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Squashed 'tz/' changes from 19e2701f4..6bebef3d6
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388b0a551 Release 2018i
1e3dc59ac Cite Shanks & Pottenger better
379f7ba9b São Tomé and Príncipe switch is at 02:00
a2ddd4a07 São Tomé and Príncipe moves back to UTC next month
7db91b70a Release 2018h
da0de21ea Validate HTML5 pages, too
e106585c4 * tz-art.html: Add a few IMDb URLs and standardize format.
6fb0daf8a Qyzylorda switched time zones
14ee38992 Update links to other websites
18755931c Metlakatla goes back to Alaska time next year
85ba8e31f Fix va_end typo in pre-C99 compatibility code
d053d36c4 * NEWS, asia: Improve Iranian DST comments.
1c35d6d1d * northamerica: Herbert Copeland stops time.
87a3c2f0a * theory.html: Mention GDT.  (Thanks to Michael Deckers.)
4fc79eab8 Fix Kwajalein comment
81d167e88 Extend Iranian exact dates to 2090
ebb968d07 Adjust Nauru transition dates in 1942, 1945, 1979
e972ffad0 Updates for Guam DST, Japanese in Pacific
892be6ecb * asia: Fix transcription typo.
dfb5b6793 Reinstall the 1904-10-30 Hong Kong change
c6b83759b Revert recent change to 1904 HK transition
7059b370a South Korea 1950s fallback at 24:00 previous day
c1e37a899 * asia: Fix typo.  (Thanks to Phake Nick.)
eea490a7f Hong Kong fixes for 1904 through 1952
c462ef269 * tz-link.html: Mention Time4A.
9a58ef8d7 * leapseconds.awk: Clarify the 1 Jan 1972 line.
a665f1572 Metlakatla switched to PST last weekend
f0d275962 * asia: Improve citation to Antar 1965.
45560fa65 Bring back attribute_pure for getzname
dffb83c98 * NEWS: Fix credit typo.
93cdbb6ce zic: pacify gcc 8.2.1
6c9af485e Avoid unnecessary calls to ‘access’
8539a448e Bring back 2019-2037 Morocco Ramadan predictions
1e01ec066 Fix appended dummy transition in non-POSIX zones
e84198fa7 Fix Volgograd label in zone1970.tab
ddc67c5c9 Correct tm_dst during Morocco transition

git-subtree-dir: tz
git-subtree-split: 6bebef3d60ef23e300a792d08c58791bf0430e4b
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Stuart Bishop committed Jan 7, 2019
1 parent 7e33478 commit 0c962b4
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22 changes: 16 additions & 6 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -380,15 +380,18 @@ AWK= awk
# is typically nicer if it works.
KSHELL= /bin/bash

# Name of curl <https://curl.haxx.se/>, used for HTML validation.
CURL= curl

# The path where SGML DTDs are kept and the catalog file(s) to use when
# validating. The default should work on both Debian and Red Hat.
# validating HTML 4.01. The default should work on both Debian and Red Hat.
SGML_TOPDIR= /usr
SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd
SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224
SGML_CATALOG_FILES= \
$(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat:$(SGML_TOPDIR)/share/sgml/html/4.01/HTML4.cat

# The name, arguments and environment of a program to validate your web pages.
# The name, arguments and environment of a program to validate HTML 4.01.
# See <http://openjade.sourceforge.net/doc/> for a validator, and
# <https://validator.w3.org/source/> for a validation library.
# Set VALIDATE=':' if you do not have such a program.
Expand Down Expand Up @@ -488,6 +491,7 @@ MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \
COMMON= calendars CONTRIBUTING LICENSE Makefile \
NEWS README theory.html version
WEB_PAGES= tz-art.html tz-how-to.html tz-link.html
CHECK_WEB_PAGES=check_tz-art.html check_tz-how-to.html check_tz-link.html
DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
PRIMARY_YDATA= africa antarctica asia australasia \
europe northamerica southamerica
Expand Down Expand Up @@ -799,9 +803,15 @@ check_tzs: $(TZS) $(TZS_NEW)
fi
touch $@
# This checks only the HTML 4.01 strict page.
# To check the the other pages, use <https://validator.w3.org/>.
check_web: tz-how-to.html
check_web: $(CHECK_WEB_PAGES)
check_tz-art.html: tz-art.html
check_tz-link.html: tz-link.html
check_tz-art.html check_tz-link.html:
$(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \
-F file=@$$(expr $@ : 'check_\(.*\)') -o $@.out && \
test ! -s $@.out || { cat $@.out; exit 1; }
mv $@.out $@
check_tz-how-to.html: tz-how-to.html
$(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html
touch $@
Expand Down Expand Up @@ -1068,7 +1078,7 @@ zic.o: private.h tzfile.h version.h
.PHONY: ALL INSTALL all
.PHONY: check check_time_t_alternatives
.PHONY: check_zishrink
.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
Expand Down
97 changes: 93 additions & 4 deletions NEWS
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@@ -1,14 +1,103 @@
News for the tz database

Release 2018i - 2018-12-30 11:05:43 -0800

Briefly:
São Tomé and Príncipe switches from +01 to +00 on 2019-01-01.

