52 # Otherwise, these tables typically use numeric abbreviations like +03
53 # and +0330 for integer hour and minute UT offsets. Although earlier
54 # editions invented alphabetic time zone abbreviations for every
55 # offset, this did not reflect common practice.
56 #
57 # See the 'europe' file for Russia and Turkey in Asia.
58
59 # From Guy Harris:
60 # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
61 # additional information from Tom Yap, Sun Microsystems Intercontinental
62 # Technical Support (including a page from the Official Airline Guide -
63 # Worldwide Edition).
64
65 ###############################################################################
66
67 # These rules are stolen from the 'europe' file.
68 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
69 Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
70 Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
71 Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
72 Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
73 Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
74 Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
75 Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
76 Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
77 Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 -
78 Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 S
79 Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 -
80
81 # Afghanistan
82 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
83 Zone Asia/Kabul 4:36:48 - LMT 1890
84 4:00 - +04 1945
85 4:30 - +0430
86
87 # Armenia
88 # From Paul Eggert (2006-03-22):
89 # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
90 # in spring 1991, then to 4:00 with no DST in fall 1995, then
91 # readopting Russian DST in 1997. Go with Shanks & Pottenger, even
92 # when they disagree with others. Edgar Der-Danieliantz
93 # reported (1996-05-04) that Yerevan probably wouldn't use DST
94 # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
95 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
96 # but started switching at 3:00s in 1998.
97
98 # From Arthur David Olson (2011-06-15):
99 # While Russia abandoned DST in 2011, Armenia may choose to
100 # follow Russia's "old" rules.
101
102 # From Alexander Krivenyshev (2012-02-10):
103 # According to News Armenia, on Feb 9, 2012,
104 # http://newsarmenia.ru/society/20120209/42609695.html
105 #
106 # The Armenia National Assembly adopted final reading of Amendments to the
107 # Law "On procedure of calculation time on the territory of the Republic of
108 # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
109 # or
110 # (brief)
111 # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
112 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
113 Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 S
114 Rule Armenia 2011 only - Oct lastSun 2:00s 0 -
115 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
116 Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
117 3:00 - +03 1957 Mar
118 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
119 3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s
120 4:00 - +04 1997
121 4:00 RussiaAsia +04/+05 2011
122 4:00 Armenia +04/+05
123
124 # Azerbaijan
125
126 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
127 # According to the resolution of Cabinet of Ministers, 1997
128 # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
129 # http://code.az/files/daylight_res.pdf
130
131 # From Steffen Thorsen (2016-03-17):
132 # ... the Azerbaijani Cabinet of Ministers has cancelled switching to
133 # daylight saving time....
134 # https://www.azernews.az/azerbaijan/94137.html
135 # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html
136 # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html
137
138 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
139 Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 S
140 Rule Azer 1997 2015 - Oct lastSun 5:00 0 -
141 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
142 Zone Asia/Baku 3:19:24 - LMT 1924 May 2
143 3:00 - +03 1957 Mar
144 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
145 3:00 RussiaAsia +03/+04 1992 Sep lastSun 2:00s
146 4:00 - +04 1996
147 4:00 EUAsia +04/+05 1997
148 4:00 Azer +04/+05
149
150 # Bahrain
151 # See Asia/Qatar.
152
153 # Bangladesh
154 # From Alexander Krivenyshev (2009-05-13):
155 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
156 # Daylight Saving Time from June 16 to Sept 30
157 #
158 # Bangladesh to introduce daylight saving time likely from June 16
159 # http://www.asiantribune.com/?q=node/17288
206 # From Alexander Krivenyshev (2009-12-24):
207 # According to Bangladesh newspaper "The Daily Star,"
208 # Bangladesh will change its clock back to Standard Time on Dec 31, 2009.
209 #
210 # Clock goes back 1-hr on Dec 31 night.
211 # http://www.thedailystar.net/newDesign/news-details.php?nid=119228
212 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html
213 #
214 # "...The government yesterday decided to put the clock back by one hour
215 # on December 31 midnight and the new time will continue until March 31,
216 # 2010 midnight. The decision came at a cabinet meeting at the Prime
217 # Minister's Office last night..."
218
219 # From Alexander Krivenyshev (2010-03-22):
220 # According to Bangladesh newspaper "The Daily Star,"
221 # Cabinet cancels Daylight Saving Time
222 # http://www.thedailystar.net/newDesign/latest_news.php?nid=22817
223 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html
224
225 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
226 Rule Dhaka 2009 only - Jun 19 23:00 1:00 S
227 Rule Dhaka 2009 only - Dec 31 24:00 0 -
228
229 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
230 Zone Asia/Dhaka 6:01:40 - LMT 1890
231 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
232 6:30 - +0630 1942 May 15
233 5:30 - +0530 1942 Sep
234 6:30 - +0630 1951 Sep 30
235 6:00 - +06 2009
236 6:00 Dhaka +06/+07
237
238 # Bhutan
239 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
240 Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
241 5:30 - +0530 1987 Oct
242 6:00 - +06
243
244 # British Indian Ocean Territory
245 # Whitman and the 1995 CIA time zone map say 5:00, but the
246 # 1997 and later maps say 6:00. Assume the switch occurred in 1996.
747 8:00 - CST 1937 Oct 1
748 9:00 - JST 1945 Sep 21 1:00
749 8:00 Taiwan C%sT
750
751 # Macau (Macao, Aomen)
752 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
753 Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 D
754 Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 S
755 Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 D
756 Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 D
757 Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 D
758 Rule Macau 1965 only - Oct 31 0:00 0 S
759 Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 D
760 Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 S
761 Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 D
762 Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 S
763 Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 S
764 Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 D
765 Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 D
766 Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 S
767 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
768 Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
769 8:00 Macau C%sT
770
771
772 ###############################################################################
773
774 # Cyprus
775
776 # Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT.
777 # IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
778
779 # From Paul Eggert (2016-09-09):
780 # Yesterday's Cyprus Mail reports that Northern Cyprus followed Turkey's
781 # lead and switched from +02/+03 to +03 year-round.
782 # http://cyprus-mail.com/2016/09/08/two-time-zones-cyprus-turkey-will-not-turn-clocks-back-next-month/
783 #
784 # From Even Scharning (2016-10-31):
785 # Looks like the time zone split in Cyprus went through last night.
786 # http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/
787
788 # From Paul Eggert (2017-10-18):
1089 #
1090 # From Steffen Thorsen (2006-03-22):
1091 # Several of my users have reported that Iran will not observe DST anymore:
1092 # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
1093 #
1094 # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen:
1095 # ... the Guardian Council ... approved a law on Sunday to re-introduce
1096 # daylight saving time ...
1097 # https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
1098 #
1099 # From Roozbeh Pournader (2007-11-05):
1100 # This is quoted from Official Gazette of the Islamic Republic of
1101 # Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24
1102 # [2007-10-16]. I am doing the best translation I can:...
1103 # The official time of the country will be moved forward for one hour
1104 # on the 24 hours of the first day of the month of Farvardin and will
1105 # be changed back to its previous state on the 24 hours of the
1106 # thirtieth day of Shahrivar.
