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NEX-17697 update tzdata to 2018e
Reviewed by: Dan Fields <dan.fields@nexenta.com>
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
8968 update tzdata to 2018a
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
NEX-15458 update zoneinfo to 2017c
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
NEX-15458 update zoneinfo to 2017c
Reviewed by: Roman Strashkin <roman.strashkin@nexenta.com>
@@ -4,11 +4,11 @@
# This file is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2017-02-20):
+# From Paul Eggert (2017-04-09):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
@@ -50,11 +50,11 @@
# Murray's suggestion seems to have caught on in news reports and the like.
# I vaguely recall 'WAT' also being used for -01 in the past but
# cannot now come up with solid citations.
#
# I invented the following abbreviations; corrections are welcome!
-# +02 WAST West Africa Summer Time
+# +02 WAST West Africa Summer Time (no longer used)
# +03 CAST Central Africa Summer Time (no longer used)
# +03 SAST South Africa Summer Time (no longer used)
# +03 EAT East Africa Time
# 'EAT' also seems to have caught on; the others are rare but are paired
# with better-attested non-DST abbreviations.
@@ -113,17 +113,17 @@
# Cameroon
# See Africa/Lagos.
# Cape Verde / Cabo Verde
#
+# From Paul Eggert (2018-02-16):
# Shanks gives 1907 for the transition to +02.
-# Perhaps the 1911-05-26 Portuguese decree
-# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
-# merely made it official?
+# For now, ignore that and follow the 1911-05-26 Portuguese decree
+# (see Europe/Lisbon).
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia
+Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia
-2:00 - -02 1942 Sep
-2:00 1:00 -01 1945 Oct 15
-2:00 - -02 1975 Nov 25 2:00
-1:00 - -01
@@ -368,35 +368,54 @@
# Gambia
# See Africa/Abidjan.
# Ghana
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+
+# From Paul Eggert (2018-01-30):
# Whitman says DST was observed from 1931 to "the present";
-# Shanks & Pottenger say 1936 to 1942;
-# and September 1 to January 1 is given by:
-# Scott Keltie J, Epstein M (eds), The Statesman's Year-Book,
-# 57th ed. Macmillan, London (1920), OCLC 609408015, pp xxviii.
-# For lack of better info, assume DST was observed from 1920 to 1942.
-Rule Ghana 1920 1942 - Sep 1 0:00 0:20 GHST
-Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT
+# Shanks & Pottenger say 1936 to 1942 with 20 minutes of DST,
+# with transitions on 09-01 and 12-31 at 00:00.
+# Page 33 of Parish GCB, Colonial Reports - Annual. No. 1066. Gold
+# Coast. Report for 1919. (March 1921), OCLC 784024077
+# http://libsysdigi.library.illinois.edu/ilharvest/africana/books2011-05/5530214/5530214_1919/5530214_1919_opt.pdf
+# lists the Determination of the Time Ordinance, 1919, No. 18,
+# "to advance the time observed locally by the space of twenty minutes
+# during the last four months of each year; the object in view being
+# to extend during those months the period of daylight-time available
+# for evening recreation after office hours."
+# Vanessa Ogle, The Global Transformation of Time, 1870-1950 (2015), p 33,
+# writes "In 1919, the Gold Coast (Ghana as of 1957) made Greenwich
+# time its legal time and simultaneously legalized a summer time of
+# UTC - 00:20 minutes from March to October."; a footnote lists
+# the ordinance as being dated 1919-11-24.
+# The Crown Colonist, Volume 12 (1942), p 176, says "the Government
+# intend advancing Gold Coast time half an hour ahead of G.M.T.
+# The actual date of the alteration has not yet been announced."
+# These sources are incomplete and contradictory. Possibly what is
+# now Ghana observed different DST regimes in different years. For
+# lack of better info, use Shanks except treat the minus sign as a
+# typo, and assume DST started in 1920 not 1936.
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Ghana 1920 1942 - Sep 1 0:00 0:20 -
+Rule Ghana 1920 1942 - Dec 31 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Accra -0:00:52 - LMT 1918
0:00 Ghana GMT/+0020
# Guinea
# See Africa/Abidjan.
# Guinea-Bissau
#
+# From Paul Eggert (2018-02-16):
# Shanks gives 1911-05-26 for the transition to WAT,
# evidently confusing the date of the Portuguese decree
-# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
-# with the date that it took effect, namely 1912-01-01.
