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # this is known to work for DST transitions starting in 2008 and # may well be true for earlier transitions. -# From Tim Parenti (2022-03-15): +# From Tim Parenti (2022-07-06): # For a brief period of roughly six weeks in 1946, DST was only observed on an # emergency basis in specific regions of central Chile; namely, "the national # territory between the provinces of Coquimbo and Concepción, inclusive". @@ -1159,7 +1168,14 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # Law Number 8,522, promulgated 1946-08-27, reunified Chilean clocks at their # new "Summer Time" of -04, reckoned as that of "the meridian of the # Astronomical Observatory of Lo Espejo, advanced by 42 minutes and 45 -# seconds". +# seconds". Although this law specified the new Summer Time to start on 1 +# September each year, a special "transitional article" started it a few days +# early, as soon as the law took effect. As the law was to take force "from +# the date of its publication in the 'Diario Oficial', which happened the +# following day, presume the change took place in Santiago and its environs +# from 24:00 -03 to 23:00 -04 on Wednesday 1946-08-28. Although this was a +# no-op for wall clocks in the north and south of the country, put their formal +# start to DST an hour later when they reached 24:00 -04. # https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19460828/#page/1 # After a brief "Winter Time" stint at -05 beginning 1947-04-01, Law Number # 8,777, promulgated 1947-05-17, established year-round -04 "from 23:00 on the @@ -1279,11 +1295,25 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. # From Juan Correa (2019-02-04): # http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf -# From Paul Eggert (2019-09-01): -# The above says the Magallanes exception expires 2022-04-02 at 24:00, -# so in theory, they will revert to -04/-03 after that. -# For now, assume that they will not revert, -# since they have extended the expiration date once already. + +# From Juan Correa (2022-04-02): +# I found there was a decree published last Thursday that will keep +# Magallanes region to UTC -3 "indefinitely". The decree is available at +# https://www.diariooficial.interior.gob.cl/publicaciones/2022/03/31/43217-B/01/2108910.pdf + +# From Juan Correa (2022-08-09): +# the Internal Affairs Ministry (Ministerio del Interior) informed DST +# for America/Santiago will start on midnight of September 11th; +# and will end on April 1st, 2023. Magallanes region (America/Punta_Arenas) +# will keep UTC -3 "indefinitely"... This is because on September 4th +# we will have a voting whether to approve a new Constitution. +# +# From Eduardo Romero Urra (2022-08-17): +# https://www.diariooficial.interior.gob.cl/publicaciones/2022/08/13/43327/01/2172567.pdf +# +# From Paul Eggert (2022-08-17): +# Although the presidential decree stops at fall 2026, assume that +# similar DST rules will continue thereafter. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 - @@ -1321,7 +1351,9 @@ Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 - Rule Chile 2016 2018 - May Sun>=9 3:00u 0 - Rule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 - Rule Chile 2019 max - Apr Sun>=2 3:00u 0 - -Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 - +Rule Chile 2019 2021 - Sep Sun>=2 4:00u 1:00 - +Rule Chile 2022 only - Sep Sun>=9 4:00u 1:00 - +Rule Chile 2023 max - Sep Sun>=2 4:00u 1:00 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -1334,9 +1366,9 @@ Zone America/Santiago -4:42:45 - LMT 1890 -5:00 Chile -05/-04 1932 Sep 1 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 - -4:00 - -04 1946 Jul 15 - -4:00 1:00 -03 1946 Sep 1 # central Chile - -4:00 - -04 1947 Apr 1 + -4:00 - -04 1946 Jul 14 24:00 + -4:00 1:00 -03 1946 Aug 28 24:00 # central CL + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 Zone America/Punta_Arenas -4:43:40 - LMT 1890 @@ -1348,7 +1380,8 @@ Zone America/Punta_Arenas -4:43:40 - LMT 1890 -5:00 Chile -05/-04 1932 Sep 1 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 - -4:00 - -04 1947 Apr 1 + -4:00 - -04 1946 Aug 28 24:00 + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 2016 Dec 4 -3:00 - -03 @@ -1382,28 +1415,25 @@ Zone Antarctica/Palmer 0 - -00 1965 # Colombia -# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, +# Milne gives 4:56:16.4 for Bogotá time in 1899. He writes, # "A variation of fifteen minutes in the public clocks of Bogota is not rare." +# From Alois Treindl (2022-11-10): +# End of time change in Colombia 1993 ... should be 6 February 24h ... +# DECRETO 267 DE 1993 +# https://www.suin-juriscol.gov.co/viewDocument.asp?ruta=Decretos/1061335 + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule CO 1992 only - May 3 0:00 1:00 - -Rule CO 1993 only - Apr 4 0:00 0 - +Rule CO 1992 only - May 3 0:00 1:00 - +Rule CO 1993 only - Feb 6 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -4:56:16.4 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time -5:00 CO -05/-04 # Malpelo, Providencia, San Andres # no information; probably like America/Bogota -# Curaçao -# See America/Puerto_Rico. -# -# From Arthur David Olson (2011-06-15): -# use links for places with new iso3166 codes. -# The name "Lower Prince's Quarter" is both longer than fourteen characters -# and contains an apostrophe; use "Lower_Princes".... -# From Paul Eggert (2021-09-29): -# These backward-compatibility links now are in the 'northamerica' file. # Ecuador # @@ -1719,9 +1749,6 @@ Zone America/Paramaribo -3:40:40 - LMT 1911 -3:30 - -0330 1984 Oct -3:00 - -03 -# Trinidad and Tobago -# See America/Puerto_Rico. - # Uruguay # From Paul Eggert (1993-11-18): # Uruguay wins the prize for the strangest peacetime manipulation of the rules. diff --git a/inst/tzdata/theory.html b/inst/tzdata/theory.html index 28cc88e..369c754 100644 --- a/inst/tzdata/theory.html +++ b/inst/tzdata/theory.html @@ -23,7 +23,7 @@

Outline

  • Interface stability
  • Leap seconds
  • Calendrical issues
    • -
  • Time and time zones on other planets
    • +
  • Time and time zones off earth
    • @@ -60,7 +60,6 @@

    Scope of the tz database

    American mountain time zone can choose from the timezones America/Denver which observes US-style daylight saving time (DST), -America/Mazatlan which observes Mexican-style DST, and America/Phoenix which does not observe DST. Applications that also deal with past timestamps in the mountain time zone can choose from over a dozen timezones, such as @@ -122,7 +121,7 @@

    Timezone identifiers

    locate the user on a timezone map or prioritize names that are geographically close. For an example selection interface, see the tzselect program in the tz code. -The Unicode Common Locale Data +The Unicode Common Locale Data Repository contains data that may be useful for other selection interfaces; it maps timezone names like Europe/Prague to locale-dependent strings like "Prague", "Praha", "Прага", and "布拉格". @@ -329,6 +328,7 @@

    Timezone identifiers

    These legacy names are mostly defined in the file 'etcetera'. Also, the file 'backward' defines the legacy names +'Etc/GMT0', 'Etc/GMT-0', 'Etc/GMT+0', 'GMT0', 'GMT-0' and 'GMT+0', and the file 'northamerica' defines the legacy names 'EST5EDT', 'CST6CDT', @@ -376,9 +376,11 @@

    Timezone identifiers

    on platforms that do not support POSIX-style TZ strings; no other source file other than backward contains links to its zones. -One of etcetera's names is GMT, +One of etcetera's names is Etc/UTC, used by functions like gmtime to obtain leap second information on platforms that support leap seconds. +Another etcetera name, GMT, +is used by older code releases.