1107 #
1108 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1109 Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
1110 Rule Iran 1978 only - Oct 21 0:00 0 S
1111 Rule Iran 1979 only - Sep 19 0:00 0 S
1112 Rule Iran 1980 only - Sep 23 0:00 0 S
1113 Rule Iran 1991 only - May 3 0:00 1:00 D
1114 Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
1115 Rule Iran 1991 1995 - Sep 22 0:00 0 S
1116 Rule Iran 1996 only - Mar 21 0:00 1:00 D
1117 Rule Iran 1996 only - Sep 21 0:00 0 S
1118 Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
1119 Rule Iran 1997 1999 - Sep 22 0:00 0 S
1120 Rule Iran 2000 only - Mar 21 0:00 1:00 D
1121 Rule Iran 2000 only - Sep 21 0:00 0 S
1122 Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
1123 Rule Iran 2001 2003 - Sep 22 0:00 0 S
1124 Rule Iran 2004 only - Mar 21 0:00 1:00 D
1125 Rule Iran 2004 only - Sep 21 0:00 0 S
1126 Rule Iran 2005 only - Mar 22 0:00 1:00 D
1127 Rule Iran 2005 only - Sep 22 0:00 0 S
1128 Rule Iran 2008 only - Mar 21 0:00 1:00 D
1129 Rule Iran 2008 only - Sep 21 0:00 0 S
1130 Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
1131 Rule Iran 2009 2011 - Sep 22 0:00 0 S
1132 Rule Iran 2012 only - Mar 21 0:00 1:00 D
1133 Rule Iran 2012 only - Sep 21 0:00 0 S
1134 Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
1135 Rule Iran 2013 2015 - Sep 22 0:00 0 S
1136 Rule Iran 2016 only - Mar 21 0:00 1:00 D
1137 Rule Iran 2016 only - Sep 21 0:00 0 S
1138 Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
1139 Rule Iran 2017 2019 - Sep 22 0:00 0 S
1140 Rule Iran 2020 only - Mar 21 0:00 1:00 D
1141 Rule Iran 2020 only - Sep 21 0:00 0 S
1142 Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
1143 Rule Iran 2021 2023 - Sep 22 0:00 0 S
1144 Rule Iran 2024 only - Mar 21 0:00 1:00 D
1145 Rule Iran 2024 only - Sep 21 0:00 0 S
1146 Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
1147 Rule Iran 2025 2027 - Sep 22 0:00 0 S
1148 Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
1149 Rule Iran 2028 2029 - Sep 21 0:00 0 S
1150 Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
1151 Rule Iran 2030 2031 - Sep 22 0:00 0 S
1152 Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
1153 Rule Iran 2032 2033 - Sep 21 0:00 0 S
1154 Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
1155 Rule Iran 2034 2035 - Sep 22 0:00 0 S
1156 #
1157 # The following rules are approximations starting in the year 2038.
1158 # These are the best post-2037 approximations available, given the
1159 # restrictions of a single rule using a Gregorian-based data format.
1160 # At some point this table will need to be extended, though quite
1161 # possibly Iran will change the rules first.
1162 Rule Iran 2036 max - Mar 21 0:00 1:00 D
1163 Rule Iran 2036 max - Sep 21 0:00 0 S
1164
1165 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1166 Zone Asia/Tehran 3:25:44 - LMT 1916
1167 3:25:44 - TMT 1946 # Tehran Mean Time
1168 3:30 - +0330 1977 Nov
1169 4:00 Iran +04/+05 1979
1170 3:30 Iran +0330/+0430
1171
1172
1173 # Iraq
1174 #
1175 # From Jonathan Lennox (2000-06-12):
1176 # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
1177 # the U.S. edition) on the Iraqi Kurds contains a paragraph:
1178 # "The three northern provinces ... switched their clocks this spring and
1179 # are an hour ahead of Baghdad."
1180 #
1181 # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
1182 # In the past, some Kurdish nationalists, as a protest to the Iraqi
1183 # Government, did not adhere to daylight saving time. They referred
1184 # to daylight saving as Saddam time. But, as of today, the time zone
1185 # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
1186 #
1187 # So we'll ignore the Economist's claim.
1188
1189 # From Steffen Thorsen (2008-03-10):
1190 # The cabinet in Iraq abolished DST last week, according to the following
1191 # news sources (in Arabic):
1192 # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html
1193 # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
1194 #
1195 # We have published a short article in English about the change:
1196 # https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
1197
1198 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1199 Rule Iraq 1982 only - May 1 0:00 1:00 D
1200 Rule Iraq 1982 1984 - Oct 1 0:00 0 S
1201 Rule Iraq 1983 only - Mar 31 0:00 1:00 D
1202 Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
1203 Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
1204 Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
1205 # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo.
1206 # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
1207 #
1208 Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D
1209 Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
1210 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1211 Zone Asia/Baghdad 2:57:40 - LMT 1890
1212 2:57:36 - BMT 1918 # Baghdad Mean Time?
1213 3:00 - +03 1982 May
1214 3:00 Iraq +03/+04
1215
1216
1217 ###############################################################################
1218
1219 # Israel
1220
1221 # From Ephraim Silverberg (2001-01-11):
1222 #
1223 # I coined "IST/IDT" circa 1988. Until then there were three
1224 # different abbreviations in use:
1225 #
1226 # JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
1227 # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
1228 # EEST Eastern Europe Standard Time [used by almost everyone else]
1229 #
1461 # deep hatred of the concept.... The Diet unceremoniously passed a bill to
1462 # dump the unpopular system in October 1951, less than a month after the San
1463 # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
1464 # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
1465 # wanted to keep it.)
1466
1467 # From Takayuki Nikai (2018-01-19):
1468 # The source of information is Japanese law.
1469 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00219480428029.htm
1470 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00719500331039.htm
1471 # ... In summary, it is written as follows. From 24:00 on the first Saturday
1472 # in May, until 0:00 on the day after the second Saturday in September.
1473 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1474 Rule Japan 1948 only - May Sat>=1 24:00 1:00 D
1475 Rule Japan 1948 1951 - Sep Sun>=9 0:00 0 S
1476 Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D
1477 Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D
1478
1479 # From Hideyuki Suzuki (1998-11-09):
1480 # 'Tokyo' usually stands for the former location of Tokyo Astronomical
1481 # Observatory: 139 degrees 44' 40.90" E (9h 18m 58.727s),
1482 # 35 degrees 39' 16.0" N.
1483 # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
1484 # edited by National Astronomical Observatory of Japan....
1485 # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
1486 # The law is enacted on 1886-07-07.
1487
1488 # From Hideyuki Suzuki (1998-11-16):
1489 # The ordinance No. 51 (1886) established "standard time" in Japan,
1490 # which stands for the time on 135 degrees E.
1491 # In the ordinance No. 167 (1895), "standard time" was renamed to "central
1492 # standard time". And the same ordinance also established "western standard
1493 # time", which stands for the time on 120 degrees E.... But "western standard
1494 # time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
1495 # 167, there is no mention regarding for what place western standard time is
1496 # standard....
1497 #
1498 # I wrote "ordinance" above, but I don't know how to translate.
1499 # In Japanese it's "chokurei", which means ordinance from emperor.
1500
1501 # From Yu-Cheng Chuang (2013-07-12):
1502 # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause
1503 # about standard time" ... The adoption began from Jan 1, 1896.
1504 # https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
1505 #
1506 # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
1507 # means the whole Japan territory, including later occupations, adopt Japan
1508 # Central Time (UT+9). The adoption began on Oct 1, 1937.
1509 # 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件
1510
1511 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1512 Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
1513 9:00 Japan J%sT
1886 6:00 - +06 1982 Apr 1
1887 5:00 RussiaAsia +05/+06 1989 Mar 26 2:00s
1888 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s
1889 5:00 RussiaAsia +05/+06 1992 Mar 29 2:00s
1890 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s
1891 5:00 - +05
1892
1893 # Kyrgyzstan (Kirgizstan)
1894 # Transitions through 1991 are from Shanks & Pottenger.
1895
1896 # From Paul Eggert (2005-08-15):
1897 # According to an article dated today in the Kyrgyzstan Development Gateway
1898 # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
1899 # Kyrgyzstan is canceling the daylight saving time system. I take the article
1900 # to mean that they will leave their clocks at 6 hours ahead of UTC.
1901 # From Malik Abdugaliev (2005-09-21):
1902 # Our government cancels daylight saving time 6th of August 2005.
