Chinese timezones do not observe DST
Pulbere, Alexandru
Alexandru.Pulbere at cognos.com
Thu Aug 5 22:56:02 UTC 2004
I noticed that the timezone description for chinese timezones use DST.
Aparently the chinese governament stopped using DST in 1992.
To fix the problem I changed my copy asia file and regenerated ICU4J
resources (my copy).
# China
# From Guy Harris:
# People's Republic of China. Yes, they really have only one time zone.
# From Bob Devine (1988-01-28):
# No they don't. See TIME mag, 1986-02-17 p.52. Even though
# China is across 4 physical time zones, before Feb 1, 1986 only the
# Peking (Bejing) time zone was recognized. Since that date, China
# has two of 'em -- Peking's and Urumqi (named after the capital of
# the Xinjiang Uyghur Autonomous Region). I don't know about DST for
it.
#
# . . .I just deleted the DST table and this editor makes it too
# painful to suck in another copy.. So, here is what I have for
# DST start/end dates for Peking's time zone (info from AP):
#
# 1986 May 4 - Sept 14
# 1987 mid-April - ??
# From U. S. Naval Observatory (1989-01-19):
# CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
# CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
# From Paul Eggert <eggert at twinsun.com> (1995-12-19):
# Shanks writes that China has had a single time zone since 1980 May 1,
# observing summer DST from 1986 through 1991; this contradicts Devine's
# note about Time magazine, though apparently _something_ happened in
1986.
# Go with Shanks for now. I made up names for the other pre-1980 time
zones.
# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE
LETTER/S
Rule Shang 1940 only - Jun 3 0:00 1:00
D
Rule Shang 1940 1941 - Oct 1 0:00 0
S
Rule Shang 1941 only - Mar 16 0:00 1:00
D
Rule PRC 1949 only - Jan 1 0:00 0
S
Rule PRC 1986 only - May 4 0:00 1:00
D
Rule PRC 1986 1991 - Sep Sun>=11 0:00 0
S
Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00
D
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
#
# From Anthony Fok (2001-12-20):
# BTW, I did some research on-line and found some info regarding these
five
# historic timezones from some Taiwan websites. And yes, there are
official
# Chinese names for these locales (before 1949):
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
8:30 - CHAT 1932 Mar # Changbai Time
8:00 - CST 1940
9:00 - CHAT 1966 May
8:30 - CHAT 1980 May
8:00 PRC C%sT 1992
8:00 - CST
# Zhongyuan Time ("Central plain Time")
Zone Asia/Shanghai 8:05:52 - LMT 1928
8:00 Shang C%sT 1949
8:00 PRC C%sT 1992
8:00 - CST
# Long-shu Time (probably due to Long and Shu being two names of that
area)
Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
7:00 - LONT 1980 May # Long-shu Time
8:00 PRC C%sT 1992
8:00 - CST
# Xin-zang Time ("Xinjiang-Tibet Time")
Zone Asia/Urumqi 5:50:20 - LMT 1928 # or Urumchi
6:00 - URUT 1980 May # Urumqi Time
8:00 PRC C%sT 1992
8:00 - CST
# Kunlun Time
Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or
Kaxgar
5:30 - KAST 1940 # Kashgar Time
5:00 - KAST 1980 May
8:00 PRC C%sT 1992
8:00 - CST
# Hong Kong (Xianggang)
# Rule NAME FROM TO TYPE IN ON AT SAVE
LETTER/S
Rule HK 1946 only - Apr 20 3:30 1:00
S
Rule HK 1946 only - Dec 1 3:30 0
-
Rule HK 1947 only - Apr 13 3:30 1:00
S
Rule HK 1947 only - Dec 30 3:30 0
-
Rule HK 1948 only - May 2 3:30 1:00
S
Rule HK 1948 1952 - Oct lastSun 3:30 0
-
Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00
S
Rule HK 1953 only - Nov 1 3:30 0
-
Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00
S
Rule HK 1954 only - Oct 31 3:30 0
-
Rule HK 1955 1964 - Nov Sun>=1 3:30 0
-
Rule HK 1965 1977 - Apr Sun>=16 3:30 1:00
S
Rule HK 1965 1977 - Oct Sun>=16 3:30 0
-
Rule HK 1979 1980 - May Sun>=8 3:30 1:00
S
Rule HK 1979 1980 - Oct Sun>=16 3:30 0
-
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Hong_Kong 7:36:36 - LMT 1904 Oct 30
8:00 HK HK%sT 2002
8:00 - CST
########################################################################
#######
# Taiwan
# Shanks writes that Taiwan observed DST during 1945, when it
# was still controlled by Japan. This is hard to believe, but we don't
# have any other information.
# Rule NAME FROM TO TYPE IN ON AT SAVE
LETTER/S
Rule Taiwan 1945 1951 - May 1 0:00 1:00
D
Rule Taiwan 1945 1951 - Oct 1 0:00 0
S
Rule Taiwan 1952 only - Mar 1 0:00 1:00
D
Rule Taiwan 1952 1954 - Nov 1 0:00 0
S
Rule Taiwan 1953 1959 - Apr 1 0:00 1:00
D
Rule Taiwan 1955 1961 - Oct 1 0:00 0
S
Rule Taiwan 1960 1961 - Jun 1 0:00 1:00
D
Rule Taiwan 1974 1975 - Apr 1 0:00 1:00
D
Rule Taiwan 1974 1975 - Oct 1 0:00 0
S
Rule Taiwan 1980 only - Jun 30 0:00 1:00
D
Rule Taiwan 1980 only - Sep 30 0:00 0
S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Taipei 8:06:00 - LMT 1896 # or Taibei or
T'ai-pei
8:00 Taiwan C%sT 1992
8:00 - CST
# Macau (Macao, Aomen)
# Rule NAME FROM TO TYPE IN ON AT SAVE
LETTER/S
Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00
S
Rule Macau 1961 1964 - Nov Sun>=1 3:30 0
-
Rule Macau 1963 only - Mar Sun>=16 0:00 1:00
S
Rule Macau 1964 only - Mar Sun>=16 3:30 1:00
S
Rule Macau 1965 only - Mar Sun>=16 0:00 1:00
S
Rule Macau 1965 only - Oct 31 0:00 0
-
Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00
S
Rule Macau 1966 1971 - Oct Sun>=16 3:30 0
-
Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00
S
Rule Macau 1972 1973 - Oct Sun>=15 0:00 0
-
Rule Macau 1974 1977 - Oct Sun>=15 3:30 0
-
Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00
S
Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00
S
Rule Macau 1978 1980 - Oct Sun>=15 0:00 0
-
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Macau 7:34:20 - LMT 1912
8:00 Macau MO%sT 1999 Dec 20 # return to
China
8:00 - CST
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