    @@ -441,11 +443,11 @@

    Time zone abbreviations

    CAT/CAST Central Africa, CET/CEST/CEMT Central European, ChST Chamorro, - CST/CDT/CWT/CPT/CDDT Central [North America], + CST/CDT/CWT/CPT Central [North America], CST/CDT China, GMT/BST/IST/BDST Greenwich, EAT East Africa, - EST/EDT/EWT/EPT/EDDT Eastern [North America], + EST/EDT/EWT/EPT Eastern [North America], EET/EEST Eastern European, GST/GDT Guam, HST/HDT/HWT/HPT Hawaii, @@ -458,16 +460,17 @@

    Time zone abbreviations

    MET/MEST Middle European (a backward-compatibility alias for Central European), MSK/MSD Moscow, - MST/MDT/MWT/MPT/MDDT Mountain, + MST/MDT/MWT/MPT Mountain, NST/NDT/NWT/NPT/NDDT Newfoundland, NST/NDT/NWT/NPT Nome, NZMT/NZST New Zealand through 1945, NZST/NZDT New Zealand 1946–present, PKT/PKST Pakistan, - PST/PDT/PWT/PPT/PDDT Pacific, + PST/PDT/PWT/PPT Pacific, PST/PDT Philippine, SAST South Africa, SST Samoa, + UTC Universal, WAT/WAST West Africa, WET/WEST/WEMT Western European, WIB Waktu Indonesia Barat, @@ -491,7 +494,7 @@

    Time zone abbreviations

    These abbreviations are: AMT Asunción, Athens; - BMT Baghdad, Bangkok, Batavia, Bermuda, Bern, Bogotá, Bridgetown, + BMT Baghdad, Bangkok, Batavia, Bermuda, Bern, Bogotá, Brussels, Bucharest; CMT Calamarca, Caracas, Chisinau, Colón, Córdoba; DMT Dublin/Dunsink; @@ -502,13 +505,14 @@

    Time zone abbreviations

    HMT Havana, Helsinki, Horta, Howrah; IMT Irkutsk, Istanbul; JMT Jerusalem; - KMT Kaunas, Kiev, Kingston; - LMT Lima, Lisbon, local, Luanda; + KMT Kaunas, Kyiv, Kingston; + LMT Lima, Lisbon, local; MMT Macassar, Madras, Malé, Managua, Minsk, Monrovia, Montevideo, Moratuwa, Moscow; PLMT Phù Liễn; PMT Paramaribo, Paris, Perm, Pontianak, Prague; PMMT Port Moresby; + PPMT Port-au-Prince; QMT Quito; RMT Rangoon, Riga, Rome; SDMT Santo Domingo; @@ -516,8 +520,7 @@

    Time zone abbreviations

    SMT Santiago, Simferopol, Singapore, Stanley; TBMT Tbilisi; TMT Tallinn, Tehran; - WMT Warsaw; - ZMT Zomba.     + WMT Warsaw.

    @@ -568,7 +571,7 @@

    Time zone abbreviations

    locations while uninhabited. The leading '-' is a flag that the UT offset is in some sense undefined; this notation is derived - from Internet + from Internet RFC 3339. @@ -621,7 +624,7 @@

    Accuracy of the tz database

    should be observed. In her 2015 book The + href="https://www.hup.harvard.edu/catalog.php?isbn=9780674286146">The Global Transformation of Time, 1870–1950, Vanessa Ogle writes "Outside of Europe and North America there was no system of time @@ -720,8 +723,8 @@

    Accuracy of the tz database

    than what the tz code can handle. For example, from 1880 to 1916 clocks in Ireland observed Dublin Mean Time (estimated to be UT - −00:25:21.1), but the tz - code cannot represent the fractional second. + −00:25:21.1); although the tz + source data can represent the .1 second, TZif files and the code cannot. In practice these old specifications were rarely if ever implemented to subsecond precision. @@ -788,7 +791,7 @@

    Accuracy of the tz database

    with days starting at midnight. Although UT equals UTC for modern timestamps, UTC was not defined until 1960, so - commentary uses the more-general abbreviation UT for + commentary uses the more general abbreviation UT for timestamps that might predate 1960. Since UT, UT1, etc. disagree slightly, and since pre-1972 UTC seconds varied in length, @@ -807,7 +810,7 @@

    Accuracy of the tz database

    See: Stephenson FR, Morrison LV, Hohenkerk CY. Measurement of the Earth's rotation: 720 BC to AD 2015. - Proc Royal Soc A. 2016 Dec 7;472:20160404. + Proc Royal Soc A. 2016;472:20160404. Also see: Espenak F. Uncertainty in Delta T (ΔT). @@ -815,7 +818,8 @@

    Accuracy of the tz database

  • The relationship between POSIX time (that is, UTC but ignoring leap - seconds) and UTC is not agreed upon after 1972. + seconds) and UTC is not agreed upon. + This affects time stamps during the leap second era (1972–2035). Although the POSIX clock officially stops during an inserted leap second, at least one proposed standard has it jumping back a second instead; and in @@ -874,7 +878,7 @@

    POSIX properties and limitations

    is error-prone in practice. Also, POSIX TZ strings cannot deal with daylight saving time rules not based on the Gregorian calendar (as in - Iran), or with situations where more than two time zone + Morocco), or with situations where more than two time zone abbreviations or UT offsets are used in an area.

    @@ -910,8 +914,8 @@

    POSIX properties and limitations

    date[/time],date[/time]
    specifies the beginning and end of DST. If this is absent, the system supplies its own ruleset - for DST, and its rules can differ from year to year; - typically US DST rules are used. + for DST, typically current US + DST rules.
    time
    takes the form @@ -971,10 +975,11 @@

    POSIX properties and limitations

    Traditionally the current US DST rules were used to interpret such values, but this meant that the US DST rules were compiled into each - program that did time conversion. This meant that when + time conversion package, and when US time conversion rules changed (as in the United - States in 1987), all programs that did time conversion had to be - recompiled to ensure proper results. + States in 1987 and again in 2007), all packages that + interpreted TZ values had to be updated + to ensure proper results.
  • The TZ environment variable is process-global, which @@ -1033,7 +1038,7 @@

    Extensions to POSIX in the and numeric data as described above. The file's format is TZif, a timezone information format that contains binary data; see - Internet + Internet RFC 8536. The daylight saving time rules to be used for a particular timezone are encoded in the @@ -1061,11 +1066,12 @@

    Extensions to POSIX in the

  • The code supports platforms with a UT offset member - in struct tm, e.g., tm_gmtoff. -
    • -
  • - The code supports platforms with a time zone abbreviation member in - struct tm, e.g., tm_zone. + in struct tm, e.g., tm_gmtoff, + or with a time zone abbreviation member in + struct tm, e.g., tm_zone. As noted + in Austin + Group defect 1533, a future version of POSIX is planned to + require tm_gmtoff and tm_zone.
  • Functions tzalloc, tzfree, @@ -1126,7 +1132,8 @@

    POSIX features no longer needed

    APIs. Although it can still be used in arguments to mktime to disambiguate timestamps near - a DST transition when the clock jumps back, this + a DST transition when the clock jumps back on + platforms lacking tm_gmtoff, this disambiguation does not work when standard time itself jumps back, which can occur when a location changes to a time zone with a lesser UT offset. @@ -1168,7 +1175,7 @@

    Other portability notes

  • The functions that are conditionally compiled - if STD_INSPIRED is defined should, at this point, be + if STD_INSPIRED is nonzero should, at this point, be looked on primarily as food for thought. They are not in any sense "standard compatible" – some are not, in fact, specified in any standard. @@ -1235,7 +1242,7 @@

    Interface stability

    Interface changes in a release attempt to preserve compatibility with recent releases. For example, tz data files typically do not -rely on recently-added zic features, so that users can +rely on recently added zic features, so that users can run older zic versions to process newer data files. Downloading the tz database describes how releases @@ -1263,6 +1270,18 @@

    Interface stability

    Leap seconds

    +

    +Leap seconds were introduced in 1972 to accommodate the +difference between atomic time and the less regular rotation of the earth. +Unfortunately they caused so many problems with civil +timekeeping that they +are planned +to be discontinued by 2035, with some as-yet-undetermined +mechanism replacing them, perhaps after the year 2135. +Despite their impending obsolescence, a record of leap seconds is still +needed to resolve timestamps from 1972 through 2035. +

    +

    The tz code and data can account for leap seconds, thanks to code contributed by Bradley White. @@ -1274,15 +1293,15 @@

    Leap seconds

    Precision timekeeping, and this package by default installs a leapseconds file commonly used by -NTP +NTP software that adjusts the kernel clock. However, kernel-clock twiddling approximates UTC only roughly, -and systems needing more-precise UTC can use this package's leap +and systems needing more precise UTC can use this package's leap second support directly.