1903 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
1904
1905 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1906 Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
1907 Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
1908 Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 S
1909 Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
1910 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1911 Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
1912 5:00 - +05 1930 Jun 21
1913 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s
1914 5:00 RussiaAsia +05/+06 1991 Aug 31 2:00
1915 5:00 Kyrgyz +05/+06 2005 Aug 12
1916 6:00 - +06
1917
1918 ###############################################################################
1919
1920 # Korea (North and South)
1921
1922 # From Annie I. Bang (2006-07-10):
1923 # http://www.koreaherald.com/view.php?ud=200607100012
1924 # Korea ran a daylight saving program from 1949-61 but stopped it
1925 # during the 1950-53 Korean War. The system was temporarily enforced
1926 # between 1987 and 1988 ...
1927
1928 # From Sanghyuk Jung (2014-10-29):
1966 #
1967 # I guessed that time zone abbreviations through 1945 followed the same
1968 # rules as discussed under Taiwan, with nominal switches from JST to KST
1969 # when the respective cities were taken over by the Allies after WWII.
1970 #
1971 # For Pyongyang, guess no changes from World War II until 2015, as we
1972 # have no information otherwise.
1973
1974 # From Steffen Thorsen (2015-08-07):
1975 # According to many news sources, North Korea is going to change to
1976 # the 8:30 time zone on August 15, one example:
1977 # http://www.bbc.com/news/world-asia-33815049
1978 #
1979 # From Paul Eggert (2015-08-15):
1980 # Bells rang out midnight (00:00) Friday as part of the celebrations. See:
1981 # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
1982 # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
1983 # There is no common English-language abbreviation for this time zone.
1984 # Use KST, as that's what we already use for 1954-1961 in ROK.
1985
1986 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1987 Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
1988 8:30 - KST 1912 Jan 1
1989 9:00 - JST 1945 Sep 8
1990 9:00 - KST 1954 Mar 21
1991 8:30 ROK K%sT 1961 Aug 10
1992 9:00 ROK K%sT
1993 Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
1994 8:30 - KST 1912 Jan 1
1995 9:00 - JST 1945 Aug 24
1996 9:00 - KST 2015 Aug 15 00:00
1997 8:30 - KST
1998
1999 ###############################################################################
2000
2001 # Kuwait
2002 # See Asia/Riyadh.
2003
2004 # Laos
2005 # See Asia/Bangkok.
2006
2007
2008 # Lebanon
2009 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2010 Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
2011 Rule Lebanon 1920 only - Oct 25 0:00 0 -
2012 Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
2013 Rule Lebanon 1921 only - Oct 3 0:00 0 -
2014 Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
2015 Rule Lebanon 1922 only - Oct 8 0:00 0 -
2016 Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
2017 Rule Lebanon 1923 only - Sep 16 0:00 0 -
2020 Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
2021 Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
2022 Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
2023 Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
2024 Rule Lebanon 1978 only - Sep 30 0:00 0 -
2025 Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
2026 Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
2027 Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
2028 Rule Lebanon 1989 only - May 10 0:00 1:00 S
2029 Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
2030 Rule Lebanon 1992 only - Oct 4 0:00 0 -
2031 Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
2032 Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
2033 Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
2034 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2035 Zone Asia/Beirut 2:22:00 - LMT 1880
2036 2:00 Lebanon EE%sT
2037
2038 # Malaysia
2039 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2040 Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
2041 Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
2042 #
2043 # peninsular Malaysia
2044 # taken from Mok Ly Yng (2003-10-30)
2045 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
2046 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2047 Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
2048 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
2049 7:00 - +07 1933 Jan 1
2050 7:00 0:20 +0720 1936 Jan 1
2051 7:20 - +0720 1941 Sep 1
2052 7:30 - +0730 1942 Feb 16
2053 9:00 - +09 1945 Sep 12
2054 7:30 - +0730 1982 Jan 1
2055 8:00 - +08
2056 # Sabah & Sarawak
2057 # From Paul Eggert (2014-08-12):
2058 # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
2059 # and 1982 transition dates are from Mok Ly Yng.
2060 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2165 # about 1:35 - 1:50 hours later in local clock time, no matter the
2166 # direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern
2167 # direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are
2168 # in different time zones (like we know about), while Choibalsan and
2169 # Ulaanbaatar are in the same time zone (correction needed).
2170
2171 # From Arthur David Olson (2008-05-19):
2172 # Assume that Choibalsan is indeed offset by 8:00.
2173 # XXX--in the absence of better information, assume that transition
2174 # was at the start of 2008-03-31 (the day of Steffen Thorsen's report);
2175 # this is almost surely wrong.
2176
2177 # From Ganbold Tsagaankhuu (2015-03-10):
2178 # It seems like yesterday Mongolian Government meeting has concluded to use
2179 # daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of
2180 # March 2015, daylight saving time starts. And 00:00AM of last Saturday of
2181 # September daylight saving time ends. Source:
2182 # http://zasag.mn/news/view/8969
2183
2184 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2185 Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
2186 Rule Mongol 1983 only - Oct 1 0:00 0 -
2187 # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
2188 # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
2189 # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998.
2190 #
2191 # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
2192 # in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place
2193 # at 02:00 standard time, not at 00:00 local time as in the rest of
2194 # the country. That would be odd, and possibly is a result of their
2195 # correction of 02:00 (in the previous edition) not being done correctly
2196 # in the latest edition; so ignore it for now.
2197
2198 # From Ganbold Tsagaankhuu (2017-02-09):
2199 # Mongolian Government meeting has concluded today to cancel daylight
2200 # saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192
2201
2202 Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
2203 Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
2204 # IATA SSIM (1999-09) says Mongolia no longer observes DST.
2205 Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
2206 Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
2207 Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
2208 Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 S
2209 Rule Mongol 2015 2016 - Sep lastSat 0:00 0 -
2210
2211 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2212 # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
2213 Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
2214 6:00 - +06 1978
2215 7:00 Mongol +07/+08
2216 # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
2217 Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
2218 7:00 - +07 1978
2219 8:00 Mongol +08/+09
2220 # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan,
2221 # Choybalsan, Sanbejse, Tchoibalsan
2222 Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
2223 7:00 - +07 1978
2224 8:00 - +08 1983 Apr
2225 9:00 Mongol +09/+10 2008 Mar 31
2226 8:00 Mongol +08/+09
2227
2228 # Nepal
2622 # This source in English, says "that winter time will go into effect
2623 # at midnight on Thursday in the West Bank and Gaza Strip":
2624 # http://english.wafa.ps/index.php?action=detail&id=23246
2625 # official source...:
2626 # http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252
2627
2628 # From Steffen Thorsen (2015-03-03):
2629 # Sources such as http://www.alquds.com/news/article/view/id/548257
2630 # and https://www.raya.ps/ar/news/890705.html say Palestine areas will
2631 # start DST on 2015-03-28 00:00 which is one day later than expected.
2632 #
2633 # From Paul Eggert (2015-03-03):
2634 # https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
2635 # says that the fall 2014 transition was Oct 23 at 24:00.
2636
2637 # From Hannah Kreitem (2016-03-09):
2638 # http://www.palestinecabinet.gov.ps/WebSite/ar/ViewDetails?ID=31728
2639 # [Google translation]: "The Council also decided to start daylight
2640 # saving in Palestine as of one o'clock on Saturday morning,
2641 # 2016-03-26, to provide the clock 60 minutes ahead."
2642 #
2643 # From Paul Eggert (2016-03-12):
2644 # Predict spring transitions on March's last Saturday at 01:00 from now on.
2645
2646 # From Sharef Mustafa (2016-10-19):
2647 # [T]he Palestinian cabinet decision (Mar 8th 2016) published on
2648 # http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf
2649 # states that summer time will end on Oct 29th at 01:00.
2650 #
2651 # From Tim Parenti (2016-10-19):
2652 # Predict fall transitions on October's last Saturday at 01:00 from now on.
2653 # This is consistent with the 2016 transition as well as our spring
2654 # predictions.
