--- a/components/timezone/asia Mon Feb 09 23:03:42 2015 -0800
+++ b/components/timezone/asia Tue Feb 10 02:00:16 2015 -0800
@@ -6,20 +6,19 @@
# [email protected] for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2013-08-11):
+# From Paul Eggert (2014-10-31):
#
-# A good source for time zone historical data outside the U.S. is
+# 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.
#
# Gwillim Law writes that a good source
# for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
+# of the IATA's data after 1990. Except where otherwise noted,
+# IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@@ -146,10 +145,7 @@
4:00 Azer AZ%sT
# Bahrain
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
- 4:00 - GST 1972 Jun
- 3:00 - AST
+# See Asia/Qatar.
# Bangladesh
# From Alexander Krivenyshev (2009-05-13):
@@ -1663,52 +1659,76 @@
# Korea (North and South)
# From Annie I. Bang (2006-07-10):
-# http://www.koreaherald.co.kr/SITE/data/html_dir/2006/07/10/200607100012.asp
-# The Ministry of Commerce, Industry and Energy has already
-# commissioned a research project [to reintroduce DST] and has said
-# the system may begin as early as 2008.... Korea ran a daylight
-# saving program from 1949-61 but stopped it during the 1950-53 Korean War.
+# http://www.koreaherald.com/view.php?ud=200607100012
+# Korea ran a daylight saving program from 1949-61 but stopped it
+# during the 1950-53 Korean War. The system was temporarily enforced
+# between 1987 and 1988 ...
-# From Shanks & Pottenger:
+# From Sanghyuk Jung (2014-10-29):
+# http://mm.icann.org/pipermail/tz/2014-October/021830.html
+# According to the Korean Wikipedia
+# http://ko.wikipedia.org/wiki/한국_표준시
+# [oldid=12896437 2014-09-04 08:03 UTC]
+# DST in Republic of Korea was as follows.... And I checked old
+# newspapers in Korean, all articles correspond with data in Wikipedia.
+# For example, the article in 1948 (Korean Language) proved that DST
+# started at June 1 in that year. For another example, the article in
+# 1988 said that DST started at 2:00 AM in that year.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule ROK 1960 only - May 15 0:00 1:00 D
-Rule ROK 1960 only - Sep 13 0:00 0 S
-Rule ROK 1987 1988 - May Sun>=8 0:00 1:00 D
-Rule ROK 1987 1988 - Oct Sun>=8 0:00 0 S
+Rule ROK 1948 only - Jun 1 0:00 1:00 D
+Rule ROK 1948 only - Sep 13 0:00 0 S
+Rule ROK 1949 only - Apr 3 0:00 1:00 D
+Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S
+Rule ROK 1950 only - Apr 1 0:00 1:00 D
+Rule ROK 1951 only - May 6 0:00 1:00 D
+Rule ROK 1955 only - May 5 0:00 1:00 D
+Rule ROK 1955 only - Sep 9 0:00 0 S
+Rule ROK 1956 only - May 20 0:00 1:00 D
+Rule ROK 1956 only - Sep 30 0:00 0 S
+Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
+Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S
+Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
+Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
-# From Paul Eggert (2014-07-01):
-# The following entries are from Shanks & Pottenger, except that I
-# guessed that time zone abbreviations through 1945 followed the same
+# From Paul Eggert (2014-10-30):
+# The Korean Wikipedia entry gives the following sources for UT offsets:
+#
+# 1908: Official Journal Article No. 3994 (Edict No. 5)
+# 1912: Governor-General of Korea Official Gazette Issue No. 367
+# (Announcement No. 338)
+# 1954: Presidential Decree No. 876 (1954-03-17)
+# 1961: Law No. 676 (1961-08-07)
+# 1987: Law No. 3919 (1986-12-31)
+#
+# The Wikipedia entry also has confusing information about a change
+# to UT+9 in April 1910, but then what would be the point of the later change
+# to UT+9 on 1912-01-01? Omit the 1910 change for now.
+#
+# I guessed that time zone abbreviations through 1945 followed the same
# rules as discussed under Taiwan, with nominal switches from JST to KST
# when the respective cities were taken over by the Allies after WWII.
+#
+# For Pyongyang we have no information; guess no changes since World War II.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Seoul 8:27:52 - LMT 1890
- 8:30 - KST 1904 Dec
- 9:00 - JCST 1928
- 8:30 - KST 1932
+Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
+ 8:30 - KST 1912 Jan 1
9:00 - JCST 1937 Oct 1
9:00 - JST 1945 Sep 8
9:00 - KST 1954 Mar 21
- 8:00 ROK K%sT 1961 Aug 10
- 8:30 - KST 1968 Oct
+ 8:30 ROK K%sT 1961 Aug 10
9:00 ROK K%sT
-Zone Asia/Pyongyang 8:23:00 - LMT 1890
- 8:30 - KST 1904 Dec
- 9:00 - JCST 1928
- 8:30 - KST 1932
+Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
+ 8:30 - KST 1912 Jan 1
9:00 - JCST 1937 Oct 1
9:00 - JST 1945 Aug 24
- 9:00 - KST 1954 Mar 21
- 8:00 - KST 1961 Aug 10
9:00 - KST
###############################################################################
# Kuwait
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Kuwait 3:11:56 - LMT 1950
- 3:00 - AST
+# See Asia/Riyadh.
# Laos
# See Asia/Bangkok.
@@ -1929,12 +1949,7 @@
5:45 - NPT # Nepal Time
# Oman
-
-# Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory.
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Muscat 3:54:24 - LMT 1920
- 4:00 - GST
+# See Asia/Dubai.
# Pakistan
@@ -2428,6 +2443,7 @@
Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
4:00 - GST 1972 Jun
3:00 - AST
+Link Asia/Qatar Asia/Bahrain
# Saudi Arabia
#
@@ -2454,6 +2470,8 @@
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
3:00 - AST
+Link Asia/Riyadh Asia/Aden # Yemen
+Link Asia/Riyadh Asia/Kuwait
# Singapore
# taken from Mok Ly Yng (2003-10-30)
@@ -2742,6 +2760,7 @@
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
4:00 - GST
+Link Asia/Dubai Asia/Muscat # Oman
# Uzbekistan
# Byalokoz 1919 says Uzbekistan was 4:27:53.
@@ -2826,10 +2845,4 @@
7:00 - ICT
# Yemen
-
-# Milne says 2:59:54 was the meridian of the saluting battery at Aden,
-# and that Yemen was at 1:55:56, the meridian of the Hagia Sophia.
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Asia/Aden 2:59:54 - LMT 1950
- 3:00 - AST
+# See Asia/Riyadh.