Date: Mon, 27 Apr 2020 03:56:47 +0000 (UTC) From: Philip Paeps <philip@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r360361 - stable/12/contrib/tzdata Message-ID: <202004270356.03R3uls1029176@repo.freebsd.org>
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Author: philip Date: Mon Apr 27 03:56:47 2020 New Revision: 360361 URL: https://svnweb.freebsd.org/changeset/base/360361 Log: MFC r360240: Import tzdata 2020a Modified: stable/12/contrib/tzdata/Makefile stable/12/contrib/tzdata/NEWS stable/12/contrib/tzdata/africa stable/12/contrib/tzdata/asia stable/12/contrib/tzdata/backward stable/12/contrib/tzdata/backzone stable/12/contrib/tzdata/europe stable/12/contrib/tzdata/leap-seconds.list stable/12/contrib/tzdata/leapseconds stable/12/contrib/tzdata/leapseconds.awk stable/12/contrib/tzdata/northamerica stable/12/contrib/tzdata/theory.html stable/12/contrib/tzdata/version stable/12/contrib/tzdata/zone.tab stable/12/contrib/tzdata/zone1970.tab Directory Properties: stable/12/ (props changed) Modified: stable/12/contrib/tzdata/Makefile ============================================================================== --- stable/12/contrib/tzdata/Makefile Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/Makefile Mon Apr 27 03:56:47 2020 (r360361) @@ -150,6 +150,15 @@ TIME_T_ALTERNATIVES_TAIL = int32_t uint32_t uint64_t REDO= posix_right +# Whether to put an "Expires" line in the leapseconds file. +# Use EXPIRES_LINE=1 to put the line in, 0 to omit it. +# The EXPIRES_LINE value matters only if REDO's value contains "right". +# If you change EXPIRES_LINE, remove the leapseconds file before running "make". +# zic's support for the Expires line was introduced in tzdb 2020a, +# and EXPIRES_LINE defaults to 0 for now so that the leapseconds file +# can be given to older zic implementations. +EXPIRES_LINE= 0 + # To install data in text form that has all the information of the TZif data, # (optionally incorporating leap second information), use # TZDATA_TEXT= tzdata.zi leapseconds @@ -295,8 +304,9 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # than TM_GMTOFF and TM_ZONE. However, most of them are standardized. # # # # To omit or support the external variable "tzname", add one of: -# # -DHAVE_TZNAME=0 -# # -DHAVE_TZNAME=1 +# # -DHAVE_TZNAME=0 # do not support "tzname" +# # -DHAVE_TZNAME=1 # support "tzname", which is defined by system library +# # -DHAVE_TZNAME=2 # support and define "tzname" # # to the "CFLAGS=" line. "tzname" is required by POSIX 1988 and later. # # If not defined, the code attempts to guess HAVE_TZNAME from other macros. # # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause @@ -304,16 +314,20 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # # presumably due to memory allocation issues. # # # # To omit or support the external variables "timezone" and "daylight", add -# # -DUSG_COMPAT=0 -# # -DUSG_COMPAT=1 +# # -DUSG_COMPAT=0 # do not support +# # -DUSG_COMPAT=1 # support, and variables are defined by system library +# # -DUSG_COMPAT=2 # support and define variables # # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by # # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later. # # If not defined, the code attempts to guess USG_COMPAT from other macros. # # # # To support the external variable "altzone", add -# # -DALTZONE +# # -DALTZONE=0 # do not support +# # -DALTZONE=1 # support "altzone", which is defined by system library +# # -DALTZONE=2 # support and define "altzone" # # to the end of the "CFLAGS=" line; although "altzone" appeared in # # System V Release 3.1 it has not been standardized. +# # If not defined, the code attempts to guess ALTZONE from other macros. # # If you want functions that were inspired by early versions of X3J11's work, # add @@ -321,9 +335,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # to the end of the "CFLAGS=" line. This arranges for the functions # "tzsetwall", "offtime", "timelocal", "timegm", "timeoff", # "posix2time", and "time2posix" to be added to the time conversion library. -# "tzsetwall" is like "tzset" except that it arranges for local wall clock -# time (rather than the timezone specified in the TZ environment variable) -# to be used. +# "tzsetwall" is deprecated and is intended to be removed soon; see NEWS. # "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". @@ -333,7 +345,6 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # that gives an offset to use when converting to a time_t. # "posix2time" and "time2posix" are described in an included manual page. # X3J11's work does not describe any of these functions. -# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0. # These functions may well disappear in future releases of the time # conversion package. # @@ -505,11 +516,11 @@ RANLIB= : TZCOBJS= zic.o TZDOBJS= zdump.o localtime.o asctime.o strftime.o DATEOBJS= date.o localtime.o strftime.o asctime.o -LIBSRCS= localtime.c asctime.c difftime.c -LIBOBJS= localtime.o asctime.o difftime.o +LIBSRCS= localtime.c asctime.c difftime.c strftime.c +LIBOBJS= localtime.o asctime.o difftime.o strftime.o HEADERS= tzfile.h private.h NONLIBSRCS= zic.c zdump.c -NEWUCBSRCS= date.c strftime.c +NEWUCBSRCS= date.c SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \ tzselect.ksh workman.sh MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \ @@ -651,7 +662,8 @@ yearistype: yearistype.sh chmod +x yearistype leapseconds: $(LEAP_DEPS) - $(AWK) -f leapseconds.awk leap-seconds.list >$@.out + $(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \ + -f leapseconds.awk leap-seconds.list >$@.out mv $@.out $@ # Arguments to pass to submakes of install_data. Modified: stable/12/contrib/tzdata/NEWS ============================================================================== --- stable/12/contrib/tzdata/NEWS Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/NEWS Mon Apr 27 03:56:47 2020 (r360361) @@ -1,5 +1,87 @@ News for the tz database +Release 2020a - 2020-04-23 16:03:47 -0700 + + Briefly: + Morocco springs forward on 2020-05-31, not 2020-05-24. + Canada's Yukon advanced to -07 year-round on 2020-03-08. + America/Nuuk renamed from America/Godthab. + zic now supports expiration dates for leap second lists. + + Changes to future timestamps + + Morocco's second spring-forward transition in 2020 will be May 31, + not May 24 as predicted earlier. (Thanks to Semlali Naoufal.) + Adjust future-year predictions to use the first Sunday after the + day after Ramadan, not the first Sunday after Ramadan. + + Canada's Yukon, represented by America/Whitehorse and + America/Dawson, advanced to -07 year-round, beginning with its + spring-forward transition on 2020-03-08, and will not fall back on + 2020-11-01. Although a government press release calls this + "permanent Pacific Daylight Saving Time", we prefer MST for + consistency with nearby Dawson Creek, Creston, and Fort Nelson. + (Thanks to Tim Parenti.) + + Changes to past timestamps + + Shanghai observed DST in 1919. (Thanks to Phake Nick.) + + Changes to timezone identifiers + + To reflect current usage in English better, America/Godthab has + been renamed to America/Nuuk. A backwards-compatibility link + remains for the old name. + + Changes to code + + localtime.c no longer mishandles timestamps after the last + transition in a TZif file with leap seconds and with daylight + saving time transitions projected into the indefinite future. + For example, with TZ='America/Los_Angeles' with leap seconds, + zdump formerly reported a DST transition on 2038-03-14 + from 01:59:32.999... to 02:59:33 instead of the correct transition + from 01:59:59.999... to 03:00:00. + + zic -L now supports an Expires line in the leapseconds file, and + truncates the TZif output accordingly. This propagates leap + second expiration information into the TZif file, and avoids the + abovementioned localtime.c bug as well as similar bugs present in + many client implementations. If no Expires line is present, zic + -L instead truncates the TZif output based on the #expires comment + present in leapseconds files distributed by tzdb 2018f and later; + however, this usage is obsolescent. For now, the distributed + leapseconds file has an Expires line that is commented out, so + that the file can be fed to older versions of zic which ignore the + commented-out line. Future tzdb distributions are planned to + contain a leapseconds file with an Expires line. + + The configuration macros HAVE_TZNAME and USG_COMPAT should now be + set to 1 if the system library supports the feature, and 2 if not. + As before, these macros are nonzero if tzcode should support the + feature, zero otherwise. + + The configuration macro ALTZONE now has the same values with the + same meaning as HAVE_TZNAME and USG_COMPAT. + + The code's defense against CRLF in leap-seconds.list is now + portable to POSIX awk. (Problem reported by Deborah Goldsmith.) + + Although the undocumented tzsetwall function is not changed in + this release, it is now deprecated in preparation for removal in + future releases. Due to POSIX requirements, tzsetwall has not + worked for some time. Any code that uses it should instead use + tzalloc(NULL) or, if portability trumps thread-safety, should + unset the TZ environment variable. + + Changes to commentary + + The Îles-de-la-Madeleine and the Listuguj reserve are noted as + following America/Halifax, and comments about Yukon's "south" and + "north" have been corrected to say "east" and "west". (Thanks to + Jeffery Nichols.) + + Release 2019c - 2019-09-11 08:59:48 -0700 Briefly: Modified: stable/12/contrib/tzdata/africa ============================================================================== --- stable/12/contrib/tzdata/africa Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/africa Mon Apr 27 03:56:47 2020 (r360361) @@ -867,19 +867,25 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Morocco will be on GMT starting from Sunday, May 5th 2019 at 3am. # The switch to GMT+1 will occur on Sunday, June 9th 2019 at 2am.... # http://fr.le360.ma/societe/voici-la-date-du-retour-a-lheure-legale-au-maroc-188222 + +# From Semlali Naoufal (2020-04-14): +# Following the announcement by the Moroccan government, the switch to +# GMT time will take place on Sunday, April 19, 2020 from 3 a.m. and +# the return to GMT+1 time will take place on Sunday, May 31, 2020 at 2 a.m.... +# https://maroc-diplomatique.net/maroc-le-retour-a-lheure-gmt-est-prevu-dimanche-prochain/ +# http://aujourdhui.ma/actualite/gmt1-retour-a-lheure-normale-dimanche-prochain-1 # -# From Paul Eggert (2019-05-20): -# This agrees with our 2018-11-01 guess that the Moroccan government -# would continue the practice of falling back at 03:00 the last Sunday -# before Ramadan, and of springing 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 2087 were determined by running the -# following program under GNU Emacs 26.2. -# (let ((islamic-year 1440)) +# From Paul Eggert (2020-04-14): +# 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 the day after Ramadan. To implement this, +# transition dates for 2021 through 2087 were determined by running +# the following program under GNU Emacs 26.3. +# (let ((islamic-year 