2655 #
2656 # From Paul Eggert (2016-10-19):
2657 # It's also consistent with predictions in the following URLs today:
2658 # https://www.timeanddate.com/time/change/gaza-strip/gaza
2659 # https://www.timeanddate.com/time/change/west-bank/hebron
2660
2661 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2662 Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
2663 Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
2664 Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
2665 Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
2666 Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
2667 Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
2668
2669 Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S
2670 Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 -
2671 Rule Palestine 2004 only - Oct 1 1:00 0 -
2672 Rule Palestine 2005 only - Oct 4 2:00 0 -
2673 Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S
2674 Rule Palestine 2006 only - Sep 22 0:00 0 -
2675 Rule Palestine 2007 only - Sep Thu>=8 2:00 0 -
2676 Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S
2677 Rule Palestine 2008 only - Sep 1 0:00 0 -
2678 Rule Palestine 2009 only - Sep Fri>=1 1:00 0 -
2679 Rule Palestine 2010 only - Mar 26 0:00 1:00 S
2680 Rule Palestine 2010 only - Aug 11 0:00 0 -
2681 Rule Palestine 2011 only - Apr 1 0:01 1:00 S
2682 Rule Palestine 2011 only - Aug 1 0:00 0 -
2683 Rule Palestine 2011 only - Aug 30 0:00 1:00 S
2684 Rule Palestine 2011 only - Sep 30 0:00 0 -
2685 Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S
2686 Rule Palestine 2012 only - Sep 21 1:00 0 -
2687 Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
2688 Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 -
2689 Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S
2690 Rule Palestine 2016 max - Mar lastSat 1:00 1:00 S
2691 Rule Palestine 2016 max - Oct lastSat 1:00 0 -
2692
2693 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2694 Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
2695 2:00 Zion EET/EEST 1948 May 15
2696 2:00 EgyptAsia EE%sT 1967 Jun 5
2697 2:00 Zion I%sT 1996
2698 2:00 Jordan EE%sT 1999
2699 2:00 Palestine EE%sT 2008 Aug 29 0:00
2700 2:00 - EET 2008 Sep
2701 2:00 Palestine EE%sT 2010
2702 2:00 - EET 2010 Mar 27 0:01
2703 2:00 Palestine EE%sT 2011 Aug 1
2704 2:00 - EET 2012
2705 2:00 Palestine EE%sT
2706
2707 Zone Asia/Hebron 2:20:23 - LMT 1900 Oct
2708 2:00 Zion EET/EEST 1948 May 15
2709 2:00 EgyptAsia EE%sT 1967 Jun 5
2710 2:00 Zion I%sT 1996
2720 # be immediately followed by 1845-01-01; see R.H. van Gent's
2721 # History of the International Date Line
2722 # https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
2723 # The rest of the data entries are from Shanks & Pottenger.
2724
2725 # From Jesper Nørgaard Welen (2006-04-26):
2726 # ... claims that Philippines had DST last time in 1990:
2727 # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
2728 # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
2729 # but no details]
2730
2731 # From Paul Eggert (2014-08-14):
2732 # The following source says DST may be instituted November-January and again
2733 # March-June, but this is not definite. It also says DST was last proclaimed
2734 # during the Ramos administration (1992-1998); but again, no details.
2735 # Carcamo D. PNoy urged to declare use of daylight saving time.
2736 # Philippine Star 2014-08-05
2737 # http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time
2738
2739 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2740 Rule Phil 1936 only - Nov 1 0:00 1:00 S
2741 Rule Phil 1937 only - Feb 1 0:00 0 -
2742 Rule Phil 1954 only - Apr 12 0:00 1:00 S
2743 Rule Phil 1954 only - Jul 1 0:00 0 -
2744 Rule Phil 1978 only - Mar 22 0:00 1:00 S
2745 Rule Phil 1978 only - Sep 21 0:00 0 -
2746 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2747 Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
2748 8:04:00 - LMT 1899 May 11
2749 8:00 Phil +08/+09 1942 May
2750 9:00 - +09 1944 Nov
2751 8:00 Phil +08/+09
2752
2753 # Qatar
2754 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2755 Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
2756 4:00 - +04 1972 Jun
2757 3:00 - +03
2758 Link Asia/Qatar Asia/Bahrain
2759
2760 # Saudi Arabia
2761 #
2762 # From Paul Eggert (2014-07-15):
2763 # Time in Saudi Arabia and other countries in the Arabian peninsula was not
2764 # standardized until relatively recently; we don't know when, and possibly it
3080 # From Paul Eggert (2014-10-04):
3081 # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
3082 # used in Lower Laos, Cambodia, and Annam. But this is quite a ways
3083 # from Saigon's location. For now, ignore this and stick with Shanks
3084 # and Pottenger for LMT before 1906.
3085
3086 # From Arthur David Olson (2008-03-18):
3087 # The English-language name of Vietnam's most populous city is "Ho Chi Minh
3088 # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
3089
3090 # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
3091 # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
3092 # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
3093 # is quoted verbatim in:
3094 # http://www.thoigian.com.vn/?mPage=P80D01
3095 # is translated by Brian Inglis in:
3096 # https://mm.icann.org/pipermail/tz/2014-October/021654.html
3097 # and is the basis for the information below.
3098 #
3099 # The 1906 transition was effective July 1 and standardized Indochina to
3100 # Phù Liễn Observatory, legally 104 deg. 17'17" east of Paris.
3101 # It's unclear whether this meant legal Paris Mean Time (00:09:21) or
3102 # the Paris Meridian (2 deg. 20'14.03" E); the former yields 07:06:30.1333...
3103 # and the latter 07:06:29.333... so either way it rounds to 07:06:30,
3104 # which is used below even though the modern-day Phù Liễn Observatory
3105 # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT.
3106 #
3107 # The following transitions occurred in Indochina in general (before 1954)
3108 # and in South Vietnam in particular (after 1954):
3109 # To 07:00 on 1911-05-01.
3110 # To 08:00 on 1942-12-31 at 23:00.
3111 # To 09:00 in 1945-03-14 at 23:00.
3112 # To 07:00 on 1945-09-02 in Vietnam.
3113 # To 08:00 on 1947-04-01 in French-controlled Indochina.
3114 # To 07:00 on 1955-07-01 in South Vietnam.
3115 # To 08:00 on 1959-12-31 at 23:00 in South Vietnam.
3116 # To 07:00 on 1975-06-13 in South Vietnam.
3117 #
3118 # Trần cites the following sources; it's unclear which supplied the info above.
3119 #
3120 # Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội,
3121 # No. 9, Paris, February 1982.
3122 #
|
52 # Otherwise, these tables typically use numeric abbreviations like +03
53 # and +0330 for integer hour and minute UT offsets. Although earlier
54 # editions invented alphabetic time zone abbreviations for every
55 # offset, this did not reflect common practice.
56 #
57 # See the 'europe' file for Russia and Turkey in Asia.
58
59 # From Guy Harris:
60 # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
61 # additional information from Tom Yap, Sun Microsystems Intercontinental
62 # Technical Support (including a page from the Official Airline Guide -
63 # Worldwide Edition).
64
65 ###############################################################################
66
67 # These rules are stolen from the 'europe' file.
68 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
69 Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
70 Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
71 Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
72 Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 -
73 Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
74 Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
75 Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 -
76 Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
77 Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 -
78 Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 -
79 Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 -
80
81 # Afghanistan
82 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
83 Zone Asia/Kabul 4:36:48 - LMT 1890
84 4:00 - +04 1945
85 4:30 - +0430
86
87 # Armenia
88 # From Paul Eggert (2006-03-22):
89 # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
90 # in spring 1991, then to 4:00 with no DST in fall 1995, then
91 # readopting Russian DST in 1997. Go with Shanks & Pottenger, even
92 # when they disagree with others. Edgar Der-Danieliantz
93 # reported (1996-05-04) that Yerevan probably wouldn't use DST
94 # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
95 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
96 # but started switching at 3:00s in 1998.
