diff options
Diffstat (limited to 'contrib/tzdata/africa')
| -rw-r--r-- | contrib/tzdata/africa | 57 |
1 files changed, 39 insertions, 18 deletions
diff --git a/contrib/tzdata/africa b/contrib/tzdata/africa index 02115ad..2f7217a 100644 --- a/contrib/tzdata/africa +++ b/contrib/tzdata/africa @@ -115,13 +115,13 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01 # 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 @@ -370,15 +370,34 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct # 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 @@ -388,13 +407,13 @@ Zone Africa/Accra -0:00:52 - LMT 1918 # 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 @@ -590,9 +609,9 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920 # 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 @@ -1037,6 +1056,8 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis # 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. @@ -1045,7 +1066,7 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis # 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 |