Changes to future timestamps

Due to a change in government, São Tomé and Príncipe switches back
from +01 to +00 on 2019-01-01 at 02:00. (Thanks to Vadim
Nasardinov and Michael Deckers.)


Release 2018h - 2018-12-23 17:59:32 -0800

Briefly:
Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21.
New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move.
Metlakatla, Alaska observes PST this winter only.
Guess Morocco will continue to adjust clocks around Ramadan.
Add predictions for Iran from 2038 through 2090.

Changes to future timestamps

Guess that Morocco will continue to fall back just before and
spring forward just after Ramadan, the practice since 2012.
(Thanks to Maamar Abdelkader.) This means Morocco will observe
negative DST during Ramadan in main and vanguard formats, and in
rearguard format it stays in the +00 timezone and observes
ordinary DST in all months other than Ramadan. As before, extend
this guesswork to the year 2037. As a consequence, Morocco is
scheduled to observe three DST transitions in some Gregorian years
(e.g., 2033) due to the mismatch between the Gregorian and Islamic
calendars.

The table of exact transitions for Iranian DST has been extended.
It formerly cut off before the year 2038 in a nod to 32-bit time_t.
It now cuts off before 2091 as there is doubt about how the Persian
calendar will treat 2091. This change predicts DST transitions in
2038-9, 2042-3, and 2046-7 to occur one day later than previously
predicted. As before, post-cutoff transitions are approximated.

Changes to past and future timestamps

Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.

Metlakatla moved from Alaska to Pacific standard time on 2018-11-04.
It did not change clocks that day and remains on -08 this winter.
(Thanks to Ryan Stanley.) It will revert to the usual Alaska
rules next spring, so this change affects only timestamps
from 2018-11-04 through 2019-03-10.

Change to past timestamps

Kwajalein's 1993-08-20 transition from -12 to +12 was at 24:00,
not 00:00. I transcribed the time incorrectly from Shanks.
(Thanks to Phake Nick.)

Nauru's 1979 transition was on 02-10 at 02:00, not 05-01 at 00:00.
(Thanks to Phake Nick.)

Guam observed DST irregularly from 1959 through 1977.
(Thanks to Phake Nick.)

Hong Kong observed DST in 1941 starting 06-15 (not 04-01), then on
10-01 changed standard time to +08:30 (not +08). Its transition
back to +08 after WWII was on 1945-09-15, not the previous day.
Its 1904-10-30 change took effect at 01:00 +08 (not 00:00 LMT).
(Thanks to Phake Nick, Steve Allen, and Joseph Myers.) Also,
its 1952 fallback was on 11-02 (not 10-25).

This release contains many changes to timestamps before 1946 due
to Japanese possession or occupation of Pacific/Chuuk,
Pacific/Guam, Pacific/Kosrae, Pacific/Kwajalein, Pacific/Majuro,
Pacific/Nauru, Pacific/Palau, and Pacific/Pohnpei.
(Thanks to Phake Nick.)

Assume that the Spanish East Indies was like the Philippines and
observed American time until the end of 1844. This affects
Pacific/Chuuk, Pacific/Kosrae, Pacific/Palau, and Pacific/Pohnpei.

Changes to past tm_isdst flags

For the recent Morocco change, the tm_isdst flag should be 1 from
2018-10-27 00:00 to 2018-10-28 03:00. (Thanks to Michael Deckers.)
Give a URL to the official decree. (Thanks to Matt Johnson.)


Release 2018g - 2018-10-26 22:22:45 -0700

Briefly:
Morocco switches to permanent +01 on 2018-10-27.
Morocco switches to permanent +01 on 2018-10-28.

Changes to future timestamps

Morocco switches from +00/+01 to permanent +01 effective 2018-10-27,
so its clocks will not fall back on 2018-10-28 as previously scheduled.
Morocco switches from +00/+01 to permanent +01 effective 2018-10-28,
so its clocks will not fall back as previously scheduled.
(Thanks to Mohamed Essedik Najd and Brian Inglis.)

Changes to code
Expand Down Expand Up @@ -119,7 +208,7 @@ Release 2018f - 2018-10-18 00:14:18 -0700
localtime.c no longer ignores TZif POSIX-style TZ strings that
specify only standard time. Instead, these TZ strings now
override the default time type for timestamps after the last
transition (or for all time stamps if there are no transitions),
transition (or for all timestamps if there are no transitions),
just as DST strings specifying DST have always done.

