Import tzdata 2019c.

Approved by:	so
Security:	FreeBSD-EN-19:18.tzdata

UPDATING

@@ -16,6 +16,10 @@ from older versions of FreeBSD, try WITHOUT_CLANG and WITH_GCC to bootstrap to
 the tip of head, and then rebuild without this option. The bootstrap process
 from older version of current across the gcc/clang cutover is a bit fragile.
 
+20191023	p15	FreeBSD-EN-19:18.tzdata
+
+	Import tzdata 2019c. [EN-19:18.tzdata]
+
 20190820	p14	FreeBSD-SA-19:22.mbuf
 			FreeBSD-SA-19:23.midi
 			FreeBSD-SA-19:24.mqueuefs

contrib/tzdata/NEWS

@@ -1,5 +1,80 @@
 News for the tz database
 
+Release 2019c - 2019-09-11 08:59:48 -0700
+
+  Briefly:
+    Fiji observes DST from 2019-11-10 to 2020-01-12.
+    Norfolk Island starts observing Australian-style DST.
+
+  Changes to future timestamps
+
+    Fiji's next DST transitions will be 2019-11-10 and 2020-01-12
+    instead of 2019-11-03 and 2020-01-19.  (Thanks to Raymond Kumar.)
+    Adjust future guesses accordingly.
+
+    Norfolk Island will observe Australian-style DST starting in
+    spring 2019.  The first transition is on 2019-10-06.  (Thanks to
+    Kyle Czech and Michael Deckers.)
+
+  Changes to past timestamps
+
+    Many corrections to time in Turkey from 1940 through 1985.
+    (Thanks to Oya Vulaş via Alois Treindl, and to Kıvanç Yazan.)
+
+    The Norfolk Island 1975-03-02 transition was at 02:00 standard
+    time, not 02:00 DST.  (Thanks to Michael Deckers.)
+
+    South Korea observed DST from 1948 through 1951.  Although this
+    info was supposed to appear in release 2014j, a typo inadvertently
+    suppressed the change.  (Thanks to Alois Treindl.)
+
+    Detroit observed DST in 1967 and 1968 following the US DST rules,
+    except that its 1967 DST began on June 14 at 00:01.  (Thanks to
+    Alois Treindl for pointing out that the old data entries were
+    probably wrong.)
+
+    Fix several errors in pre-1970 transitions in Perry County, IN.
+    (Thanks to Alois Triendl for pointing out the 1967/9 errors.)
+
+    Edmonton did not observe DST in 1967 or 1969.  In 1946 Vancouver
+    ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not
+    10-06.  In 1945 Königsberg (now Kaliningrad) switched from +01/+02
+    to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated
+    EET/EEST, not CET/CEST.  (Thanks to Alois Triendl.)  In 1946
+    Königsberg switched to +03 on 04-07 not 01-01.
+
+    In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not
+    01-01 at 00:00.  (Thanks to Alois Treindl and Michael Deckers.)
+    Also, it switched from CST to CDT on 1950-04-30, not 1947-04-27.
+
+    The 1892-05-01 transition in Brussels was at 00:17:30, not at noon.
+    (Thanks to Michael Deckers.)
+
+  Changes to past time zone abbreviations and DST flags
+
+    Hong Kong Winter Time, observed from 1941-10-01 to 1941-12-25,
+    is now flagged as DST and is abbreviated HKWT not HKT.
+
+  Changes to code
+
+    leapseconds.awk now relies only on its input data, rather than
+    also relying on its comments.  (Inspired by code from Dennis
+    Ferguson and Chris Woodbury.)
+
+    The code now defends against CRLFs in leap-seconds.list.
+    (Thanks to Brian Inglis and Chris Woodbury.)
+
+  Changes to documentation and commentary
+
+    theory.html discusses leap seconds.  (Thanks to Steve Summit.)
+
+    Nashville's newspapers dueled about the time of day in the 1950s.
+    (Thanks to John Seigenthaler.)
+
+    Liechtenstein observed Swiss DST in 1941/2.
+    (Thanks to Alois Treindl.)
+
+
 Release 2019b - 2019-07-01 00:09:53 -0700
 
   Briefly:

contrib/tzdata/asia

@@ -8,7 +8,7 @@
 # tz@iana.org for general use in the future).  For more, please see
 # the file CONTRIBUTING in the tz distribution.
 
-# From Paul Eggert (2018-06-19):
+# From Paul Eggert (2019-07-11):
 #
 # Unless otherwise specified, the source for data through 1990 is:
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
@@ -47,13 +47,13 @@
 #	7:00 WIB	west Indonesia (Waktu Indonesia Barat)
 #	8:00 WITA	central Indonesia (Waktu Indonesia Tengah)
 #	8:00 CST	China
-#	8:00 PST  PDT*	Philippine Standard Time
+#	8:00 HKT  HKST	Hong Kong (HKWT* for Winter Time in late 1941)
+#	8:00 PST  PDT*	Philippines
 #	8:30 KST  KDT	Korea when at +0830
 #	9:00 WIT	east Indonesia (Waktu Indonesia Timur)
 #	9:00 JST  JDT	Japan
 #	9:00 KST  KDT	Korea when at +09
-#	9:30 ACST	Australian Central Standard Time
-# *I invented the abbreviation PDT; see "Philippines" below.
+# *I invented the abbreviations HKWT and PDT; see below.
 # Otherwise, these tables typically use numeric abbreviations like +03
 # and +0330 for integer hour and minute UT offsets.  Although earlier
 # editions invented alphabetic time zone abbreviations for every
@@ -653,6 +653,15 @@ Zone	Asia/Urumqi	5:50:20	-	LMT	1928
 # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning.
 #   https://i.imgur.com/dge4kFJ.png
 