1442)) # (require 'cal-islam) # (while (< islamic-year 1511) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (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)) @@ -939,7 +945,7 @@ 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 2020 only - May 31 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 - @@ -955,7 +961,7 @@ 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 2028 only - Mar 5 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 - @@ -971,7 +977,7 @@ 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 2035 only - Dec 9 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 - @@ -987,7 +993,7 @@ Rule Morocco 2041 only - Sep 29 2:00 0 - Rule Morocco 2042 only - Aug 10 3:00 -1:00 - Rule Morocco 2042 only - Sep 21 2:00 0 - Rule Morocco 2043 only - Aug 2 3:00 -1:00 - -Rule Morocco 2043 only - Sep 6 2:00 0 - +Rule Morocco 2043 only - Sep 13 2:00 0 - Rule Morocco 2044 only - Jul 24 3:00 -1:00 - Rule Morocco 2044 only - Aug 28 2:00 0 - Rule Morocco 2045 only - Jul 9 3:00 -1:00 - @@ -1003,7 +1009,7 @@ Rule Morocco 2049 only - Jul 4 2:00 0 - Rule Morocco 2050 only - May 15 3:00 -1:00 - Rule Morocco 2050 only - Jun 26 2:00 0 - Rule Morocco 2051 only - May 7 3:00 -1:00 - -Rule Morocco 2051 only - Jun 11 2:00 0 - +Rule Morocco 2051 only - Jun 18 2:00 0 - Rule Morocco 2052 only - Apr 28 3:00 -1:00 - Rule Morocco 2052 only - Jun 2 2:00 0 - Rule Morocco 2053 only - Apr 13 3:00 -1:00 - @@ -1019,7 +1025,7 @@ Rule Morocco 2057 only - Apr 8 2:00 0 - Rule Morocco 2058 only - Feb 17 3:00 -1:00 - Rule Morocco 2058 only - Mar 31 2:00 0 - Rule Morocco 2059 only - Feb 9 3:00 -1:00 - -Rule Morocco 2059 only - Mar 16 2:00 0 - +Rule Morocco 2059 only - Mar 23 2:00 0 - Rule Morocco 2060 only - Feb 1 3:00 -1:00 - Rule Morocco 2060 only - Mar 7 2:00 0 - Rule Morocco 2061 only - Jan 16 3:00 -1:00 - @@ -1029,13 +1035,13 @@ 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 - -Rule Morocco 2064 only - Jan 20 2:00 0 - +Rule Morocco 2064 only - Jan 27 2:00 0 - Rule Morocco 2064 only - Dec 7 3:00 -1:00 - Rule Morocco 2065 only - Jan 11 2:00 0 - Rule Morocco 2065 only - Nov 22 3:00 -1:00 - Rule Morocco 2066 only - Jan 3 2:00 0 - Rule Morocco 2066 only - Nov 14 3:00 -1:00 - -Rule Morocco 2066 only - Dec 19 2:00 0 - +Rule Morocco 2066 only - Dec 26 2:00 0 - Rule Morocco 2067 only - Nov 6 3:00 -1:00 - Rule Morocco 2067 only - Dec 11 2:00 0 - Rule Morocco 2068 only - Oct 21 3:00 -1:00 - @@ -1045,13 +1051,13 @@ 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 - -Rule Morocco 2071 only - Oct 25 2:00 0 - +Rule Morocco 2071 only - Nov 1 2:00 0 - Rule Morocco 2072 only - Sep 11 3:00 -1:00 - Rule Morocco 2072 only - Oct 16 2:00 0 - Rule Morocco 2073 only - Aug 27 3:00 -1:00 - Rule Morocco 2073 only - Oct 8 2:00 0 - Rule Morocco 2074 only - Aug 19 3:00 -1:00 - -Rule Morocco 2074 only - Sep 23 2:00 0 - +Rule Morocco 2074 only - Sep 30 2:00 0 - Rule Morocco 2075 only - Aug 11 3:00 -1:00 - Rule Morocco 2075 only - Sep 15 2:00 0 - Rule Morocco 2076 only - Jul 26 3:00 -1:00 - @@ -1061,7 +1067,7 @@ 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 - -Rule Morocco 2079 only - Jul 30 2:00 0 - +Rule Morocco 2079 only - Aug 6 2:00 0 - Rule Morocco 2080 only - Jun 16 3:00 -1:00 - Rule Morocco 2080 only - Jul 21 2:00 0 - Rule Morocco 2081 only - Jun 1 3:00 -1:00 - @@ -1077,7 +1083,7 @@ 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 - -Rule Morocco 2087 only - May 4 2:00 0 - +Rule Morocco 2087 only - May 11 2:00 0 - # For dates after the somewhat-arbitrary cutoff of 2087, assume that # Morocco will no longer observe DST. At some point this table will # need to be extended, though quite possibly Morocco will change the @@ -1179,7 +1185,7 @@ Link Africa/Maputo Africa/Lusaka # Zambia Rule Namibia 1994 only - Mar 21 0:00 -1:00 WAT Rule Namibia 1994 2017 - Sep Sun>=1 2:00 0 CAT Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. #Rule Namibia 1994 only - Mar 21 0:00 0 WAT #Rule Namibia 1994 2017 - Sep Sun>=1 2:00 1:00 CAT #Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT @@ -1193,7 +1199,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 2:00 - SAST 1990 Mar 21 # independence # Vanguard section, for zic and other parsers that support negative DST. 2:00 Namibia %s -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 2:00 - CAT 1994 Mar 21 0:00 # From Paul Eggert (2017-04-07): # The official date of the 2017 rule change was 2017-10-24. See: Modified: stable/12/contrib/tzdata/asia ============================================================================== --- stable/12/contrib/tzdata/asia Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/asia Mon Apr 27 03:56:47 2020 (r360361) @@ -286,6 +286,27 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoo # China +# From Phake Nick (2020-04-15): +# According to this news report: +# http://news.sina.com.cn/c/2004-09-01/19524201403.shtml +# on April 11, 1919, newspaper in Shanghai said clocks in Shanghai will spring +# forward for an hour starting from midnight of that Saturday. The report did +# not mention what happened in Shanghai thereafter, but it mentioned that a +# similar trial in Tianjin which ended at October 1st as citizens are told to +# recede the clock on September 30 from 12:00pm to 11:00pm. The trial at +# Tianjin got terminated in 1920. +# +# From Paul Eggert (2020-04-15): +# The Returns of Trade and Trade Reports, page 711, says "Daylight saving was +# given a trial during the year, and from the 12th April to the 1st October +# the clocks were all set one hour ahead of sun time. Though the scheme was +# generally esteemed a