    -The directly-supported mechanism assumes that time_t +The directly supported mechanism assumes that time_t counts of seconds since the POSIX epoch normally include leap seconds, as opposed to POSIX time_t counts which exclude leap seconds. This modified timescale is converted to UTC @@ -1295,7 +1314,8 @@

    Leap seconds

    if no time zone correction is desired, calls to gmtime-like functions also need to consult a TZif file, -conventionally named GMT, +conventionally named Etc/UTC +(GMT in previous versions), to see whether leap second corrections are needed. To convert an application's time_t timestamps to or from POSIX time_t timestamps (for use when, say, @@ -1342,7 +1362,15 @@

    Calendrical issues

    -

    Time and time zones on other planets

    +

    Time and time zones off Earth

    +

    +The European Space Agency is considering +the establishment of a reference timescale for the Moon, which has +days roughly equivalent to 29.5 Earth days, and where relativistic +effects cause clocks to tick slightly faster than on Earth. +

    +

    Some people's work schedules have used Mars time. diff --git a/inst/tzdata/version b/inst/tzdata/version index ca002de..7daa77e 100644 --- a/inst/tzdata/version +++ b/inst/tzdata/version @@ -1 +1 @@ -2022a +2023c diff --git a/inst/tzdata/windowsZones.xml b/inst/tzdata/windowsZones.xml index 75b7dff..b49266e 100644 --- a/inst/tzdata/windowsZones.xml +++ b/inst/tzdata/windowsZones.xml @@ -70,13 +70,13 @@ For terms of use, see http://www.unicode.org/copyright.html - - + + - + @@ -98,7 +98,7 @@ For terms of use, see http://www.unicode.org/copyright.html - + @@ -108,7 +108,7 @@ For terms of use, see http://www.unicode.org/copyright.html - + diff --git a/inst/tzdata/ziguard.awk b/inst/tzdata/ziguard.awk index 2be6d52..7a3404f 100644 --- a/inst/tzdata/ziguard.awk +++ b/inst/tzdata/ziguard.awk @@ -9,7 +9,14 @@ # it does not do these nonessential tasks now. # # Although main and vanguard forms are currently equivalent, -# this need not always be the case. +# this need not always be the case. When the two forms differ, +# this script can convert either from main to vanguard form (needed then), +# or from vanguard to main form (this conversion would be needed later, +# after main became rearguard and vanguard became main). +# There is no need to convert rearguard to other forms. +# +# When converting to vanguard form, the output can use the line +# "Zone GMT 0 - GMT" which TZUpdater 2.3.2 mistakenly rejects. # # When converting to vanguard form, the output can use negative SAVE # values. @@ -19,26 +26,82 @@ # of the input data as best it can within the constraints of the # rearguard format. +# Given a FIELD like "-0:30", return a minute count like -30. +function get_minutes(field, \ + sign, hours, minutes) +{ + sign = field ~ /^-/ ? -1 : 1 + hours = +field + if (field ~ /:/) { + minutes = field + sub(/[^:]*:/, "", minutes) + } + return 60 * hours + sign * minutes +} + +# Given an OFFSET, which is a minute count like 300 or 330, +# return a %z-style abbreviation like "+05" or "+0530". +function offset_abbr(offset, \ + hours, minutes, sign) +{ + hours = int(offset / 60) + minutes = offset % 60 + if (minutes) { + return sprintf("%+.4d", hours * 100 + minutes); + } else { + return sprintf("%+.2d", hours) + } +} + +# Round TIMESTAMP (a +-hh:mm:ss.dddd string) to the nearest second. +function round_to_second(timestamp, \ + hh, mm, ss, seconds, dot_dddd, subseconds) +{ + dot_dddd = timestamp + if (!sub(/^[+-]?[0-9]+:[0-9]+:[0-9]+\./, ".", dot_dddd)) + return timestamp + hh = mm = ss = timestamp + sub(/^[-+]?[0-9]+:[0-9]+:/, "", ss) + sub(/^[-+]?[0-9]+:/, "", mm) + sub(/^[-+]?/, "", hh) + seconds = 3600 * hh + 60 * mm + ss + subseconds = +dot_dddd + seconds += 0.5 < subseconds || ((subseconds == 0.5) && (seconds % 2)); + return sprintf("%s%d:%.2d:%.2d", timestamp ~ /^-/ ? "-" : "", \ + seconds / 3600, seconds / 60 % 60, seconds % 60) +} + BEGIN { dataform_type["vanguard"] = 1 dataform_type["main"] = 1 dataform_type["rearguard"] = 1 + if (PACKRATLIST) { + while (getline =8 25:00" + # Prefer %z in vanguard form, explicit abbreviations otherwise. + if (DATAFORM == "vanguard") { + sub(/^(Zone[\t ]+[^\t ]+)?[\t ]+[^\t ]+[\t ]+[^\t ]+[\t ]+[-+][^\t ]+/, \ + "&CHANGE-TO-%z") + sub(/-00CHANGE-TO-%z/, "-00") + sub(/[-+][^\t ]+CHANGE-TO-/, "") + } else { + if ($0 ~ /^[^#]*%z/) { + stdoff_column = 2 * ($0 ~ /^Zone/) + 1 + rules_column = stdoff_column + 1 + stdoff = get_minutes($stdoff_column) + rules = $rules_column + stdabbr = offset_abbr(stdoff) + if (rules == "-") { + abbr = stdabbr + } else { + dstabbr_only = rules ~ /^[+0-9-]/ + if (dstabbr_only) { + dstoff = get_minutes(rules) + } else { + # The DST offset is normally an hour, but there are special cases. + if (rules == "Morocco" && NF == 3) { + dstoff = -60 + } else if (rules == "NBorneo") { + dstoff = 20 + } else if (((rules == "Cook" || rules == "LH") && NF == 3) \ + || (rules == "Uruguay" \ + && $0 ~ /[\t ](1942 Dec 14|1960|1970|1974 Dec 22)$/)) { + dstoff = 30 + } else if (rules == "Uruguay" && $0 ~ /[\t ]1974 Mar 10$/) { + dstoff = 90 + } else { + dstoff = 60 + } + } + dstabbr = offset_abbr(stdoff + dstoff) + if (dstabbr_only) { + abbr = dstabbr + } else { + abbr = stdabbr "/" dstabbr + } + } + sub(/%z/, abbr) + } + } + + # Normally, prefer whole seconds. However, prefer subseconds + # if generating vanguard form and the otherwise-undocumented + # VANGUARD_SUBSECONDS environment variable is set. + # This relies on #STDOFF comment lines in the data. + # It is for hypothetical clients that support UT offsets that are + # not integer multiples of one second (e.g., Europe/Lisbon, 1884 to 1912). + # No known clients need this currently, and this experimental + # feature may be changed or withdrawn in future releases. + if ($1 == "#STDOFF") { + stdoff = $2 + rounded_stdoff = round_to_second(stdoff) + if (DATAFORM == "vanguard" && ENVIRON["VANGUARD_SUBSECONDS"]) { + stdoff_subst[0] = rounded_stdoff + stdoff_subst[1] = stdoff + } else { + stdoff_subst[0] = stdoff + stdoff_subst[1] = rounded_stdoff + } + } else if (stdoff_subst[0]) { + stdoff_column = 2 * ($0 ~ /^Zone/) + 1 + stdoff_column_val = $stdoff_column + if (stdoff_column_val == stdoff_subst[0]) { + sub(stdoff_subst[0], stdoff_subst[1]) + } else if (stdoff_column_val != stdoff_subst[1]) { + stdoff_subst[0] = 0 + } + } + + # In rearguard form, change the Japan rule line with "Sat>=8 25:00" # to "Sun>=9 1:00", to cater to zic before 2007 and to