97
98 # From Arthur David Olson (2011-06-15):
99 # While Russia abandoned DST in 2011, Armenia may choose to
100 # follow Russia's "old" rules.
101
102 # From Alexander Krivenyshev (2012-02-10):
103 # According to News Armenia, on Feb 9, 2012,
104 # http://newsarmenia.ru/society/20120209/42609695.html
105 #
106 # The Armenia National Assembly adopted final reading of Amendments to the
107 # Law "On procedure of calculation time on the territory of the Republic of
108 # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
109 # or
110 # (brief)
111 # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
112 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
113 Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 -
114 Rule Armenia 2011 only - Oct lastSun 2:00s 0 -
115 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
116 Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
117 3:00 - +03 1957 Mar
118 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
119 3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s
120 4:00 - +04 1997
121 4:00 RussiaAsia +04/+05 2011
122 4:00 Armenia +04/+05
123
124 # Azerbaijan
125
126 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
127 # According to the resolution of Cabinet of Ministers, 1997
128 # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
129 # http://code.az/files/daylight_res.pdf
130
131 # From Steffen Thorsen (2016-03-17):
132 # ... the Azerbaijani Cabinet of Ministers has cancelled switching to
133 # daylight saving time....
134 # https://www.azernews.az/azerbaijan/94137.html
135 # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html
136 # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html
137
138 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
139 Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 -
140 Rule Azer 1997 2015 - Oct lastSun 5:00 0 -
141 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
142 Zone Asia/Baku 3:19:24 - LMT 1924 May 2
143 3:00 - +03 1957 Mar
144 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s
145 3:00 RussiaAsia +03/+04 1992 Sep lastSun 2:00s
146 4:00 - +04 1996
147 4:00 EUAsia +04/+05 1997
148 4:00 Azer +04/+05
149
150 # Bahrain
151 # See Asia/Qatar.
152
153 # Bangladesh
154 # From Alexander Krivenyshev (2009-05-13):
155 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
156 # Daylight Saving Time from June 16 to Sept 30
157 #
158 # Bangladesh to introduce daylight saving time likely from June 16
159 # http://www.asiantribune.com/?q=node/17288
206 # From Alexander Krivenyshev (2009-12-24):
207 # According to Bangladesh newspaper "The Daily Star,"
208 # Bangladesh will change its clock back to Standard Time on Dec 31, 2009.
209 #
210 # Clock goes back 1-hr on Dec 31 night.
211 # http://www.thedailystar.net/newDesign/news-details.php?nid=119228
212 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html
213 #
214 # "...The government yesterday decided to put the clock back by one hour
215 # on December 31 midnight and the new time will continue until March 31,
216 # 2010 midnight. The decision came at a cabinet meeting at the Prime
217 # Minister's Office last night..."
218
219 # From Alexander Krivenyshev (2010-03-22):
220 # According to Bangladesh newspaper "The Daily Star,"
221 # Cabinet cancels Daylight Saving Time
222 # http://www.thedailystar.net/newDesign/latest_news.php?nid=22817
223 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html
224
225 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
226 Rule Dhaka 2009 only - Jun 19 23:00 1:00 -
227 Rule Dhaka 2009 only - Dec 31 24:00 0 -
228
229 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
230 Zone Asia/Dhaka 6:01:40 - LMT 1890
231 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
232 6:30 - +0630 1942 May 15
233 5:30 - +0530 1942 Sep
234 6:30 - +0630 1951 Sep 30
235 6:00 - +06 2009
236 6:00 Dhaka +06/+07
237
238 # Bhutan
239 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
240 Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
241 5:30 - +0530 1987 Oct
242 6:00 - +06
243
244 # British Indian Ocean Territory
245 # Whitman and the 1995 CIA time zone map say 5:00, but the
246 # 1997 and later maps say 6:00. Assume the switch occurred in 1996.
747 8:00 - CST 1937 Oct 1
748 9:00 - JST 1945 Sep 21 1:00
749 8:00 Taiwan C%sT
750
751 # Macau (Macao, Aomen)
752 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
753 Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 D
754 Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 S
755 Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 D
756 Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 D
757 Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 D
758 Rule Macau 1965 only - Oct 31 0:00 0 S
759 Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 D
760 Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 S
761 Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 D
762 Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 S
763 Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 S
764 Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 D
765 Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 D
766 Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 S
767 # See Europe/Lisbon for info about the 1912 transition.
768 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
769 Zone Asia/Macau 7:34:20 - LMT 1911 Dec 31 16:00u
770 8:00 Macau C%sT
771
772
773 ###############################################################################
774
775 # Cyprus
776
777 # Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT.
778 # IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
779
780 # From Paul Eggert (2016-09-09):
781 # Yesterday's Cyprus Mail reports that Northern Cyprus followed Turkey's
782 # lead and switched from +02/+03 to +03 year-round.
783 # http://cyprus-mail.com/2016/09/08/two-time-zones-cyprus-turkey-will-not-turn-clocks-back-next-month/
784 #
785 # From Even Scharning (2016-10-31):
786 # Looks like the time zone split in Cyprus went through last night.
787 # http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/
788
789 # From Paul Eggert (2017-10-18):
1090 #
1091 # From Steffen Thorsen (2006-03-22):
1092 # Several of my users have reported that Iran will not observe DST anymore:
1093 # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
1094 #
1095 # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen:
1096 # ... the Guardian Council ... approved a law on Sunday to re-introduce
1097 # daylight saving time ...
1098 # https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
1099 #
1100 # From Roozbeh Pournader (2007-11-05):
1101 # This is quoted from Official Gazette of the Islamic Republic of
1102 # Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24
1103 # [2007-10-16]. I am doing the best translation I can:...
1104 # The official time of the country will be moved forward for one hour
1105 # on the 24 hours of the first day of the month of Farvardin and will
1106 # be changed back to its previous state on the 24 hours of the
1107 # thirtieth day of Shahrivar.