leapseconds.awk now outputs "#updated" and "#expires" comments,
Expand Down
97 changes: 90 additions & 7 deletions africa
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Original file line number Diff line number Diff line change
Expand Up @@ -847,8 +847,41 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
# From Mohamed Essedik Najd (2018-10-26):
# Today, a Moroccan government council approved the perpetual addition
# of 60 minutes to the regular Moroccan timezone.
# From Brian Inglis (2018-10-26):
# http://www.maroc.ma/fr/actualites/le-conseil-de-gouvernement-adopte-un-projet-de-decret-relatif-lheure-legale-stipulant-le
# From Matt Johnson (2018-10-28):
# http://www.sgg.gov.ma/Portals/1/BO/2018/BO_6720-bis_Ar.pdf
#
# From Maamar Abdelkader (2018-11-01):
# We usually move clocks back the previous week end and come back to the +1
# the week end after.... The government does not announce yet the decision
# about this temporary change. But it s 99% sure that it will be the case,
# as in previous years. An unofficial survey was done these days, showing
# that 64% of asked peopke are ok for moving from +1 to +0 during Ramadan.
# https://leconomiste.com/article/1035870-enquete-l-economiste-sunergia-64-des-marocains-plebiscitent-le-gmt-pendant-ramadan
#
# From Paul Eggert (2018-11-01):
# For now, guess that Morocco will fall back at 03:00 the last Sunday
# before Ramadan, and spring forward at 02:00 the first Sunday after
# Ramadan, as this has been the practice since 2012. To implement this,
# transition dates for 2019 through 2037 were determined by running the
# following program under GNU Emacs 26.1.
# (let ((islamic-year 1440))
# (require 'cal-islam)
# (while (< islamic-year 1460)
# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year)))
# (b (calendar-islamic-to-absolute (list 10 1 islamic-year)))
# (sunday 0))
# (while (/= sunday (mod (setq a (1- a)) 7)))
# (while (/= sunday (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\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t-1:00\t-\n"
# "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t0\t-\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 TYPE IN ON AT SAVE LETTER/S
Rule Morocco 1939 only - Sep 12 0:00 1:00 -
Expand Down Expand Up @@ -892,13 +925,53 @@ Rule Morocco 2017 only - May 21 3:00 0 -
Rule Morocco 2017 only - Jul 2 2:00 1:00 -
Rule Morocco 2018 only - May 13 3:00 0 -
Rule Morocco 2018 only - Jun 17 2:00 1:00 -
Rule Morocco 2019 only - May 5 3:00 -1:00 -
Rule Morocco 2019 only - Jun 9 2:00 0 -
Rule Morocco 2020 only - Apr 19 3:00 -1:00 -
Rule Morocco 2020 only - May 24 2:00 0 -
Rule Morocco 2021 only - Apr 11 3:00 -1:00 -
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 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 -
Rule Morocco 2025 only - Apr 6 2:00 0 -
Rule Morocco 2026 only - Feb 15 3:00 -1:00 -
Rule Morocco 2026 only - Mar 22 2:00 0 -
Rule Morocco 2027 only - Feb 7 3:00 -1:00 -
Rule Morocco 2027 only - Mar 14 2:00 0 -
Rule Morocco 2028 only - Jan 23 3:00 -1:00 -
Rule Morocco 2028 only - Feb 27 2:00 0 -
Rule Morocco 2029 only - Jan 14 3:00 -1:00 -
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 - 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 -
Rule Morocco 2033 only - Jan 9 2:00 0 -
Rule Morocco 2033 only - Nov 20 3:00 -1:00 -
Rule Morocco 2033 only - Dec 25 2:00 0 -
Rule Morocco 2034 only - Nov 5 3:00 -1:00 -
Rule Morocco 2034 only - Dec 17 2:00 0 -
Rule Morocco 2035 only - Oct 28 3:00 -1:00 -
Rule Morocco 2035 only - Dec 2 2:00 0 -
Rule Morocco 2036 only - Oct 19 3:00 -1:00 -
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 -

# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26
0:00 Morocco +00/+01 1984 Mar 16
1:00 - +01 1986
0:00 Morocco +00/+01 2018 Oct 27
1:00 - +01
0:00 Morocco +00/+01 2018 Oct 28 3:00
1:00 Morocco +01/+00

# Western Sahara
#
Expand All @@ -913,8 +986,8 @@ Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26

Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
-1:00 - -01 1976 Apr 14
0:00 Morocco +00/+01 2018 Oct 27
1:00 - +01
0:00 Morocco +00/+01 2018 Oct 28 3:00
1:00 Morocco +01/+00

# Mozambique
#
Expand Down Expand Up @@ -1071,10 +1144,20 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
# the switch is from 01:00 to 02:00 ... [Decree No. 25/2017]
# http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017

# From Vadim Nasardinov (2018-12-29):
# São Tomé and Príncipe is about to do the following on Jan 1, 2019:
# https://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-legal-sao-tomense/
#
# 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.]

Zone Africa/Sao_Tome 0:26:56 - LMT 1884
-0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT
0:00 - GMT 2018 Jan 1 01:00
1:00 - WAT
1:00 - WAT 2019 Jan 1 02:00
0:00 - GMT

# Senegal
# See Africa/Abidjan.
Expand Down
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