older Java. - if (!vanguard && $1 == "Rule" && $7 == "Sat>=8" && $8 == "25:00") { - sub(/Sat>=8/, "Sun>=9") - sub(/25:00/, " 1:00") + if ($0 ~ /^Rule/ && $2 == "Japan") { + if (DATAFORM == "rearguard") { + if ($7 == "Sat>=8" && $8 == "25:00") { + sub(/Sat>=8/, "Sun>=9") + sub(/25:00/, " 1:00") + } + } else { + if ($7 == "Sun>=9" && $8 == "1:00") { + sub(/Sun>=9/, "Sat>=8") + sub(/ 1:00/, "25:00") + } + } } - # In rearguard format, change the Morocco lines with negative SAVE values + # In rearguard form, change the Morocco lines with negative SAVE values # to use positive SAVE values. - if (!vanguard && $1 == "Rule" && $2 == "Morocco" && $4 == 2018 \ - && $6 == "Oct") { - sub(/\t2018\t/, "\t2017\t") - } - if (!vanguard && $1 == "Rule" && $2 == "Morocco" && 2019 <= $3) { - if ($9 == "0") { - last_std_date = $3 " " $6 " " $7 " " $8 - sub(/\t0\t/, "\t1:00\t") - } else { - sub(/\t-1:00\t/, "\t0\t") + if ($2 == "Morocco") { + if ($0 ~ /^Rule/) { + if ($4 ~ /^201[78]$/ && $6 == "Oct") { + if (DATAFORM == "rearguard") { + sub(/\t2018\t/, "\t2017\t") + } else { + sub(/\t2017\t/, "\t2018\t") + } + } + + if (2019 <= $3) { + if ($8 == "2:00") { + if (DATAFORM == "rearguard") { + sub(/\t0\t/, "\t1:00\t") + } else { + sub(/\t1:00\t/, "\t0\t") + } + } else { + if (DATAFORM == "rearguard") { + sub(/\t-1:00\t/, "\t0\t") + } else { + sub(/\t0\t/, "\t-1:00\t") + } + } + } + } + if ($1 ~ /^[+0-9-]/ && NF == 3) { + if (DATAFORM == "rearguard") { + sub(/1:00\tMorocco/, "0:00\tMorocco") + sub(/\t\+01\/\+00$/, "\t+00/+01") + } else { + sub(/0:00\tMorocco/, "1:00\tMorocco") + sub(/\t\+00\/+01$/, "\t+01/+00") + } } } - if (!vanguard && $1 == "1:00" && $2 == "Morocco" && $3 == "+01/+00") { - # This introduces a transition from 01:59:59 +00 to 03:00:00 +01 - # with both times being standard (i.e., a change to standard UT offset). - # This is rearguard's way to approximate the actual prediction, - # which is that of an ordinary transition from DST to standard time. - sub(/1:00\tMorocco\t\+01\/\+00$/, - "0:00\tMorocco\t+00/+01\t" last_std_date "\n\t\t\t 1:00\t-\t+01") +} + +/^Zone/ { + packrat_ignored = FILENAME == PACKRATDATA && PACKRATLIST && !packratlist[$2]; +} +{ + if (packrat_ignored && $0 !~ /^Rule/) { + sub(/^/, "#") + } +} + +# Return a link line resulting by changing OLDLINE to link to TARGET +# from LINKNAME, instead of linking to OLDTARGET from LINKNAME. +# Align data columns the same as they were in OLDLINE. +# Also, replace any existing white space followed by comment with COMMENT. +function make_linkline(oldline, target, linkname, oldtarget, comment, \ + oldprefix, oldprefixlen, oldtargettabs, \ + replsuffix, targettabs) +{ + oldprefix = "Link\t" oldtarget "\t" + oldprefixlen = length(oldprefix) + if (substr(oldline, 1, oldprefixlen) == oldprefix) { + # Use tab stops to preserve LINKNAME's column. + replsuffix = substr(oldline, oldprefixlen + 1) + sub(/[\t ]*#.*/, "", replsuffix) + oldtargettabs = int(length(oldtarget) / 8) + 1 + targettabs = int(length(target) / 8) + 1 + for (; targettabs < oldtargettabs; targettabs++) { + replsuffix = "\t" replsuffix + } + for (; oldtargettabs < targettabs && replsuffix ~ /^\t/; targettabs--) { + replsuffix = substr(replsuffix, 2) + } + } else { + # Odd format line; don't bother lining up its replacement nicely. + replsuffix = linkname } + return "Link\t" target "\t" replsuffix comment +} + +/^Link/ && $4 == "#=" && DATAFORM == "vanguard" { + $0 = make_linkline($0, $5, $3, $2) } # If a Link line is followed by a Link or Zone line for the same data, comment @@ -129,11 +353,34 @@ DATAFORM != "main" { /^Link/ { sub(/^Link/, "#Link", line[linkline[$3]]) linkline[$3] = NR + linktarget[$3] = $2 } { line[NR] = $0 } +function cut_link_chains_short( \ + l, linkname, t, target) +{ + for (linkname in linktarget) { + target = linktarget[linkname] + t = linktarget[target] + if (t) { + # TARGET is itself a link name. Replace the line "Link TARGET LINKNAME" + # with "Link T LINKNAME #= TARGET", where T is at the end of the chain + # of links that LINKNAME points to. + while ((u = linktarget[t])) { + t = u + } + l = linkline[linkname] + line[l] = make_linkline(line[l], t, linkname, target, "\t#= " target) + } + } +} + END { + if (DATAFORM != "vanguard") { + cut_link_chains_short() + } for (i = 1; i <= NR; i++) print line[i] } diff --git a/inst/tzdata/zishrink.awk b/inst/tzdata/zishrink.awk index 1947c7c..66968e8 100644 --- a/inst/tzdata/zishrink.awk +++ b/inst/tzdata/zishrink.awk @@ -23,7 +23,7 @@ function record_hash(n, name) function gen_rule_name(name, \ n) { - # Use a simple memonic: the first two letters. + # Use a simple mnemonic: the first two letters. n = substr(name, 1, 2) record_hash(n, name) # printf "# %s = %s\n", n, name @@ -150,10 +150,19 @@ function prehash_rule_names( \ } } +function make_line(n, field, \ + f, r) +{ + r = field[1] + for (f = 2; f <= n; f++) + r = r " " field[f] + return r +} + # Process the input line LINE and save it for later output. function process_input_line(line, \ - field, end, i, n, startdef, \ + f, field, end, i, n, r, startdef, \ linkline, ruleline, zoneline) { # Remove comments, normalize spaces, and append a space to each line. @@ -218,12 +227,11 @@ function process_input_line(line, \ n = split(line, field) - # Abbreviate rule names. - i = zoneline ? 4 : linkline ? 0 : 2 - if (i && field[i] ~ /^[^-+0-9]/) { - if (!rule[field[i]]) - rule[field[i]] = gen_rule_name(field[i]) - field[i] = rule[field[i]] + # Record which rule names are used, and generate their abbreviations. + f = zoneline ? 4 : linkline || ruleline ? 0 : 2 + r = field[f] + if (r ~ /^[^-+0-9]/) { + rule_used[r] = 1 } # If this zone supersedes an earlier one, delete the earlier one @@ -246,10 +254,38 @@ function process_input_line(line, \ zonedef[zonename] = nout + 1 # Save the line for later output. - line = field[1] - for (i = 2; i <= n; i++) - line = line " " field[i] - output_line[nout++] = line + output_line[nout++] = make_line(n, field) +} + +function omit_unused_rules( \ + i, field) +{ + for (i = 0; i < nout; i++) { + split(output_line[i], field) + if (field[1] == "R" && !rule_used[field[2]]) { + output_line[i] = "" + } + } +} + +function abbreviate_rule_names( \ + abbr, f, field, i, n, r) +{ + for (i = 0; i < nout; i++) { + n = split(output_line[i], field) + if (n) { + f = field[1] == "Z" ? 4 : field[1] == "L" ? 