success, it was announced early in 1920 that it would +# not be repeated." +# +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Shang 1919 only - Apr 12 24:00 1:00 D +Rule Shang 1919 only - Sep 30 24:00 0 S + # From Paul Eggert (2018-10-02): # The following comes from Table 1 of: # Li Yu. Research on the daylight saving movement in 1940s Shanghai. @@ -294,7 +315,90 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoo # The table lists dates only; I am guessing 00:00 and 24:00 transition times. # Also, the table lists the planned end of DST in 1949, but the corresponding # zone line cuts this off on May 28, when the Communists took power. + +# From Phake Nick (2020-04-15): # +# For the history of time in Shanghai between 1940-1942, the situation is +# actually slightly more complex than the table [below].... At the time, +# there were three different authorities in Shanghai, including Shanghai +# International Settlement, a settlement established by western countries with +# its own westernized form of government, Shanghai French Concession, similar +# to the international settlement but is controlled by French, and then the +# rest of the city of Shanghai, which have already been controlled by Japanese +# force through a puppet local government (Wang Jingwei regime). It was +# additionally complicated by the circumstances that, according to the 1940s +# Shanghai summer time essay cited in the database, some +# departments/businesses/people in the Shanghai city itself during that time +# period, refused to change their clock and instead only changed their opening +# hours. +# +# For example, as quoted in the article, in 1940, other than the authority +# itself, power, tram, bus companies, cinema, department stores, and other +# public service organizations have all decided to follow the summer time and +# spring forward the clock. On the other hand, the custom office refused to +# spring forward the clock because of worry on mechanical wear to the physical +# clock, postal office refused to spring forward because of disruption to +# business and log-keeping, although they did changed their office hour to +# match rest of the city. So is travel agents, and also weather +# observatory. It is said both time standards had their own supporters in the +# city at the time, those who prefer new time standard would have moved their +# clock while those who prefer the old time standard would keep their clock +# unchange, and there were different clocks that use different time standard +# 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". +# +# 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 +# after discussion with relevant parties. However schools restored to the +# original schedule ten days earlier. +# +# c. For the 1941 spring forward, it is said to start from March 15 +# "following the previous year's method", and in addition to that the essay +# cited an announcement in 1941 from the Wang regime which said the Special +# City of Shanghai under Wang regime control will follow the DST rule set by +# the Settlements, irrespective of the original DST plan announced by the Wang +# regime for other area under its control(April 1 to September 30). (no idea +# to situation before that announcement) +# +# d. For the 1941 fall back, it was said that the fall back would occurs at +# the end of September (A newspaper headline cited by the essay, published on +# October 1, 1941, have the headlines which said "French Concession would +# rewind to the old clock this morning), but it ultimately didn't happen due +# to disagreement between the international settlement authority and the +# French concession authority, and the fall back ultimately occurred on +# November 1. +# +# e. In 1941 December, Japan have officially started war with the United +# States and the United Kingdom, and in Shanghai they have marched into the +# international settlement, taken over its control +# +# f. For the 1942 spring forward, the essay said that the spring forward +# started on January 31. It said this time the custom office and postal +# department will also change their clocks, unlike before. +# +# g. The essay itself didn't cover any specific changes thereafter until the +# end of the war, it quoted a November 1942 command from the government of the +# Wang regime, which claim the daylight saving time applies year round during +# the war. However, the essay ambiguously said the period is "February 1 to +# September 30", which I don't really understand what is the meaning of such +# period in the context of year round implementation here.. More researches +# might be needed to show exactly what happened during that period of time. + +# From Phake Nick (2020-04-15): +# According to a Japanese tour bus pamphlet in Nanjing area believed to be +# from around year 1941: http://www.tt-museum.jp/tairiku_0280_nan1941.html , +# the schedule listed was in the format of Japanese time. Which indicate some +# use of the Japanese time (instead of syncing by DST) might have occurred in +# the Yangtze river delta area during that period of time although the scope +# of such use will need to be investigated to determine. +# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Shang 1940 only - Jun 1 0:00 1:00 D Rule Shang 1940 only - Oct 12 24:00 0 S @@ -572,7 +676,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 6:00 - +06 -# Hong Kong (Xianggang) +# Hong Kong # Milne gives 7:36:41.7; round this. @@ -582,9 +686,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # it is not [an] observatory, but the official meteorological