1108 #
1109 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1110 Rule Iran 1978 1980 - Mar 21 0:00 1:00 -
1111 Rule Iran 1978 only - Oct 21 0:00 0 -
1112 Rule Iran 1979 only - Sep 19 0:00 0 -
1113 Rule Iran 1980 only - Sep 23 0:00 0 -
1114 Rule Iran 1991 only - May 3 0:00 1:00 -
1115 Rule Iran 1992 1995 - Mar 22 0:00 1:00 -
1116 Rule Iran 1991 1995 - Sep 22 0:00 0 -
1117 Rule Iran 1996 only - Mar 21 0:00 1:00 -
1118 Rule Iran 1996 only - Sep 21 0:00 0 -
1119 Rule Iran 1997 1999 - Mar 22 0:00 1:00 -
1120 Rule Iran 1997 1999 - Sep 22 0:00 0 -
1121 Rule Iran 2000 only - Mar 21 0:00 1:00 -
1122 Rule Iran 2000 only - Sep 21 0:00 0 -
1123 Rule Iran 2001 2003 - Mar 22 0:00 1:00 -
1124 Rule Iran 2001 2003 - Sep 22 0:00 0 -
1125 Rule Iran 2004 only - Mar 21 0:00 1:00 -
1126 Rule Iran 2004 only - Sep 21 0:00 0 -
1127 Rule Iran 2005 only - Mar 22 0:00 1:00 -
1128 Rule Iran 2005 only - Sep 22 0:00 0 -
1129 Rule Iran 2008 only - Mar 21 0:00 1:00 -
1130 Rule Iran 2008 only - Sep 21 0:00 0 -
1131 Rule Iran 2009 2011 - Mar 22 0:00 1:00 -
1132 Rule Iran 2009 2011 - Sep 22 0:00 0 -
1133 Rule Iran 2012 only - Mar 21 0:00 1:00 -
1134 Rule Iran 2012 only - Sep 21 0:00 0 -
1135 Rule Iran 2013 2015 - Mar 22 0:00 1:00 -
1136 Rule Iran 2013 2015 - Sep 22 0:00 0 -
1137 Rule Iran 2016 only - Mar 21 0:00 1:00 -
1138 Rule Iran 2016 only - Sep 21 0:00 0 -
1139 Rule Iran 2017 2019 - Mar 22 0:00 1:00 -
1140 Rule Iran 2017 2019 - Sep 22 0:00 0 -
1141 Rule Iran 2020 only - Mar 21 0:00 1:00 -
1142 Rule Iran 2020 only - Sep 21 0:00 0 -
1143 Rule Iran 2021 2023 - Mar 22 0:00 1:00 -
1144 Rule Iran 2021 2023 - Sep 22 0:00 0 -
1145 Rule Iran 2024 only - Mar 21 0:00 1:00 -
1146 Rule Iran 2024 only - Sep 21 0:00 0 -
1147 Rule Iran 2025 2027 - Mar 22 0:00 1:00 -
1148 Rule Iran 2025 2027 - Sep 22 0:00 0 -
1149 Rule Iran 2028 2029 - Mar 21 0:00 1:00 -
1150 Rule Iran 2028 2029 - Sep 21 0:00 0 -
1151 Rule Iran 2030 2031 - Mar 22 0:00 1:00 -
1152 Rule Iran 2030 2031 - Sep 22 0:00 0 -
1153 Rule Iran 2032 2033 - Mar 21 0:00 1:00 -
1154 Rule Iran 2032 2033 - Sep 21 0:00 0 -
1155 Rule Iran 2034 2035 - Mar 22 0:00 1:00 -
1156 Rule Iran 2034 2035 - Sep 22 0:00 0 -
1157 #
1158 # The following rules are approximations starting in the year 2038.
1159 # These are the best post-2037 approximations available, given the
1160 # restrictions of a single rule using a Gregorian-based data format.
1161 # At some point this table will need to be extended, though quite
1162 # possibly Iran will change the rules first.
1163 Rule Iran 2036 max - Mar 21 0:00 1:00 -
1164 Rule Iran 2036 max - Sep 21 0:00 0 -
1165
1166 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1167 Zone Asia/Tehran 3:25:44 - LMT 1916
1168 3:25:44 - TMT 1946 # Tehran Mean Time
1169 3:30 - +0330 1977 Nov
1170 4:00 Iran +04/+05 1979
1171 3:30 Iran +0330/+0430
1172
1173
1174 # Iraq
1175 #
1176 # From Jonathan Lennox (2000-06-12):
1177 # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
1178 # the U.S. edition) on the Iraqi Kurds contains a paragraph:
1179 # "The three northern provinces ... switched their clocks this spring and
1180 # are an hour ahead of Baghdad."
1181 #
1182 # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
1183 # In the past, some Kurdish nationalists, as a protest to the Iraqi
1184 # Government, did not adhere to daylight saving time. They referred
1185 # to daylight saving as Saddam time. But, as of today, the time zone
1186 # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
1187 #
1188 # So we'll ignore the Economist's claim.
1189
1190 # From Steffen Thorsen (2008-03-10):
1191 # The cabinet in Iraq abolished DST last week, according to the following
1192 # news sources (in Arabic):
1193 # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html
1194 # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
1195 #
1196 # We have published a short article in English about the change:
1197 # https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
1198
1199 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1200 Rule Iraq 1982 only - May 1 0:00 1:00 -
1201 Rule Iraq 1982 1984 - Oct 1 0:00 0 -
1202 Rule Iraq 1983 only - Mar 31 0:00 1:00 -
1203 Rule Iraq 1984 1985 - Apr 1 0:00 1:00 -
1204 Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 -
1205 Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 -
1206 # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo.
1207 # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
1208 #
1209 Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 -
1210 Rule Iraq 1991 2007 - Oct 1 3:00s 0 -
1211 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1212 Zone Asia/Baghdad 2:57:40 - LMT 1890
1213 2:57:36 - BMT 1918 # Baghdad Mean Time?
1214 3:00 - +03 1982 May
1215 3:00 Iraq +03/+04
1216
1217
1218 ###############################################################################
1219
1220 # Israel
1221
1222 # From Ephraim Silverberg (2001-01-11):
1223 #
1224 # I coined "IST/IDT" circa 1988. Until then there were three
1225 # different abbreviations in use:
1226 #
1227 # JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
1228 # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
1229 # EEST Eastern Europe Standard Time [used by almost everyone else]
1230 #
1462 # deep hatred of the concept.... The Diet unceremoniously passed a bill to
1463 # dump the unpopular system in October 1951, less than a month after the San
1464 # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
1465 # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
1466 # wanted to keep it.)
1467
1468 # From Takayuki Nikai (2018-01-19):
1469 # The source of information is Japanese law.
1470 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00219480428029.htm
1471 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00719500331039.htm
1472 # ... In summary, it is written as follows. From 24:00 on the first Saturday
1473 # in May, until 0:00 on the day after the second Saturday in September.
1474 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1475 Rule Japan 1948 only - May Sat>=1 24:00 1:00 D
1476 Rule Japan 1948 1951 - Sep Sun>=9 0:00 0 S
1477 Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D
1478 Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D
1479
1480 # From Hideyuki Suzuki (1998-11-09):
1481 # 'Tokyo' usually stands for the former location of Tokyo Astronomical
1482 # Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N.
1483 # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
1484 # edited by National Astronomical Observatory of Japan....
1485 # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
1486 # The law is enacted on 1886-07-07.
1487
1488 # From Hideyuki Suzuki (1998-11-16):
1489 # The ordinance No. 51 (1886) established "standard time" in Japan,
1490 # which stands for the time on 135° E.
1491 # In the ordinance No. 167 (1895), "standard time" was renamed to "central
1492 # standard time". And the same ordinance also established "western standard
1493 # time", which stands for the time on 120° E.... But "western standard
1494 # time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
1495 # 167, there is no mention regarding for what place western standard time is
1496 # standard....
1497 #
1498 # I wrote "ordinance" above, but I don't know how to translate.
1499 # In Japanese it's "chokurei", which means ordinance from emperor.
1500
1501 # From Yu-Cheng Chuang (2013-07-12):
1502 # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause
1503 # about standard time" ... The adoption began from Jan 1, 1896.
1504 # https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時)
1505 #
1506 # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
1507 # means the whole Japan territory, including later occupations, adopt Japan
1508 # Central Time (UT+9). The adoption began on Oct 1, 1937.
1509 # 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件
1510
1511 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1512 Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
1513 9:00 Japan J%sT
1886 6:00 - +06 1982 Apr 1
1887 5:00 RussiaAsia +05/+06 1989 Mar 26 2:00s
1888 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s
1889 5:00 RussiaAsia +05/+06 1992 Mar 29 2:00s
1890 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s
1891 5:00 - +05
1892
1893 # Kyrgyzstan (Kirgizstan)
1894 # Transitions through 1991 are from Shanks & Pottenger.
1895
1896 # From Paul Eggert (2005-08-15):
1897 # According to an article dated today in the Kyrgyzstan Development Gateway
1898 # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
1899 # Kyrgyzstan is canceling the daylight saving time system. I take the article
1900 # to mean that they will leave their clocks at 6 hours ahead of UTC.
1901 # From Malik Abdugaliev (2005-09-21):
1902 # Our government cancels daylight saving time 6th of August 2005.