0 : 2 + r = field[f] + if (r ~ /^[^-+0-9]/) { + abbr = rule[r] + if (!abbr) { + rule[r] = abbr = gen_rule_name(r) + } + field[f] = abbr + output_line[i] = make_line(n, field) + } + } + } } function output_saved_lines( \ @@ -314,5 +350,7 @@ BEGIN { } END { + omit_unused_rules() + abbreviate_rule_names() output_saved_lines() } diff --git a/inst/tzdata/zone.tab b/inst/tzdata/zone.tab index 086458f..dbcb617 100644 --- a/inst/tzdata/zone.tab +++ b/inst/tzdata/zone.tab @@ -114,23 +114,18 @@ CA +4606-06447 America/Moncton Atlantic - New Brunswick CA +5320-06025 America/Goose_Bay Atlantic - Labrador (most areas) CA +5125-05707 America/Blanc-Sablon AST - QC (Lower North Shore) CA +4339-07923 America/Toronto Eastern - ON, QC (most areas) -CA +4901-08816 America/Nipigon Eastern - ON, QC (no DST 1967-73) -CA +4823-08915 America/Thunder_Bay Eastern - ON (Thunder Bay) -CA +6344-06828 America/Iqaluit Eastern - NU (most east areas) -CA +6608-06544 America/Pangnirtung Eastern - NU (Pangnirtung) +CA +6344-06828 America/Iqaluit Eastern - NU (most areas) CA +484531-0913718 America/Atikokan EST - ON (Atikokan); NU (Coral H) CA +4953-09709 America/Winnipeg Central - ON (west); Manitoba -CA +4843-09434 America/Rainy_River Central - ON (Rainy R, Ft Frances) CA +744144-0944945 America/Resolute Central - NU (Resolute) CA +624900-0920459 America/Rankin_Inlet Central - NU (central) CA +5024-10439 America/Regina CST - SK (most areas) CA +5017-10750 America/Swift_Current CST - SK (midwest) -CA +5333-11328 America/Edmonton Mountain - AB; BC (E); SK (W) +CA +5333-11328 America/Edmonton Mountain - AB; BC (E); NT (E); SK (W) CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) -CA +6227-11421 America/Yellowknife Mountain - NT (central) CA +682059-1334300 America/Inuvik Mountain - NT (west) CA +4906-11631 America/Creston MST - BC (Creston) -CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) +CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) CA +6404-13925 America/Dawson MST - Yukon (west) @@ -143,7 +138,7 @@ CG -0416+01517 Africa/Brazzaville CH +4723+00832 Europe/Zurich CI +0519-00402 Africa/Abidjan CK -2114-15946 Pacific/Rarotonga -CL -3327-07040 America/Santiago Chile (most areas) +CL -3327-07040 America/Santiago most of Chile CL -5309-07055 America/Punta_Arenas Region of Magallanes CL -2709-10926 Pacific/Easter Easter Island CM +0403+00942 Africa/Douala @@ -155,10 +150,10 @@ CU +2308-08222 America/Havana CV +1455-02331 Atlantic/Cape_Verde CW +1211-06900 America/Curacao CX -1025+10543 Indian/Christmas -CY +3510+03322 Asia/Nicosia Cyprus (most areas) +CY +3510+03322 Asia/Nicosia most of Cyprus CY +3507+03357 Asia/Famagusta Northern Cyprus CZ +5005+01426 Europe/Prague -DE +5230+01322 Europe/Berlin Germany (most areas) +DE +5230+01322 Europe/Berlin most of Germany DE +4742+00841 Europe/Busingen Busingen DJ +1136+04309 Africa/Djibouti DK +5540+01235 Europe/Copenhagen @@ -191,7 +186,7 @@ GF +0456-05220 America/Cayenne GG +492717-0023210 Europe/Guernsey GH +0533-00013 Africa/Accra GI +3608-00521 Europe/Gibraltar -GL +6411-05144 America/Nuuk Greenland (most areas) +GL +6411-05144 America/Nuuk most of Greenland GL +7646-01840 America/Danmarkshavn National Park (east coast) GL +7029-02158 America/Scoresbysund Scoresbysund/Ittoqqortoormiit GL +7634-06847 America/Thule Thule/Pituffik @@ -239,7 +234,7 @@ KP +3901+12545 Asia/Pyongyang KR +3733+12658 Asia/Seoul KW +2920+04759 Asia/Kuwait KY +1918-08123 America/Cayman -KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) +KZ +4315+07657 Asia/Almaty most of Kazakhstan KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda KZ +5312+06337 Asia/Qostanay Qostanay/Kostanay/Kustanay KZ +5017+05710 Asia/Aqtobe Aqtobe/Aktobe @@ -263,12 +258,12 @@ MD +4700+02850 Europe/Chisinau ME +4226+01916 Europe/Podgorica MF +1804-06305 America/Marigot MG -1855+04731 Indian/Antananarivo -MH +0709+17112 Pacific/Majuro Marshall Islands (most areas) +MH +0709+17112 Pacific/Majuro most of Marshall Islands MH +0905+16720 Pacific/Kwajalein Kwajalein MK +4159+02126 Europe/Skopje ML +1239-00800 Africa/Bamako MM +1647+09610 Asia/Yangon -MN +4755+10653 Asia/Ulaanbaatar Mongolia (most areas) +MN +4755+10653 Asia/Ulaanbaatar most of Mongolia MN +4801+09139 Asia/Hovd Bayan-Olgiy, Govi-Altai, Hovd, Uvs, Zavkhan MN +4804+11430 Asia/Choibalsan Dornod, Sukhbaatar MO +221150+1133230 Asia/Macau @@ -280,17 +275,18 @@ MT +3554+01431 Europe/Malta MU -2010+05730 Indian/Mauritius MV +0410+07330 Indian/Maldives MW -1547+03500 Africa/Blantyre -MX +1924-09909 America/Mexico_City Central Time -MX +2105-08646 America/Cancun Eastern Standard Time - Quintana Roo -MX +2058-08937 America/Merida Central Time - Campeche, Yucatan -MX +2540-10019 America/Monterrey Central Time - Durango; Coahuila, Nuevo Leon, Tamaulipas (most areas) -MX +2550-09730 America/Matamoros Central Time US - Coahuila, Nuevo Leon, Tamaulipas (US border) -MX +2313-10625 America/Mazatlan Mountain Time - Baja California Sur, Nayarit, Sinaloa -MX +2838-10605 America/Chihuahua Mountain Time - Chihuahua (most areas) -MX +2934-10425 America/Ojinaga Mountain Time US - Chihuahua (US border) -MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora -MX +3232-11701 America/Tijuana Pacific Time US - Baja California -MX +2048-10515 America/Bahia_Banderas Central Time - Bahia de Banderas +MX +1924-09909 America/Mexico_City Central Mexico +MX +2105-08646 America/Cancun Quintana Roo +MX +2058-08937 America/Merida Campeche, Yucatan +MX +2540-10019 America/Monterrey Durango; Coahuila, Nuevo Leon, Tamaulipas (most areas) +MX +2550-09730 America/Matamoros Coahuila, Nuevo Leon, Tamaulipas (US border) +MX +2838-10605 America/Chihuahua Chihuahua (most areas) +MX +3144-10629 America/Ciudad_Juarez Chihuahua (US border - west) +MX +2934-10425 America/Ojinaga Chihuahua (US border - east) +MX +2313-10625 America/Mazatlan Baja California Sur, Nayarit (most areas), Sinaloa +MX +2048-10515 America/Bahia_Banderas Bahia de Banderas +MX +2904-11058 America/Hermosillo Sonora +MX +3232-11701 America/Tijuana Baja California MY +0310+10142 Asia/Kuala_Lumpur Malaysia (peninsula) MY +0133+11020 Asia/Kuching Sabah, Sarawak MZ -2558+03235 Africa/Maputo @@ -305,7 +301,7 @@ NO +5955+01045 Europe/Oslo NP +2743+08519 Asia/Kathmandu NR -0031+16655 Pacific/Nauru NU -1901-16955 Pacific/Niue -NZ -3652+17446 Pacific/Auckland New Zealand (most areas) +NZ -3652+17446 Pacific/Auckland most of New Zealand NZ -4357-17633 Pacific/Chatham Chatham Islands OM +2336+05835 Asia/Muscat PA +0858-07932 America/Panama @@ -313,7 +309,7 @@ PE -1203-07703 America/Lima PF -1732-14934 Pacific/Tahiti Society Islands PF -0900-13930 Pacific/Marquesas Marquesas Islands PF -2308-13457 Pacific/Gambier Gambier Islands -PG -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas) +PG -0930+14710 Pacific/Port_Moresby most of Papua New Guinea PG -0613+15534 Pacific/Bougainville Bougainville PH +1435+12100 Asia/Manila PK +2452+06703 Asia/Karachi @@ -359,7 +355,7 @@ RU +4310+13156 Asia/Vladivostok MSK+07 - Amur River RU +643337+1431336 Asia/Ust-Nera MSK+07 - Oymyakonsky RU +5934+15048 Asia/Magadan MSK+08 - Magadan RU +4658+14242 Asia/Sakhalin MSK+08 - Sakhalin Island -RU +6728+15343 Asia/Srednekolymsk MSK+08 - Sakha (E); North Kuril Is +RU +6728+15343 Asia/Srednekolymsk MSK+08 - Sakha (E); N Kuril Is RU +5301+15839 Asia/Kamchatka MSK+09 - Kamchatka RU +6445+17729 Asia/Anadyr MSK+09 - Bering Sea RW -0157+03004 Africa/Kigali @@ -400,9 +396,7 @@ TT +1039-06131 America/Port_of_Spain TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei TZ -0648+03917 Africa/Dar_es_Salaam -UA +5026+03031 Europe/Kiev Ukraine (most areas) -UA +4837+02218 Europe/Uzhgorod Transcarpathia -UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk +UA +5026+03031 Europe/Kyiv most of Ukraine UG +0019+03225 Africa/Kampala UM +2813-17722 Pacific/Midway Midway Islands UM +1917+16637 Pacific/Wake Wake Island @@ -425,7 +419,7 @@ US +465042-1012439 America/North_Dakota/New_Salem Central - ND (Morton rural) US +471551-1014640 America/North_Dakota/Beulah Central - ND (Mercer) US +394421-1045903 America/Denver Mountain (most areas) US +433649-1161209 America/Boise Mountain - ID (south); OR (east) -US +332654-1120424 America/Phoenix MST - Arizona (except Navajo) +US +332654-1120424 America/Phoenix MST - AZ (except Navajo) US +340308-1181434 America/Los_Angeles Pacific US +611305-1495401 America/Anchorage Alaska (most areas) US +581807-1342511 America/Juneau Alaska - Juneau area @@ -433,7 +427,7 @@ US +571035-1351807 America/Sitka Alaska - Sitka area US +550737-1313435 America/Metlakatla Alaska - Annette Island US +593249-1394338 America/Yakutat Alaska - Yakutat US +643004-1652423 America/Nome Alaska (west) -US +515248-1763929 America/Adak Aleutian Islands +US +515248-1763929 America/Adak Alaska - western Aleutians US +211825-1575130 Pacific/Honolulu Hawaii UY -345433-0561245 America/Montevideo UZ +3940+06648 Asia/Samarkand Uzbekistan (west) diff --git a/inst/tzdata/zone1970.tab b/inst/tzdata/zone1970.tab index c614be8..1f1cecb 100644 --- a/inst/tzdata/zone1970.tab +++ b/inst/tzdata/zone1970.tab @@ -18,7 +18,10 @@ # Please see the theory.html file for how these names are chosen. # If multiple timezones overlap a country, each has a row in the # table, with each column 1 containing the country code. -# 4. Comments; present if and only if a country has multiple timezones. +# 4. Comments; present if and only if countries have multiple timezones, +# and useful only for those countries. For example, the comments +# for the row with countries CH,DE,LI and name Europe/Zurich +# are useful only for DE, since CH and LI have no other timezones. # # If a timezone covers multiple countries, the most-populous city is used, # and that country is listed first in column 1; any other countries @@ -34,7 +37,7 @@ #country- #codes coordinates TZ comments AD +4230+00131 Europe/Andorra -AE,OM +2518+05518 Asia/Dubai +AE,OM,RE,SC,TF +2518+05518 Asia/Dubai Crozet, Scattered Is AF +3431+06912 Asia/Kabul AL +4120+01950 Europe/Tirane AM +4011+04430 Asia/Yerevan @@ -44,9 +47,8 @@ AQ -6736+06253 Antarctica/Mawson Mawson AQ -6448-06406 Antarctica/Palmer Palmer AQ -6734-06808 Antarctica/Rothera Rothera AQ -720041+0023206 Antarctica/Troll Troll -AQ -7824+10654 Antarctica/Vostok Vostok AR -3436-05827 America/Argentina/Buenos_Aires Buenos Aires (BA, CF) -AR -3124-06411 America/Argentina/Cordoba Argentina (most areas: CB, CC, CN, ER, FM, MN, SE, SF) +AR -3124-06411 America/Argentina/Cordoba most areas: CB, CC, CN, ER, FM, MN, SE, SF AR -2447-06525 America/Argentina/Salta Salta (SA, LP, NQ, RN) AR -2411-06518 America/Argentina/Jujuy Jujuy (JY) AR -2649-06513 America/Argentina/Tucuman Tucumán (TM) @@ -57,7 +59,7 @@ AR -3253-06849 America/Argentina/Mendoza Mendoza (MZ) AR -3319-06621 America/Argentina/San_Luis San Luis (SL) AR -5138-06913 America/Argentina/Rio_Gallegos Santa Cruz (SC) AR -5448-06818 America/Argentina/Ushuaia Tierra del Fuego (TF) -AS,UM -1416-17042 Pacific/Pago_Pago Samoa, Midway +AS,UM -1416-17042 Pacific/Pago_Pago Midway AT +4813+01620 Europe/Vienna AU -3133+15905 Australia/Lord_Howe Lord Howe Island AU -5430+15857 Antarctica/Macquarie Macquarie Island @@ -74,10 +76,9 @@ AU -3143+12852 Australia/Eucla Western Australia (Eucla) AZ +4023+04951 Asia/Baku BB +1306-05937 America/Barbados BD +2343+09025 Asia/Dhaka -BE +5050+00420 Europe/Brussels +BE,LU,NL +5050+00420 Europe/Brussels BG +4241+02319 Europe/Sofia BM +3217-06446 Atlantic/Bermuda -BN +0456+11455 Asia/Brunei BO -1630-06809 America/La_Paz BR -0351-03225 America/Noronha Atlantic islands BR -0127-04829 America/Belem Pará (east); Amapá @@ -103,45 +104,37 @@ CA +4439-06336 America/Halifax Atlantic - NS (most areas); PE CA +4612-05957 America/Glace_Bay Atlantic - NS (Cape Breton) CA +4606-06447 America/Moncton Atlantic - New Brunswick CA +5320-06025 America/Goose_Bay Atlantic - Labrador (most areas) -CA,BS +4339-07923 America/Toronto Eastern - ON, QC (most areas), Bahamas -CA +4901-08816 America/Nipigon Eastern - ON, QC (no DST 1967-73) -CA +4823-08915 America/Thunder_Bay Eastern - ON (Thunder Bay) -CA +6344-06828 America/Iqaluit Eastern - NU (most east areas) -CA +6608-06544 America/Pangnirtung Eastern - NU (Pangnirtung) +CA,BS +4339-07923 America/Toronto Eastern - ON, QC (most areas) +CA +6344-06828 America/Iqaluit Eastern - NU (most areas) CA +4953-09709 America/Winnipeg Central - ON (west); Manitoba -CA +4843-09434 America/Rainy_River Central - ON (Rainy R, Ft Frances) CA +744144-0944945 America/Resolute Central - NU (Resolute) CA +624900-0920459 America/Rankin_Inlet Central - NU (central) CA +5024-10439 America/Regina CST - SK (most areas) CA +5017-10750 America/Swift_Current CST - SK (midwest) -CA +5333-11328 America/Edmonton Mountain - AB; BC (E); SK (W) +CA +5333-11328 America/Edmonton Mountain - AB; BC (E); NT (E); SK (W) CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) -CA +6227-11421 America/Yellowknife Mountain - NT (central) CA +682059-1334300 America/Inuvik Mountain - NT (west) -CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) +CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) CA +6404-13925 America/Dawson MST - Yukon (west) CA +4916-12307 