agency of HK, # and also serves as the official timing agency), there are some missing # and incorrect rules. Although the exact switch over time is missing, I -# think 3:30 is correct. The official DST record for Hong Kong can be -# obtained from -# http://www.hko.gov.hk/gts/time/Summertime.htm +# think 3:30 is correct. # From Phake Nick (2018-10-27): # According to Singaporean newspaper @@ -695,10 +797,10 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # Resolution of the Legislative Council passed on 9 May 1979 # https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39 -# From Paul Eggert (2019-05-31): +# From Paul Eggert (2020-04-15): # Here are the dates given at -# https://www.hko.gov.hk/gts/time/Summertime.htm -# as of 2014-06-19: +# https://www.hko.gov.hk/en/gts/time/Summertime.htm +# as of 2020-02-10: # Year Period # 1941 15 Jun to 30 Sep # 1942 Whole year @@ -1828,6 +1930,47 @@ Zone Asia/Jerusalem 2:20:54 - LMT 1880 # '9:00' and 'JST' is from Guy Harris. +# From Paul Eggert (2020-01-19): +# Starting in the 7th century, Japan generally followed an ancient Chinese +# timekeeping system that divided night and day into six hours each, +# with hour length depending on season. In 1873 the government +# started requiring the use of a Western style 24-hour clock. See: +# Yulia Frumer, "Making Time: Astronomical Time Measurement in Tokugawa Japan" +# <https://www.worldcat.org/oclc/1043907065>. As the tzdb code and +# data support only 24-hour clocks, its tables model timestamps before +# 1873 using Western-style local mean time. + +# From Hideyuki Suzuki (1998-11-09): +# 'Tokyo' usually stands for the former location of Tokyo Astronomical +# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. +# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' +# edited by National Astronomical Observatory of Japan.... +# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). +# The law is enacted on 1886-07-07. + +# From Hideyuki Suzuki (1998-11-16): +# The ordinance No. 51 (1886) established "standard time" in Japan, +# which stands for the time on 135° E. +# In the ordinance No. 167 (1895), "standard time" was renamed to "central +# standard time". And the same ordinance also established "western standard +# time", which stands for the time on 120° E.... But "western standard +# time" was abolished in the ordinance No. 529 (1937). In the ordinance No. +# 167, there is no mention regarding for what place western standard time is +# standard.... +# +# I wrote "ordinance" above, but I don't know how to translate. +# In Japanese it's "chokurei", which means ordinance from emperor. + +# From Yu-Cheng Chuang (2013-07-12): +# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause +# about standard time" ... The adoption began from Jan 1, 1896. +# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) +# +# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which +# means the whole Japan territory, including later occupations, adopt Japan +# Central Time (UT+9). The adoption began on Oct 1, 1937. +# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ + # From Paul Eggert (1995-03-06): # Today's _Asahi Evening News_ (page 4) reports that Japan had # daylight saving between 1948 and 1951, but "the system was discontinued @@ -1876,37 +2019,6 @@ Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D -# From Hideyuki Suzuki (1998-11-09): -# 'Tokyo' usually stands for the former location of Tokyo Astronomical -# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. -# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' -# edited by National Astronomical Observatory of Japan.... -# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). -# The law is enacted on 1886-07-07. - -# From Hideyuki Suzuki (1998-11-16): -# The ordinance No. 51 (1886) established "standard time" in Japan, -# which stands for the time on 135° E. -# In the ordinance No. 167 (1895), "standard time" was renamed to "central -# standard time". And the same ordinance also established "western standard -# time", which stands for the time on 120° E.... But "western standard -# time" was abolished in the ordinance No. 529 (1937). In the ordinance No. -# 167, there is no mention regarding for what place western standard time is -# standard.... -# -# I wrote "ordinance" above, but I don't know how to translate. -# In Japanese it's "chokurei", which means ordinance from emperor. - -# From Yu-Cheng Chuang (2013-07-12): -# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause -# about standard time" ... The adoption began from Jan 1, 1896. -# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) -# -# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which -# means the whole Japan territory, including later occupations, adopt Japan -# Central Time (UT+9). The adoption began on Oct 1, 1937. -# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 9:00 Japan J%sT @@ -3086,22 +3198,9 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # [T]he Palestinian cabinet decision (Mar 8th 2016) published on # http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf # states that summer time will end on Oct 29th at 01:00. -# -# From Tim Parenti (2016-10-19): -# Predict fall transitions on October's last Saturday at 01:00 from now on. -# This is consistent with the 2016 transition as well as our spring -# predictions. -# -# From Paul Eggert (2016-10-19): -# It's also consistent with predictions in the following URLs today: -# https://www.timeanddate.com/time/change/gaza-strip/gaza -# https://www.timeanddate.com/time/change/west-bank/hebron # From Sharef Mustafa (2018-03-16): -# Palestine summer time will start on Mar 24th 2018 by advancing the -# clock by 60 minutes as per Palestinian cabinet decision published on -# the official website, though the decree did not specify the exact -# time of the time shift. +# Palestine summer time will start on Mar 24th 2018 ... # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817 # From Even Scharning (2019-03-23): @@ -3111,15 +3210,20 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # From Sharif Mustafa (2019-03-26): # The Palestinian cabinet announced today that the switch to DST will # be on Fri Mar 29th 2019 by advancing the clock by 60 minutes. -# The decree signing date is Mar 12th but it was not published till today. -# The decree does not specify the exact time of switch. # http://palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e54e9ea1-50ee-4137-84df-0d6c78da259b # # From Even Scharning (2019-04-10): # Our source in Palestine said it happened Friday 29 at 00:00 local time.... + +# From Sharef Mustafa (2019-10-18): +# Palestine summer time will end on midnight Oct 26th 2019 ... +# http://www.palestinecabinet.gov.ps/website/ar/ViewDetails?ID=43948 # # From Paul Eggert (2019-04-10): # For now, guess spring-ahead transitions are March's last Friday at 00:00. +# +# From Tim Parenti (2016-10-19): +# Predict fall transitions on October's last Saturday at 01:00 from now on. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EgyptAsia 1957 only - May 10 0:00 1:00 S Modified: stable/12/contrib/tzdata/backward ============================================================================== --- stable/12/contrib/tzdata/backward Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/backward Mon Apr 27 03:56:47 2020 (r360361) @@ -17,6 +17,7 @@ Link America/Atikokan 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 Modified: stable/12/contrib/tzdata/backzone ============================================================================== --- stable/12/contrib/tzdata/backzone Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/backzone Mon Apr 27 03:56:47 2020 (r360361) @@ -33,6 +33,35 @@ # assumes rules from other files. In the tz distribution, use # 'make PACKRATDATA=backzone zones' to compile and install this file. + +# From Paul Eggert (2020-04-15): +# The following remarks should be incorporated into this table sometime. +# Patches in 'git format-patch' format would be welcome. +# +# From Phake Nick (2020-04-15): +# ... the historical timezone data for those China zones seems to be +# incorrect. The transition to GMT+8 date given there for these zones +# were 1980 which also contradict the file description that they do +# not disagree with normal zone after 1970. According to sources that +# have also been cited in the asia file, except Xinjiang and Tibet, +# they should have adopted the Beijing Time from around 1949/1950 +# depends on exactly when each of those cities were taken over by the +# communist army. And they should also follow the DST setting of +# Asia/Shanghai after that point of time. In addition, +# http://gaz.ncl.edu.tw/detail.jsp?sysid=E1091792 the document from +# Chongqing Nationalist government say in year 1945 all of China +# should adopt summer time due to the war (not sure whether it +# continued after WWII ends)(Probably only enforced in area under +# their rule at the time?) The Asia/Harbin's 1932 and 1940 entry +# should also be incorrect. As per sources recorded at +# https://wiki.suikawiki.org/n/%E6%BA%80%E5%B7%9E%E5%9B%BD%E3%81%AE%E6%A8%99%E6%BA%96%E6%99%82 +# , in 1932 Harbin should have adopted UTC+8:00 instead of data +# currently listed in the tz database according to official +# announcement from Manchuko. And they should have adopted GMT+9 in +# 1937 January 1st according to official announcement at the time +# being cited on the webpage. + + # 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. Modified: stable/12/contrib/tzdata/europe ============================================================================== --- stable/12/contrib/tzdata/europe Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/europe Mon Apr 27 03:56:47 2020 (r360361) @@ -549,12 +549,13 @@ Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 0:00 1:00 IST 1947 Nov 2 2:00s 0:00 - GMT 1948 Apr 18 2:00s 0:00 GB-Eire GMT/IST 1968 Oct 27 -# The next line is for when negative SAVE values are used. +# Vanguard section, for zic and other parsers that support negative DST. 1:00 Eire IST/GMT -# These three lines are for when SAVE values are always nonnegative. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 1:00 - IST 1971 Oct 31 2:00u # 0:00 GB-Eire GMT/IST 1996 # 0:00 EU GMT/IST +# End of rearguard section. ############################################################################### @@ -1018,7 +1019,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850 1:00 Czech CE%sT 1946 Dec 1 3:00 # Vanguard section, for zic and other parsers that support negative DST. 1:00 -1:00 GMT 1947 Feb 23 2:00 -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 0:00 - GMT 1947 Feb 23 2:00 # End of rearguard section. 1:00 Czech CE%sT 1979 @@ -1175,14 +1176,17 @@ Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28 -3:00 - -03 1980 Apr 6 2:00 -3:00 EU -03/-02 1996 0:00 - GMT +# +# Use the old name Scoresbysund, as the current name Ittoqqortoormiit +# exceeds tzdb's 14-letter limit and has no common English abbreviation. Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit -2:00 - -02 1980 Apr 6 2:00 -2:00 C-Eur -02/-01 1981 Mar 29 -1:00 EU -01/+00 -Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk +Zone America/Nuuk -3:26:56 - LMT 1916 Jul 28 # Godthåb -3:00 - -03 1980 Apr 6 2:00 -3:00 EU -03/-02 -Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base +Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik -4:00 Thule A%sT # Estonia @@ -1552,7 +1556,7 @@ Zone Europe/Budapest 1:16:20 - LMT 1890 Oct # # 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 Reykjavik mean solar time which +# 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 Modified: stable/12/contrib/tzdata/leap-seconds.list ============================================================================== --- stable/12/contrib/tzdata/leap-seconds.list Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/leap-seconds.list Mon Apr 27 03:56:47 2020 (r360361) @@ -62,7 +62,7 @@ # Terry Quinn, "The BIPM and the Accurate Measurement # of Time," Proc. of the IEEE, Vol. 79, pp. 894-905, # July, 1991. <http://dx.doi.org/10.1109/5.84965>; -# reprinted in: +# reprinted in: # Christine Hackman and Donald B Sullivan (eds.) # Time and Frequency Measurement # American Association of Physics Teachers (1996) @@ -204,10 +204,10 @@ # current -- the update time stamp, the data and the name of the file # will not change. # -# Updated through IERS Bulletin C58 -# File expires on: 28 June 2020 +# Updated through IERS Bulletin C59 +# File expires on: 28 December 2020 # -#@ 3802291200 +#@ 3818102400 # 2272060800 10 # 1 Jan 1972 2287785600 11 # 1 Jul 1972 @@ -252,4 +252,4 @@ # the hash line is also ignored in the # computation. # -#h f28827d2 f263b6c3 ec0f19eb a3e0dbf0 97f3fa30 +#h a1c168ae 27c79a7d 9dddcfc3 bcfe616b 2e2c44ea Modified: stable/12/contrib/tzdata/leapseconds ============================================================================== --- stable/12/contrib/tzdata/leapseconds Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/leapseconds Mon Apr 27 03:56:47 2020 (r360361) @@ -64,9 +64,15 @@ Leap 2012 Jun 30 23:59:60 + S Leap 2015 Jun 30 23:59:60 + S Leap 2016 Dec 31 23:59:60 + S +# UTC timestamp when this leap second list expires. +# 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 2020 Dec 28 00:00:00 + # POSIX timestamps for the data in this file: #updated 1467936000 (2016-07-08 00:00:00 UTC) -#expires 1593302400 (2020-06-28 00:00:00 UTC) +#expires 1609113600 (2020-12-28 00:00:00 UTC) -# Updated through IERS Bulletin C58 -# File expires on: 28 June 2020 +# Updated through IERS Bulletin C59 +# File expires on: 28 December 2020 Modified: stable/12/contrib/tzdata/leapseconds.awk ============================================================================== --- stable/12/contrib/tzdata/leapseconds.awk Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/leapseconds.awk Mon Apr 27 03:56:47 2020 (r360361) @@ -68,12 +68,12 @@ BEGIN { monthabbr[11] = "Nov" monthabbr[12] = "Dec" - # Strip trailing CR, in case the input has CRLF form a la NIST. - RS = "\r?\n" - sstamp_init() } +# In case the input has CRLF form a la NIST. +{ sub(/\r$/, "") } + /^#[ \t]*[Uu]pdated through/ || /^#[ \t]*[Ff]ile expires on/ { last_lines = last_lines $0 "\n" } @@ -100,6 +100,17 @@ 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." + 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 + # The difference between the NTP and POSIX epochs is 70 years # (including 17 leap days), each 24 hours of 60 minutes of 60 # seconds each. Modified: stable/12/contrib/tzdata/northamerica ============================================================================== --- stable/12/contrib/tzdata/northamerica Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/northamerica Mon Apr 27 03:56:47 2020 (r360361) @@ -86,7 +86,7 @@ # For more about the first ten years of DST in the United States, see # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint # (Carnegie Library of Pittsburgh, 1927). -# http://www.clpgh.org/exhibit/dst.html +# https://web.archive.org/web/20160517155308/http://www.clpgh.org/exhibit/dst.html # # Shanks says that DST was called "War Time" in the US in 1918 and 1919. # However, DST was imposed by the Standard Time Act of 1918, which @@ -1470,7 +1470,8 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Val -4:00 Canada A%sT -# west Labrador, Nova Scotia, Prince Edward I +# west Labrador, Nova Scotia, Prince Edward I, +# Îles-de-la-Madeleine, Listuguj reserve # From Brian Inglis (2015-07-20): # From the historical weather station records available at: @@ -1489,6 +1490,13 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Val # in Canada to observe DST in 1971 but not 1970; for now we'll assume # this is a typo. +# From Jeffery Nichols (2020-01-09): +# America/Halifax ... also applies to Îles-de-la-Madeleine and the Listuguj +# reserve in Quebec. Officially, this came into effect on January 1, 2007 +# (Legal Time Act, CQLR c T-5.1), but the legislative debates surrounding that +# bill say that it is "accommodating the customs and practices" of those +# regions, which suggests that they have always been in-line with Halifax. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Halifax 1916 only - Apr 1 0:00 1:00 D Rule Halifax 1916 only - Oct 1 0:00 0 S @@ -1582,19 +1590,20 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # Quebec -# From Paul Eggert (2015-03-24): +# From Paul Eggert (2020-01-10): # See America/Toronto for most of Quebec, including Montreal. +# See America/Halifax for the Îles de la Madeleine and the Listuguj reserve. # # Matthews and Vincent (1998) also write that Quebec east of the -63 # meridian is supposed to observe AST, but residents as far east as # Natashquan use EST/EDT, and residents east of Natashquan use AST. # The Quebec department of justice writes in # "The situation in Minganie and Basse-Côte-Nord" -# http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm +# https://www.justice.gouv.qc.ca/en/department/ministre/functions-and-responsabilities/legal-time-in-quebec/the-situation-in-minganie-and-basse-cote-nord/ # that the coastal strip from just east of Natashquan to Blanc-Sablon # observes Atlantic standard time all year round. -# https://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en -# says this common practice was codified into law as of 2007. +# This common practice was codified into law as of 2007; see Legal Time Act, +# CQLR c T-5.1 <http://legisquebec.gouv.qc.ca/en/ShowDoc/cs/T-5.1>. # For lack of better info, guess this practice began around 1970, contra to # Shanks & Pottenger who have this region observing AST/ADT. @@ -1613,6 +1622,15 @@ Zone America/Blanc-Sablon -3:48:28 - LMT 1884 # 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 @@ -2419,6 +2437,18 @@ Zone America/Creston -7:46:04 - LMT 1884 # obtained in November 2008 should be ignored... # I apologize for reporting incorrect information in 2008. +# From Tim Parenti (2020-03-05): +# The government of Yukon announced [yesterday] the cessation of seasonal time +# changes. "After clocks are pushed ahead one hour on March 8, the territory +# will remain on [UTC-07]. ... [The government] found 93 per cent of +# respondents wanted to end seasonal time changes and, of that group, 70 per +# cent wanted 'permanent Pacific Daylight Saving Time.'" +# https://www.cbc.ca/news/canada/north/yukon-end-daylight-saving-time-1.5486358 +# +# Although the government press release prefers PDT, we prefer MST for +# consistency with nearby Dawson Creek, Creston, and Fort Nelson. +# https://yukon.ca/en/news/yukon-end-seasonal-time-change + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S @@ -2473,11 +2503,13 @@ Zone America/Inuvik 0 - -00 1953 # Inuvik founded 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 - -8:00 Canada P%sT + -8:00 Canada P%sT 2020 Mar 8 2:00 + -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 - -8:00 Canada P%sT + -8:00 Canada P%sT 2020 Mar 8 2:00 + -7:00 - MST ############################################################################### Modified: stable/12/contrib/tzdata/theory.html ============================================================================== --- stable/12/contrib/tzdata/theory.html Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/theory.html Mon Apr 27 03:56:47 2020 (r360361) @@ -298,6 +298,10 @@ in decreasing order of importance: If a name is changed, put its old spelling in the '<code>backward</code>' file. This means old spellings will continue to work. + Ordinarily a name change should occur only in the rare case when + a location's consensus English-language spelling changes; for example, + in 2008 <code>Asia/Calcutta</code> was renamed to <code>Asia/Kolkata</code> + due to long-time widespread use of the new city name instead of the old. </li> </ul> @@ -1054,23 +1058,6 @@ an older <code>zic</code>. The functions were inspired by <a href="https://netbsd.org/">NetBSD</a>. </li> <li> - A function <code>tzsetwall</code> has been added to arrange for the - system's best approximation to local (wall clock) time to be delivered - by subsequent calls to <code>localtime</code>. - Source code for portable applications that "must" run on local - time should call <code>tzsetwall</code>; - if such code is moved to "old" systems that do not - provide <code>tzsetwall</code>, you will not be able to generate an - executable program. - (These functions also arrange for local time to - be used if <code>tzset</code> is called – directly or - indirectly – and there is no <code>TZ</code> environment - variable; portable applications should not, however, rely on this - behavior since it is not the way <a - href="https://en.wikipedia.org/wiki/UNIX_System_V#SVR2"><abbr>SVR2</abbr></a>; - systems behave.) - </li> - <li> Negative <code>time_t</code> values are supported, on systems where <code>time_t</code> is signed. </li> @@ -1137,7 +1124,7 @@ The vestigial <abbr>API</abbr>s are: may now examine <code>localtime(&clock)->tm_zone</code> (if <code>TM_ZONE</code> is defined) or <code>tzname[localtime(&clock)->tm_isdst]</code> - (if <code>HAVE_TZNAME</code> is defined) to learn the correct time + (if <code>HAVE_TZNAME</code> is nonzero) to learn the correct time zone abbreviation to use. </li> <li> Modified: stable/12/contrib/tzdata/version ============================================================================== --- stable/12/contrib/tzdata/version Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/version Mon Apr 27 03:56:47 2020 (r360361) @@ -1 +1 @@ -2019c +2020a Modified: stable/12/contrib/tzdata/zone.tab ============================================================================== --- stable/12/contrib/tzdata/zone.tab Mon Apr 27 02:48:49 2020 (r360360) +++ stable/12/contrib/tzdata/zone.tab Mon Apr 27 03:56:47 2020 (r360361) @@ -131,8 +131,8 @@ CA +4906-11631 America/Creston MST - BC (Creston) CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +4916-12307 America/Vancouver Pacific - BC (most areas) -CA +6043-13503 America/Whitehorse Pacific - Yukon (south) -CA +6404-13925 America/Dawson Pacific - Yukon (north) +CA +6043-13503 America/Whitehorse Pacific - Yukon (east) +CA +6404-13925 America/Dawson Pacific - Yukon (west) CC -1210+09655 Indian/Cocos *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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