+# From Paul Eggert (2019-07-11):
+# "Hong Kong winter time" is considered to be daylight saving.
+# "Hong Kong had adopted daylight saving on June 15 as a wartime measure,
+# clocks moving forward one hour until October 1, when they would be put back
+# by just half an hour for 'Hong Kong Winter time', so that daylight saving
+# operated year round." -- Low Z. The longest day: when wartime Hong Kong
+# introduced daylight saving. South China Morning Post. 2019-06-28.
+# https://www.scmp.com/magazines/post-magazine/short-reads/article/3016281/longest-day-when-wartime-hong-kong-introduced
+
 # From P Chan (2018-12-31):
 # * According to the Hong Kong Daylight-Saving Regulations, 1941, the
 #   1941 spring-forward transition was at 03:00.
@@ -754,7 +763,7 @@ Rule	HK	1979	only	-	Oct	21	3:30	0	-
 Zone	Asia/Hong_Kong	7:36:42 -	LMT	1904 Oct 30  0:36:42
 			8:00	-	HKT	1941 Jun 15  3:00
 			8:00	1:00	HKST	1941 Oct  1  4:00
-			8:30	-	HKT	1941 Dec 25
+			8:00	0:30	HKWT	1941 Dec 25
 			9:00	-	JST	1945 Nov 18  2:00
 			8:00	HK	HK%sT
 
@@ -2419,7 +2428,7 @@ Rule	ROK	1987	1988	-	Oct	Sun>=8	 3:00	0	S
 Zone	Asia/Seoul	8:27:52	-	LMT	1908 Apr  1
 			8:30	-	KST	1912 Jan  1
 			9:00	-	JST	1945 Sep  8
-			9:00	-	KST	1954 Mar 21
+			9:00	ROK	K%sT	1954 Mar 21
 			8:30	ROK	K%sT	1961 Aug 10
 			9:00	ROK	K%sT
 Zone	Asia/Pyongyang	8:23:00 -	LMT	1908 Apr  1
@@ -3604,7 +3613,7 @@ Zone	Asia/Tashkent	4:37:11 -	LMT	1924 May  2
 # and in South Vietnam in particular (after 1954):
 # To 07:00 on 1911-05-01.
 # To 08:00 on 1942-12-31 at 23:00.
-# To 09:00 in 1945-03-14 at 23:00.
+# To 09:00 on 1945-03-14 at 23:00.
 # To 07:00 on 1945-09-02 in Vietnam.
 # To 08:00 on 1947-04-01 in French-controlled Indochina.
 # To 07:00 on 1955-07-01 in South Vietnam.

contrib/tzdata/australasia

@@ -367,13 +367,18 @@ Zone	Indian/Cocos	6:27:40	-	LMT	1900
 # From Raymond Kumar (2018-07-13):
 # http://www.fijitimes.com/government-approves-2018-daylight-saving/
 # ... The daylight saving period will end at 3am on Sunday January 13, 2019.
-#
-# From Paul Eggert (2018-07-15):
-# For now, guess DST from 02:00 the first Sunday in November to 03:00
-# the first Sunday on or after January 13.  January transitions reportedly
+
+# From Paul Eggert (2019-08-06):
+# Today Raymond Kumar reported the Government of Fiji Gazette Supplement No. 27
+# (2019-08-02) said that Fiji observes DST "commencing at 2.00 am on
+# Sunday, 10 November 2019 and ending at 3.00 am on Sunday, 12 January 2020."
+# For now, guess DST from 02:00 the second Sunday in November to 03:00
+# the first Sunday on or after January 12.  January transitions reportedly
 # depend on when school terms start.  Although the guess is ad hoc, it matches
-# transitions since late 2014 and seems more likely to match future
-# practice than guessing no DST.
+# transitions planned this year and seems more likely to match future practice
+# than guessing no DST.
+# From Michael Deckers (2019-08-06):
+# https://www.laws.gov.fj/LawsAsMade/downloadfile/848
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Fiji	1998	1999	-	Nov	Sun>=1	2:00	1:00	-
@@ -384,8 +389,9 @@ Rule	Fiji	2010	2013	-	Oct	Sun>=21	2:00	1:00	-
 Rule	Fiji	2011	only	-	Mar	Sun>=1	3:00	0	-
 Rule	Fiji	2012	2013	-	Jan	Sun>=18	3:00	0	-
 Rule	Fiji	2014	only	-	Jan	Sun>=18	2:00	0	-
-Rule	Fiji	2014	max	-	Nov	Sun>=1	2:00	1:00	-
-Rule	Fiji	2015	max	-	Jan	Sun>=13	3:00	0	-
+Rule	Fiji	2014	2018	-	Nov	Sun>=1	2:00	1:00	-
+Rule	Fiji	2015	max	-	Jan	Sun>=12	3:00	0	-
+Rule	Fiji	2019	max	-	Nov	Sun>=8	2:00	1:00	-
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Fiji	11:55:44 -	LMT	1915 Oct 26 # Suva
 			12:00	Fiji	+12/+13
@@ -604,10 +610,11 @@ Zone	Pacific/Niue	-11:19:40 -	LMT	1901        # Alofi
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Norfolk	11:11:52 -	LMT	1901 # Kingston
 			11:12	-	+1112	1951
-			11:30	-	+1130	1974 Oct 27 02:00
-			11:30	1:00	+1230	1975 Mar  2 02:00
-			11:30	-	+1130	2015 Oct  4 02:00
-			11:00	-	+11
+			11:30	-	+1130	1974 Oct 27 02:00s
+			11:30	1:00	+1230	1975 Mar  2 02:00s
+			11:30	-	+1130	2015 Oct  4 02:00s
+			11:00	-	+11	2019 Jul
+			11:00	AN	+11/+12
 