1903 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
1904
1905 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1906 Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 -
1907 Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
1908 Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 -
1909 Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
1910 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1911 Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
1912 5:00 - +05 1930 Jun 21
1913 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s
1914 5:00 RussiaAsia +05/+06 1991 Aug 31 2:00
1915 5:00 Kyrgyz +05/+06 2005 Aug 12
1916 6:00 - +06
1917
1918 ###############################################################################
1919
1920 # Korea (North and South)
1921
1922 # From Annie I. Bang (2006-07-10):
1923 # http://www.koreaherald.com/view.php?ud=200607100012
1924 # Korea ran a daylight saving program from 1949-61 but stopped it
1925 # during the 1950-53 Korean War. The system was temporarily enforced
1926 # between 1987 and 1988 ...
1927
1928 # From Sanghyuk Jung (2014-10-29):
1966 #
1967 # I guessed that time zone abbreviations through 1945 followed the same
1968 # rules as discussed under Taiwan, with nominal switches from JST to KST
1969 # when the respective cities were taken over by the Allies after WWII.
1970 #
1971 # For Pyongyang, guess no changes from World War II until 2015, as we
1972 # have no information otherwise.
1973
1974 # From Steffen Thorsen (2015-08-07):
1975 # According to many news sources, North Korea is going to change to
1976 # the 8:30 time zone on August 15, one example:
1977 # http://www.bbc.com/news/world-asia-33815049
1978 #
1979 # From Paul Eggert (2015-08-15):
1980 # Bells rang out midnight (00:00) Friday as part of the celebrations. See:
1981 # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
1982 # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
1983 # There is no common English-language abbreviation for this time zone.
1984 # Use KST, as that's what we already use for 1954-1961 in ROK.
1985
1986 # From Kang Seonghoon (2018-04-29):
1987 # North Korea will revert its time zone from UTC+8:30 (PYT; Pyongyang
1988 # Time) back to UTC+9 (KST; Korea Standard Time).
1989 #
1990 # From Seo Sanghyeon (2018-04-30):
1991 # Rodong Sinmun 2018-04-30 announced Pyongyang Time transition plan.
1992 # https://www.nknews.org/kcna/wp-content/uploads/sites/5/2018/04/rodong-2018-04-30.pdf
1993 # ... the transition date is 2018-05-05 ... Citation should be Decree
1994 # No. 2232 of April 30, 2018, of the Presidium of the Supreme People's
1995 # Assembly, as published in Rodong Sinmun.
1996 # From Tim Parenti (2018-04-29):
1997 # It appears to be the front page story at the top in the right-most column.
1998
1999 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2000 Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
2001 8:30 - KST 1912 Jan 1
2002 9:00 - JST 1945 Sep 8
2003 9:00 - KST 1954 Mar 21
2004 8:30 ROK K%sT 1961 Aug 10
2005 9:00 ROK K%sT
2006 Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
2007 8:30 - KST 1912 Jan 1
2008 9:00 - JST 1945 Aug 24
2009 9:00 - KST 2015 Aug 15 00:00
2010 8:30 - KST 2018 May 5
2011 9:00 - KST
2012
2013 ###############################################################################
2014
2015 # Kuwait
2016 # See Asia/Riyadh.
2017
2018 # Laos
2019 # See Asia/Bangkok.
2020
2021
2022 # Lebanon
2023 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2024 Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
2025 Rule Lebanon 1920 only - Oct 25 0:00 0 -
2026 Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
2027 Rule Lebanon 1921 only - Oct 3 0:00 0 -
2028 Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
2029 Rule Lebanon 1922 only - Oct 8 0:00 0 -
2030 Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
2031 Rule Lebanon 1923 only - Sep 16 0:00 0 -
2034 Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
2035 Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
2036 Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
2037 Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
2038 Rule Lebanon 1978 only - Sep 30 0:00 0 -
2039 Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
2040 Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
2041 Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
2042 Rule Lebanon 1989 only - May 10 0:00 1:00 S
2043 Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
2044 Rule Lebanon 1992 only - Oct 4 0:00 0 -
2045 Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
2046 Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
2047 Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
2048 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2049 Zone Asia/Beirut 2:22:00 - LMT 1880
2050 2:00 Lebanon EE%sT
2051
2052 # Malaysia
2053 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2054 Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 -
2055 Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
2056 #
2057 # peninsular Malaysia
2058 # taken from Mok Ly Yng (2003-10-30)
2059 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
2060 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2061 Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
2062 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
2063 7:00 - +07 1933 Jan 1
2064 7:00 0:20 +0720 1936 Jan 1
2065 7:20 - +0720 1941 Sep 1
2066 7:30 - +0730 1942 Feb 16
2067 9:00 - +09 1945 Sep 12
2068 7:30 - +0730 1982 Jan 1
2069 8:00 - +08
2070 # Sabah & Sarawak
2071 # From Paul Eggert (2014-08-12):
2072 # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
2073 # and 1982 transition dates are from Mok Ly Yng.
2074 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2179 # about 1:35 - 1:50 hours later in local clock time, no matter the
2180 # direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern
2181 # direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are
2182 # in different time zones (like we know about), while Choibalsan and
2183 # Ulaanbaatar are in the same time zone (correction needed).
2184
2185 # From Arthur David Olson (2008-05-19):
2186 # Assume that Choibalsan is indeed offset by 8:00.
2187 # XXX--in the absence of better information, assume that transition
2188 # was at the start of 2008-03-31 (the day of Steffen Thorsen's report);
2189 # this is almost surely wrong.
2190
2191 # From Ganbold Tsagaankhuu (2015-03-10):
2192 # It seems like yesterday Mongolian Government meeting has concluded to use
2193 # daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of
2194 # March 2015, daylight saving time starts. And 00:00AM of last Saturday of
2195 # September daylight saving time ends. Source:
2196 # http://zasag.mn/news/view/8969
2197
2198 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2199 Rule Mongol 1983 1984 - Apr 1 0:00 1:00 -
2200 Rule Mongol 1983 only - Oct 1 0:00 0 -
2201 # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
2202 # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
2203 # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998.
2204 #
2205 # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
2206 # in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place
2207 # at 02:00 standard time, not at 00:00 local time as in the rest of
2208 # the country. That would be odd, and possibly is a result of their
2209 # correction of 02:00 (in the previous edition) not being done correctly
2210 # in the latest edition; so ignore it for now.
2211
2212 # From Ganbold Tsagaankhuu (2017-02-09):
2213 # Mongolian Government meeting has concluded today to cancel daylight
2214 # saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192
2215
2216 Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 -
2217 Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
2218 # IATA SSIM (1999-09) says Mongolia no longer observes DST.
2219 Rule Mongol 2001 only - Apr lastSat 2:00 1:00 -
2220 Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
2221 Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 -
2222 Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 -
2223 Rule Mongol 2015 2016 - Sep lastSat 0:00 0 -
2224
2225 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2226 # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
2227 Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
2228 6:00 - +06 1978
2229 7:00 Mongol +07/+08
2230 # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
2231 Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
2232 7:00 - +07 1978
2233 8:00 Mongol +08/+09
2234 # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan,
2235 # Choybalsan, Sanbejse, Tchoibalsan
2236 Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
2237 7:00 - +07 1978
2238 8:00 - +08 1983 Apr
2239 9:00 Mongol +09/+10 2008 Mar 31
2240 8:00 Mongol +08/+09
2241
2242 # Nepal
2636 # This source in English, says "that winter time will go into effect
2637 # at midnight on Thursday in the West Bank and Gaza Strip":
2638 # http://english.wafa.ps/index.php?action=detail&id=23246
2639 # official source...:
2640 # http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252
2641
2642 # From Steffen Thorsen (2015-03-03):
2643 # Sources such as http://www.alquds.com/news/article/view/id/548257
2644 # and https://www.raya.ps/ar/news/890705.html say Palestine areas will
2645 # start DST on 2015-03-28 00:00 which is one day later than expected.
2646 #
2647 # From Paul Eggert (2015-03-03):
2648 # https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014
2649 # says that the fall 2014 transition was Oct 23 at 24:00.