America/Vancouver Pacific - BC (most areas) -CC -1210+09655 Indian/Cocos -CH,DE,LI +4723+00832 Europe/Zurich Swiss time -CI,BF,GH,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan +CH,DE,LI +4723+00832 Europe/Zurich Büsingen +CI,BF,GH,GM,GN,IS,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan CK -2114-15946 Pacific/Rarotonga -CL -3327-07040 America/Santiago Chile (most areas) +CL -3327-07040 America/Santiago most of Chile CL -5309-07055 America/Punta_Arenas Region of Magallanes CL -2709-10926 Pacific/Easter Easter Island CN +3114+12128 Asia/Shanghai Beijing Time -CN +4348+08735 Asia/Urumqi Xinjiang Time +CN,AQ +4348+08735 Asia/Urumqi Xinjiang Time, Vostok CO +0436-07405 America/Bogota CR +0956-08405 America/Costa_Rica CU +2308-08222 America/Havana CV +1455-02331 Atlantic/Cape_Verde -CX -1025+10543 Indian/Christmas -CY +3510+03322 Asia/Nicosia Cyprus (most areas) +CY +3510+03322 Asia/Nicosia most of Cyprus CY +3507+03357 Asia/Famagusta Northern Cyprus CZ,SK +5005+01426 Europe/Prague -DE +5230+01322 Europe/Berlin Germany (most areas) -DK +5540+01235 Europe/Copenhagen +DE,DK,NO,SE,SJ +5230+01322 Europe/Berlin most of Germany DO +1828-06954 America/Santo_Domingo DZ +3647+00303 Africa/Algiers EC -0210-07950 America/Guayaquil Ecuador (mainland) @@ -155,16 +148,14 @@ ES +2806-01524 Atlantic/Canary Canary Islands FI,AX +6010+02458 Europe/Helsinki FJ -1808+17825 Pacific/Fiji FK -5142-05751 Atlantic/Stanley -FM +0725+15147 Pacific/Chuuk Chuuk/Truk, Yap -FM +0658+15813 Pacific/Pohnpei Pohnpei/Ponape FM +0519+16259 Pacific/Kosrae Kosrae FO +6201-00646 Atlantic/Faroe -FR +4852+00220 Europe/Paris +FR,MC +4852+00220 Europe/Paris GB,GG,IM,JE +513030-0000731 Europe/London GE +4143+04449 Asia/Tbilisi GF +0456-05220 America/Cayenne GI +3608-00521 Europe/Gibraltar -GL +6411-05144 America/Nuuk Greenland (most areas) +GL +6411-05144 America/Nuuk most of Greenland GL +7646-01840 America/Danmarkshavn National Park (east coast) GL +7029-02158 America/Scoresbysund Scoresbysund/Ittoqqortoormiit GL +7634-06847 America/Thule Thule/Pituffik @@ -188,19 +179,18 @@ IN +2232+08822 Asia/Kolkata IO -0720+07225 Indian/Chagos IQ +3321+04425 Asia/Baghdad IR +3540+05126 Asia/Tehran -IS +6409-02151 Atlantic/Reykjavik IT,SM,VA +4154+01229 Europe/Rome JM +175805-0764736 America/Jamaica JO +3157+03556 Asia/Amman JP +353916+1394441 Asia/Tokyo KE,DJ,ER,ET,KM,MG,SO,TZ,UG,YT -0117+03649 Africa/Nairobi KG +4254+07436 Asia/Bishkek -KI +0125+17300 Pacific/Tarawa Gilbert Islands +KI,MH,TV,UM,WF +0125+17300 Pacific/Tarawa Gilberts, Marshalls, Wake KI -0247-17143 Pacific/Kanton Phoenix Islands KI +0152-15720 Pacific/Kiritimati Line Islands KP +3901+12545 Asia/Pyongyang KR +3733+12658 Asia/Seoul -KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) +KZ +4315+07657 Asia/Almaty most of Kazakhstan KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda KZ +5312+06337 Asia/Qostanay Qostanay/Kostanay/Kustanay KZ +5017+05710 Asia/Aqtobe Aqtöbe/Aktobe @@ -211,55 +201,50 @@ LB +3353+03530 Asia/Beirut LK +0656+07951 Asia/Colombo LR +0618-01047 Africa/Monrovia LT +5441+02519 Europe/Vilnius -LU +4936+00609 Europe/Luxembourg LV +5657+02406 Europe/Riga LY +3254+01311 Africa/Tripoli MA +3339-00735 Africa/Casablanca -MC +4342+00723 Europe/Monaco MD +4700+02850 Europe/Chisinau -MH +0709+17112 Pacific/Majuro Marshall Islands (most areas) MH +0905+16720 Pacific/Kwajalein Kwajalein -MM +1647+09610 Asia/Yangon -MN +4755+10653 Asia/Ulaanbaatar Mongolia (most areas) +MM,CC +1647+09610 Asia/Yangon +MN +4755+10653 Asia/Ulaanbaatar most of Mongolia MN +4801+09139 Asia/Hovd Bayan-Ölgii, Govi-Altai, Hovd, Uvs, Zavkhan MN +4804+11430 Asia/Choibalsan Dornod, Sükhbaatar MO +221150+1133230 Asia/Macau MQ +1436-06105 America/Martinique MT +3554+01431 Europe/Malta MU -2010+05730 Indian/Mauritius -MV +0410+07330 Indian/Maldives -MX +1924-09909 America/Mexico_City Central Time -MX +2105-08646 America/Cancun Eastern Standard Time - Quintana Roo -MX +2058-08937 America/Merida Central Time - Campeche, Yucatán -MX +2540-10019 America/Monterrey Central Time - Durango; Coahuila, Nuevo León, Tamaulipas (most areas) -MX +2550-09730 America/Matamoros Central Time US - Coahuila, Nuevo León, Tamaulipas (US border) -MX +2313-10625 America/Mazatlan Mountain Time - Baja California Sur, Nayarit, Sinaloa -MX +2838-10605 America/Chihuahua Mountain Time - Chihuahua (most areas) -MX +2934-10425 America/Ojinaga Mountain Time US - Chihuahua (US border) -MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora -MX +3232-11701 America/Tijuana Pacific Time US - Baja California -MX +2048-10515 America/Bahia_Banderas Central Time - Bahía de Banderas -MY +0310+10142 Asia/Kuala_Lumpur Malaysia (peninsula) -MY +0133+11020 Asia/Kuching Sabah, Sarawak +MV,TF +0410+07330 Indian/Maldives Kerguelen, St Paul I, Amsterdam I +MX +1924-09909 America/Mexico_City Central Mexico +MX +2105-08646 America/Cancun Quintana Roo +MX +2058-08937 America/Merida Campeche, Yucatán +MX +2540-10019 America/Monterrey Durango; Coahuila, Nuevo León, Tamaulipas (most areas) +MX +2550-09730 America/Matamoros Coahuila, Nuevo León, Tamaulipas (US border) +MX +2838-10605 America/Chihuahua Chihuahua (most areas) +MX +3144-10629 America/Ciudad_Juarez Chihuahua (US border - west) +MX +2934-10425 America/Ojinaga Chihuahua (US border - east) +MX +2313-10625 America/Mazatlan Baja California Sur, Nayarit (most areas), Sinaloa +MX +2048-10515 America/Bahia_Banderas Bahía de Banderas +MX +2904-11058 America/Hermosillo Sonora +MX +3232-11701 America/Tijuana Baja California +MY,BN +0133+11020 Asia/Kuching Sabah, Sarawak MZ,BI,BW,CD,MW,RW,ZM,ZW -2558+03235 Africa/Maputo Central Africa Time NA -2234+01706 Africa/Windhoek NC -2216+16627 Pacific/Noumea NF -2903+16758 Pacific/Norfolk NG,AO,BJ,CD,CF,CG,CM,GA,GQ,NE +0627+00324 Africa/Lagos West Africa Time NI +1209-08617 America/Managua -NL +5222+00454 Europe/Amsterdam -NO,SJ +5955+01045 Europe/Oslo NP +2743+08519 Asia/Kathmandu NR -0031+16655 Pacific/Nauru NU -1901-16955 Pacific/Niue NZ,AQ -3652+17446 Pacific/Auckland New Zealand time NZ -4357-17633 Pacific/Chatham Chatham Islands -PA,CA,KY +0858-07932 America/Panama EST - Panama, Cayman, ON (Atikokan), NU (Coral H) +PA,CA,KY +0858-07932 America/Panama EST - ON (Atikokan), NU (Coral H) PE -1203-07703 America/Lima PF -1732-14934 Pacific/Tahiti Society Islands PF -0900-13930 Pacific/Marquesas Marquesas Islands PF -2308-13457 Pacific/Gambier Gambier Islands -PG,AQ -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas), Dumont d'Urville +PG,AQ,FM -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas), Chuuk, Yap, Dumont d'Urville PG -0613+15534 Pacific/Bougainville Bougainville PH +1435+12100 Asia/Manila PK +2452+06703 Asia/Karachi @@ -275,7 +260,6 @@ PT +3744-02540 Atlantic/Azores Azores PW +0720+13429 Pacific/Palau PY -2516-05740 America/Asuncion QA,BH +2517+05132 Asia/Qatar -RE,TF -2052+05528 Indian/Reunion Réunion, Crozet, Scattered Islands RO +4426+02606 Europe/Bucharest RS,BA,HR,ME,MK,SI +4450+02030 Europe/Belgrade RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad @@ -303,15 +287,13 @@ RU +4310+13156 Asia/Vladivostok MSK+07 - Amur River RU +643337+1431336 Asia/Ust-Nera MSK+07 - Oymyakonsky RU +5934+15048 Asia/Magadan MSK+08 - Magadan RU +4658+14242 Asia/Sakhalin MSK+08 - Sakhalin Island -RU +6728+15343 Asia/Srednekolymsk MSK+08 - Sakha (E); North Kuril Is +RU +6728+15343 Asia/Srednekolymsk MSK+08 - Sakha (E); N Kuril Is RU +5301+15839 Asia/Kamchatka MSK+09 - Kamchatka RU +6445+17729 Asia/Anadyr MSK+09 - Bering Sea -SA,AQ,KW,YE +2438+04643 Asia/Riyadh Arabia, Syowa -SB -0932+16012 Pacific/Guadalcanal -SC -0440+05528 Indian/Mahe +SA,AQ,KW,YE +2438+04643 Asia/Riyadh Syowa +SB,FM -0932+16012 Pacific/Guadalcanal Pohnpei SD +1536+03232 Africa/Khartoum -SE +5920+01803 Europe/Stockholm -SG,MY +0117+10351 Asia/Singapore Singapore, peninsular Malaysia +SG,MY +0117+10351 Asia/Singapore peninsular Malaysia SR +0550-05510 America/Paramaribo SS +0451+03137 Africa/Juba ST +0020+00644 Africa/Sao_Tome @@ -319,8 +301,7 @@ SV +1342-08912 America/El_Salvador SY +3330+03618 Asia/Damascus TC +2128-07108 America/Grand_Turk TD +1207+01503 Africa/Ndjamena -TF -492110+0701303 Indian/Kerguelen Kerguelen, St Paul Island, Amsterdam Island -TH,KH,LA,VN +1345+10031 Asia/Bangkok Indochina (most areas) +TH,CX,KH,LA,VN +1345+10031 Asia/Bangkok north Vietnam TJ +3835+06848 Asia/Dushanbe TK -0922-17114 Pacific/Fakaofo TL -0833+12535 Asia/Dili @@ -328,12 +309,8 @@ TM +3757+05823 Asia/Ashgabat TN +3648+01011 Africa/Tunis TO -210800-1751200 Pacific/Tongatapu TR +4101+02858 Europe/Istanbul -TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei -UA +5026+03031 Europe/Kiev Ukraine (most areas) -UA +4837+02218 Europe/Uzhgorod Transcarpathia -UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk -UM +1917+16637 Pacific/Wake Wake Island +UA +5026+03031 Europe/Kyiv most of Ukraine US +404251-0740023 America/New_York Eastern (most areas) US +421953-0830245 America/Detroit Eastern - MI (most areas) US +381515-0854534 America/Kentucky/Louisville Eastern - KY (Louisville area) @@ -353,7 +330,7 @@ US +465042-1012439 America/North_Dakota/New_Salem Central - ND (Morton rural) US +471551-1014640 America/North_Dakota/Beulah Central - ND (Mercer) US +394421-1045903 America/Denver Mountain (most areas) US +433649-1161209 America/Boise Mountain - ID (south); OR (east) -US,CA +332654-1120424 America/Phoenix MST - Arizona (except Navajo), Creston BC +US,CA +332654-1120424 America/Phoenix MST - AZ (most areas), Creston BC US +340308-1181434 America/Los_Angeles Pacific US +611305-1495401 America/Anchorage Alaska (most areas) US +581807-1342511 America/Juneau Alaska - Juneau area @@ -361,14 +338,37 @@ US +571035-1351807 America/Sitka Alaska - Sitka area US +550737-1313435 America/Metlakatla Alaska - Annette Island US +593249-1394338 America/Yakutat Alaska - Yakutat US +643004-1652423 America/Nome Alaska (west) -US +515248-1763929 America/Adak Aleutian Islands -US,UM +211825-1575130 Pacific/Honolulu Hawaii +US +515248-1763929 America/Adak Alaska - western Aleutians +US +211825-1575130 Pacific/Honolulu Hawaii UY -345433-0561245 America/Montevideo UZ +3940+06648 Asia/Samarkand Uzbekistan (west) UZ +4120+06918 Asia/Tashkent Uzbekistan (east) VE +1030-06656 America/Caracas -VN +1045+10640 Asia/Ho_Chi_Minh Vietnam (south) +VN +1045+10640 Asia/Ho_Chi_Minh south Vietnam VU -1740+16825 Pacific/Efate -WF -1318-17610 Pacific/Wallis WS -1350-17144 Pacific/Apia ZA,LS,SZ -2615+02800 Africa/Johannesburg +# +# The next section contains experimental tab-separated comments for +# use by user agents like tzselect that identify continents and oceans. +# +# For example, the comment "#@AQAntarctica/" means the country code +# AQ is in the continent Antarctica regardless of the Zone name, +# so Pacific/Auckland should be listed under Antarctica as well as +# under the Pacific because its line's country codes include AQ. +# +# If more than one country code is affected each is listed separated +# by commas, e.g., #@IS,SHAtlantic/". If a country code is in +# more than one continent or ocean, each is listed separated by +# commas, e.g., the second column of "#@CY,TRAsia/,Europe/". +# +# These experimental comments are present only for country codes where +# the continent or ocean is not already obvious from the Zone name. +# For example, there is no such comment for RU since it already +# corresponds to Zone names starting with both "Europe/" and "Asia/". +# +#@AQ Antarctica/ +#@IS,SH Atlantic/ +#@CY,TR Asia/,Europe/ +#@SJ Arctic/ +#@CC,CX,KM,MG,YT Indian/ diff --git a/tests/testthat/test-names.R b/tests/testthat/test-names.R index 6c522fb..e816b47 100644 --- a/tests/testthat/test-names.R +++ b/tests/testthat/test-names.R @@ -1,4 +1,4 @@ test_that("can get database names with known length", { names <- tzdb_names() - expect_length(names, 594) + expect_length(names, 596) }) diff --git a/tests/testthat/test-path.R b/tests/testthat/test-path.R index 76b20b3..ccfc011 100644 --- a/tests/testthat/test-path.R +++ b/tests/testthat/test-path.R @@ -65,5 +65,5 @@ test_that("version has been reverted back to the original after running the abov skip_on_cran() skip_if(tzdb_use_os_tzdb_cpp()) - expect_identical(tzdb_version(), "2022a") + expect_identical(tzdb_version(), "2023c") }) diff --git a/tests/testthat/test-version.R b/tests/testthat/test-version.R index ae259db..76f4017 100644 --- a/tests/testthat/test-version.R +++ b/tests/testthat/test-version.R @@ -1,3 +1,3 @@ test_that("version is correct", { - expect_identical(tzdb_version(), "2022a") + expect_identical(tzdb_version(), "2023c") }) diff --git a/tools/update-zone-data.R b/tools/update-zone-data.R index 3b23928..9de599c 100644 --- a/tools/update-zone-data.R +++ b/tools/update-zone-data.R @@ -23,7 +23,7 @@ library(fs) # the `version`, but that is typically fine. # Update the version! -version <- "2022a" +version <- "2023c" # ------------------------------------------------------------------------------ # Download the time zone database