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-rw-r--r--timezone/asia66
1 files changed, 48 insertions, 18 deletions
diff --git a/timezone/asia b/timezone/asia
index 8a167d0149..7f6338923f 100644
--- a/timezone/asia
+++ b/timezone/asia
@@ -1,4 +1,4 @@
-# @(#)asia 7.50
+# @(#)asia 7.51
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
@@ -84,8 +84,7 @@ Zone Asia/Kabul 4:36:48 - LMT 1890
# <edd@AIC.NET> reported (1996-05-04) that Yerevan probably wouldn't use DST
# in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
# Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
-# but started switching at 3:00s in 1998. IATA SSIM (1999-02) reports
-# that they switch one day later in 2001 (i.e. on Mondays).
+# but started switching at 3:00s in 1998.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
3:00 - YERT 1957 Mar # Yerevan Time
@@ -235,8 +234,7 @@ 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 1997 Jul 1 # return to China
- 8:00 PRC C%sT
+ 8:00 HK HK%sT
###############################################################################
@@ -853,31 +851,62 @@ Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
5:00 - MVT # Maldives Time
# Mongolia
+
# Shanks says that Mongolia has three time zones, but usno1995 and the CIA map
# Standard Time Zones of the World (1997-01)
# both say that it has just one.
-# Let's comment out the western and eastern Mongolian time zones
-# till we know what their principal towns are.
+
+# From Oscar van Vlijmen (1999-12-11):
+# <a href="http://www.mongoliatourism.gov.mn/general.htm">
+# General Information Mongolia
+# </a> (1999-09)
+# "Time: Mongolia has two time zones. Three westernmost provinces of
+# Bayan-Ulgii, Uvs, and Hovd are one hour earlier than the capital city, and
+# the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus
+# eight hours."
+
+# From Rives McDow (1999-12-13):
+# Mongolia discontinued the use of daylight savings time in 1999; 1998
+# being the last year it was implemented. The dates of implementation I am
+# unsure of, but most probably it was similar to Russia, except for the time
+# of implementation may have been different....
+# Some maps in the past have indicated that there was an additional time
+# zone in the eastern part of Mongolia, including the provinces of Dornod,
+# Suhbaatar, and possibly Khentij.
+
+# From Paul Eggert (1999-12-15):
+# For now, we'll comment out the east zone (Choybalsan)
+# and use Shanks's and the IATA's data for the daylight-saving rules.
+# Naming and spelling is tricky in Mongolia.
+# We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone;
+# the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us,
+# and sometimes Jirgalanta (with variant spellings), but the name Hovd
+# is good enough for our purposes.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mongol 1981 1984 - Apr 1 0:00 1:00 S
Rule Mongol 1981 1984 - Oct 1 0:00 0 -
Rule Mongol 1985 1990 - Mar lastSun 2:00 1:00 S
Rule Mongol 1985 1990 - Sep lastSun 3:00 0 -
-Rule Mongol 1991 max - Mar lastSun 0:00 1:00 S
+Rule Mongol 1991 1998 - Mar lastSun 0:00 1:00 S
Rule Mongol 1991 1995 - Sep lastSun 0:00 0 -
# IATA SSIM (1996-09) says 1996-10-25; go with Shanks.
Rule Mongol 1996 only - Oct lastSun 0:00 0 -
-Rule Mongol 1997 max - Sep lastSun 0:00 0 -
+Rule Mongol 1997 1998 - Sep lastSun 0:00 0 -
+# IATA SSIM (1999-09) says Mongolia no longer observes DST.
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-#Zone Asia/Dariv 6:14:32 - LMT 1905 Aug
-# 6:00 - DART 1978 # Dariv Time
-# 7:00 Mongol DAR%sT
-Zone Asia/Ulan_Bator 7:07:32 - LMT 1905 Aug
- 7:00 - ULAT 1978 # Ulan Bator Time
+Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
+ 6:00 - HOVT 1978 # Hovd Time
+ 7:00 Mongol HOV%sT
+Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
+ 7:00 - ULAT 1978 # Ulaanbaatar Time
8:00 Mongol ULA%sT
-#Zone Asia/Baruun-Urt 7:33:00 - LMT 1905 Aug
-# 8:00 - BART 1978 # Baruun-Urt Time
-# 9:00 Mongol BAR%sT
+# We're not sure about this entry yet, so we'll omit it for now.
+#Zone Asia/Choybalsan 7:38:00 - LMT 1905 Aug
+# 8:00 - CHOT 1978 # Choybalsan Time
+# 9:00 Mongol CHO%sT 19??
+# 8:00 Mongol ULA%sT
# Nepal
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1097,7 +1126,8 @@ Rule Syria 1993 only - Mar 26 0:00 1:00 S
Rule Syria 1993 only - Sep 25 0:00 0 -
# IATA SSIM (1998-02) says 1998-04-02;
# (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
-# 2000-04-02, and 2001-04-02; ignore all these claims and go with Shanks.
+# 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
+# ignore all these claims and go with Shanks.
Rule Syria 1994 1996 - Apr 1 0:00 1:00 S
Rule Syria 1994 max - Oct 1 0:00 0 -
Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S