2650
2651 # From Hannah Kreitem (2016-03-09):
2652 # http://www.palestinecabinet.gov.ps/WebSite/ar/ViewDetails?ID=31728
2653 # [Google translation]: "The Council also decided to start daylight
2654 # saving in Palestine as of one o'clock on Saturday morning,
2655 # 2016-03-26, to provide the clock 60 minutes ahead."
2656
2657 # From Sharef Mustafa (2016-10-19):
2658 # [T]he Palestinian cabinet decision (Mar 8th 2016) published on
2659 # http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf
2660 # states that summer time will end on Oct 29th at 01:00.
2661 #
2662 # From Tim Parenti (2016-10-19):
2663 # Predict fall transitions on October's last Saturday at 01:00 from now on.
2664 # This is consistent with the 2016 transition as well as our spring
2665 # predictions.
2666 #
2667 # From Paul Eggert (2016-10-19):
2668 # It's also consistent with predictions in the following URLs today:
2669 # https://www.timeanddate.com/time/change/gaza-strip/gaza
2670 # https://www.timeanddate.com/time/change/west-bank/hebron
2671
2672 # From Sharef Mustafa (2018-03-16):
2673 # Palestine summer time will start on Mar 24th 2018 by advancing the
2674 # clock by 60 minutes as per Palestinian cabinet decision published on
2675 # the official website, though the decree did not specify the exact
2676 # time of the time shift.
2677 # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817
2678 #
2679 # From Paul Eggert (2018-03-16):
2680 # For 2016 on, predict spring transitions on March's fourth Saturday at 01:00.
2681
2682 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2683 Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
2684 Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
2685 Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
2686 Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
2687 Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
2688 Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
2689
2690 Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S
2691 Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 -
2692 Rule Palestine 2004 only - Oct 1 1:00 0 -
2693 Rule Palestine 2005 only - Oct 4 2:00 0 -
2694 Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S
2695 Rule Palestine 2006 only - Sep 22 0:00 0 -
2696 Rule Palestine 2007 only - Sep Thu>=8 2:00 0 -
2697 Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S
2698 Rule Palestine 2008 only - Sep 1 0:00 0 -
2699 Rule Palestine 2009 only - Sep Fri>=1 1:00 0 -
2700 Rule Palestine 2010 only - Mar 26 0:00 1:00 S
2701 Rule Palestine 2010 only - Aug 11 0:00 0 -
2702 Rule Palestine 2011 only - Apr 1 0:01 1:00 S
2703 Rule Palestine 2011 only - Aug 1 0:00 0 -
2704 Rule Palestine 2011 only - Aug 30 0:00 1:00 S
2705 Rule Palestine 2011 only - Sep 30 0:00 0 -
2706 Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S
2707 Rule Palestine 2012 only - Sep 21 1:00 0 -
2708 Rule Palestine 2013 only - Sep Fri>=21 0:00 0 -
2709 Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 -
2710 Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S
2711 Rule Palestine 2016 max - Mar Sat>=22 1:00 1:00 S
2712 Rule Palestine 2016 max - Oct lastSat 1:00 0 -
2713
2714 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2715 Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
2716 2:00 Zion EET/EEST 1948 May 15
2717 2:00 EgyptAsia EE%sT 1967 Jun 5
2718 2:00 Zion I%sT 1996
2719 2:00 Jordan EE%sT 1999
2720 2:00 Palestine EE%sT 2008 Aug 29 0:00
2721 2:00 - EET 2008 Sep
2722 2:00 Palestine EE%sT 2010
2723 2:00 - EET 2010 Mar 27 0:01
2724 2:00 Palestine EE%sT 2011 Aug 1
2725 2:00 - EET 2012
2726 2:00 Palestine EE%sT
2727
2728 Zone Asia/Hebron 2:20:23 - LMT 1900 Oct
2729 2:00 Zion EET/EEST 1948 May 15
2730 2:00 EgyptAsia EE%sT 1967 Jun 5
2731 2:00 Zion I%sT 1996
2741 # be immediately followed by 1845-01-01; see R.H. van Gent's
2742 # History of the International Date Line
2743 # https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm
2744 # The rest of the data entries are from Shanks & Pottenger.
2745
2746 # From Jesper Nørgaard Welen (2006-04-26):
2747 # ... claims that Philippines had DST last time in 1990:
2748 # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
2749 # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
2750 # but no details]
2751
2752 # From Paul Eggert (2014-08-14):
2753 # The following source says DST may be instituted November-January and again
2754 # March-June, but this is not definite. It also says DST was last proclaimed
2755 # during the Ramos administration (1992-1998); but again, no details.
2756 # Carcamo D. PNoy urged to declare use of daylight saving time.
2757 # Philippine Star 2014-08-05
2758 # http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time
2759
2760 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2761 Rule Phil 1936 only - Nov 1 0:00 1:00 -
2762 Rule Phil 1937 only - Feb 1 0:00 0 -
2763 Rule Phil 1954 only - Apr 12 0:00 1:00 -
2764 Rule Phil 1954 only - Jul 1 0:00 0 -
2765 Rule Phil 1978 only - Mar 22 0:00 1:00 -
2766 Rule Phil 1978 only - Sep 21 0:00 0 -
2767 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2768 Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
2769 8:04:00 - LMT 1899 May 11
2770 8:00 Phil +08/+09 1942 May
2771 9:00 - +09 1944 Nov
2772 8:00 Phil +08/+09
2773
2774 # Qatar
2775 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2776 Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
2777 4:00 - +04 1972 Jun
2778 3:00 - +03
2779 Link Asia/Qatar Asia/Bahrain
2780
2781 # Saudi Arabia
2782 #
2783 # From Paul Eggert (2014-07-15):
2784 # Time in Saudi Arabia and other countries in the Arabian peninsula was not
2785 # standardized until relatively recently; we don't know when, and possibly it
3101 # From Paul Eggert (2014-10-04):
3102 # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
3103 # used in Lower Laos, Cambodia, and Annam. But this is quite a ways
3104 # from Saigon's location. For now, ignore this and stick with Shanks
3105 # and Pottenger for LMT before 1906.
3106
3107 # From Arthur David Olson (2008-03-18):
3108 # The English-language name of Vietnam's most populous city is "Ho Chi Minh
3109 # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
3110
3111 # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
3112 # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
3113 # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
3114 # is quoted verbatim in:
3115 # http://www.thoigian.com.vn/?mPage=P80D01
3116 # is translated by Brian Inglis in:
3117 # https://mm.icann.org/pipermail/tz/2014-October/021654.html
3118 # and is the basis for the information below.
3119 #
3120 # The 1906 transition was effective July 1 and standardized Indochina to
3121 # Phù Liễn Observatory, legally 104° 17' 17" east of Paris.
3122 # It's unclear whether this meant legal Paris Mean Time (00:09:21) or
3123 # the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333...
3124 # and the latter 07:06:29.333... so either way it rounds to 07:06:30,
3125 # which is used below even though the modern-day Phù Liễn Observatory
3126 # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT.
3127 #
3128 # The following transitions occurred in Indochina in general (before 1954)
3129 # and in South Vietnam in particular (after 1954):
3130 # To 07:00 on 1911-05-01.
3131 # To 08:00 on 1942-12-31 at 23:00.
3132 # To 09:00 in 1945-03-14 at 23:00.
3133 # To 07:00 on 1945-09-02 in Vietnam.
3134 # To 08:00 on 1947-04-01 in French-controlled Indochina.
3135 # To 07:00 on 1955-07-01 in South Vietnam.
3136 # To 08:00 on 1959-12-31 at 23:00 in South Vietnam.
3137 # To 07:00 on 1975-06-13 in South Vietnam.
3138 #
3139 # Trần cites the following sources; it's unclear which supplied the info above.
3140 #
3141 # Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội,
3142 # No. 9, Paris, February 1982.
3143 #
|