 # Palau (Belau)
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
@@ -1875,12 +1882,21 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # ... at 12.30 am (by legal time in New South Wales) on 4 October 2015.
 # http://www.norfolkisland.gov.nf/nia/MediaRelease/Media%20Release%20Norfolk%20Island%20Standard%20Time%20Change.pdf
 
-# From Paul Eggert (2015-09-23):
+# From Paul Eggert (2019-08-28):
 # Transitions before 2015 are from timeanddate.com, which consulted
 # the Norfolk Island Museum and the Australian Bureau of Meteorology's
 # Norfolk Island station, and found no record of Norfolk observing DST
 # other than in 1974/5.  See:
 # https://www.timeanddate.com/time/australia/norfolk-island.html
+# However, disagree with timeanddate about the 1975-03-02 transition;
+# timeanddate has 02:00 but 02:00s corresponds to what the NSW law said
+# (thanks to Michael Deckers).
+
+# Norfolk started observing Australian DST in spring 2019.
+# From Kyle Czech (2019-08-13):
+# https://www.legislation.gov.au/Details/F2018L01702
+# From Michael Deckers (2019-08-14):
+# https://www.legislation.gov.au/Details/F2019C00010
 
 # Palau
 # See commentary for Micronesia.

contrib/tzdata/backzone

@@ -507,19 +507,35 @@ Zone	Asia/Muscat	3:54:24 -	LMT	1920
 #Zone	Asia/Panaji	[not enough info to complete]
 
 # Cambodia
-# From Paul Eggert (2014-10-11):
-# See Asia/Ho_Chi_Minh for the source for most of this data.  Also, guess
-# (1) Cambodia reverted to UT +07 on 1945-09-02, when Vietnam did, and
-# (2) they also reverted to +07 on 1953-11-09, the date of independence.
-# These guesses are probably wrong but they're better than guessing no
-# transitions there.
+
+# From an adoptive daughter of the late Cambodian ruler Prince Sihanouk,
+# via Alois Treindl (2019-08-08):
+#
+# King Sihanouk said that, during the Japanese occupation, starting with
+# what historians refer to as "le coup de force du 9 mars 1945", Cambodia,
+# like the entire French Indochina, used Tokyo time zone. After Japan
+# surrendered, 2 September 1945, Cambodia fell under French rule again and
+# adopted Hanoi time zone again.
+#
+# However, on 7 January 1946, Sihanouk and Tioulong managed to obtain a
+# status of "internal autonomy" from the government of Charles de Gaulle.
+# Although many fields remained under the administration of the French
+# (customs, taxes, justice, defence, foreign affairs, etc.), the Cambodian
+# administration was responsible for religious matters and traditional
+# celebrations, which included our calendar and time.  The time zone was GMT
+# + 7 and _no_ DST was applied.
+#
+# After Sihanouk and Tioulong achieved full independence, on 9 November 1953,
+# GMT + 7 was maintained.
+
+# From Paul Eggert (2019-08-26):
+# See Asia/Ho_Chi_Minh for the source for most of rest of this data.
+
 Zone	Asia/Phnom_Penh	6:59:40 -	LMT	1906 Jul  1
 			7:06:30	-	PLMT	1911 May  1
 			7:00	-	+07	1942 Dec 31 23:00
 			8:00	-	+08	1945 Mar 14 23:00
 			9:00	-	+09	1945 Sep  2
-			7:00	-	+07	1947 Apr  1
-			8:00	-	+08	1953 Nov  9
 			7:00	-	+07
 
 # Israel
@@ -646,7 +662,7 @@ Zone	Europe/Tiraspol	1:58:32	-	LMT	1880
 
 # Liechtenstein
 Zone	Europe/Vaduz	0:38:04 -	LMT	1894 Jun
-			1:00	-	CET	1981
+			1:00	Swiss	CE%sT	1981
 			1:00	EU	CE%sT
 
 # Croatia