+# (see Europe/Lisbon) with the date that it took effect.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1
+Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u
-1:00 - -01 1975
0:00 - GMT
# Kenya
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -588,13 +607,13 @@
# The "mauritius-dst-will-not-repeat" wrapup includes this:
# "The trial ended on March 29, 2009, when the clocks moved back by one hour
# at 2am (or 02:00) local time..."
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mauritius 1982 only - Oct 10 0:00 1:00 S
+Rule Mauritius 1982 only - Oct 10 0:00 1:00 -
Rule Mauritius 1983 only - Mar 21 0:00 0 -
-Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S
+Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 -
Rule Mauritius 2009 only - Mar lastSun 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
4:00 Mauritius +04/+05
# Agalega Is, Rodriguez
@@ -946,10 +965,14 @@
# Notwithstanding the provisions of subsection (2) of section 1, the
# first winter period after the commencement of this Act shall
# commence at OOhOO on Monday 21 March 1994 and shall end at 02h00 on
# Sunday 4 September 1994.
+# From Michael Deckers (2017-04-06):
+# ... both summer and winter time are called "standard"
+# (which differs from the use in Ireland) ...
+
# From Petronella Sibeene (2007-03-30):
# http://allafrica.com/stories/200703300178.html
# While the entire country changes its time, Katima Mulilo and other
# settlements in Caprivi unofficially will not because the sun there
# rises and sets earlier compared to other regions. Chief of
@@ -971,23 +994,46 @@
# https://www.nbc.na/news/na-passes-namibia-time-bill-repealing-1994-namibia-time-act.8665
# We have made the assumption so far that they will change their time zone at
# the same time they would normally start DST, the first Sunday in September:
# https://www.timeanddate.com/news/time/namibia-new-time-zone.html
+# From Paul Eggert (2017-04-09):
+# Before the change, summer and winter time were both standard time legally.
+# However in common parlance, winter time was considered to be DST. See, e.g.:
+# http://www.nbc.na/news/namibias-winter-time-could-be-scrapped.2706
+# https://zone.my.na/news/times-are-changing-in-namibia
+# https://www.newera.com.na/2017/02/23/namibias-winter-time-might-be-repealed/
+# Use plain "WAT" and "CAT" for the time zone abbreviations, to be compatible
+# with Namibia's neighbors.
+
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Namibia 1994 only - Mar 21 0:00 0 -
-Rule Namibia 1994 2016 - Sep Sun>=1 2:00 1:00 S
-Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 -
+# Vanguard section, for zic and other parsers that support negative DST.
+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.
+#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
+# End of rearguard section.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
1:30 - +0130 1903 Mar
2:00 - SAST 1942 Sep 20 2:00
2:00 1:00 SAST 1943 Mar 21 2:00
2:00 - SAST 1990 Mar 21 # independence
- 2:00 - CAT 1994 Mar 21 0:00
- 1:00 Namibia WA%sT 2017 Sep 3 2:00
- 2:00 - CAT
+# 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.
+# 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:
+# http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf
+# 1:00 Namibia %s 2017 Oct 24
+# 2:00 - CAT
+# End of rearguard section.
# Niger
# See Africa/Lagos.
# Nigeria
@@ -1035,19 +1081,21 @@
# on GMT, says the CIA
# Inaccessible, Nightingale: uninhabited
# São Tomé and Príncipe
+# See Europe/Lisbon for info about the 1912 transition.
+
# From Steffen Thorsen (2018-01-08):
# Multiple sources tell that São Tomé changed from UTC to UTC+1 as
# they entered the year 2018.
# From Michael Deckers (2018-01-08):
# 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
Zone Africa/Sao_Tome 0:26:56 - LMT 1884
- -0:36:45 - LMT 1912 # Lisbon Mean Time
+ -0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT
0:00 - GMT 2018 Jan 1 01:00
1:00 - WAT
# Senegal
# See Africa/Abidjan.