[tz] [PATCH] tzdata: Asia/Ha_Noi: Add new timezone
Paul Eggert
eggert at cs.ucla.edu
Sat Oct 11 18:58:36 UTC 2014
Tim Parenti wrote:
> given this new source of reliable historical data, shouldn't we put that
> somewhere, e.g. in backzone?
Sure, why not? Proposed patch attached.
-------------- next part --------------
From bcb616ca405583de10e6e8c85951720ef066877a Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert at cs.ucla.edu>
Date: Sat, 11 Oct 2014 11:54:38 -0700
Subject: [PROPOSED PATCH] * backzone (Asia/Hanoi): New entry.
(Asia/Phnom_Penh, Asia/Vientiane): Update to be consistent.
---
backzone | 47 +++++++++++++++++++++++++++++++++++++++--------
1 file changed, 39 insertions(+), 8 deletions(-)
diff --git a/backzone b/backzone
index 7bb79f3..70a526f 100644
--- a/backzone
+++ b/backzone
@@ -330,6 +330,20 @@ Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
8:00 PRC C%sT
Link Asia/Chongqing Asia/Chungking
+# Vietnam
+# From Paul Eggert (2014-10-11):
+# See Asia/Ho_Chi_Minh for the source for this data.
+# Trần's book is quoting as saying the 1954-55 transition to 07:00
+# was at the end of October 1954 in Hanoi.
+Zone Asia/Hanoi 7:03:24 - LMT 1906 Jul 1
+ 7:06:30 - PLMT 1911 May 1
+ 7:00 - ICT 1942 Dec 31 23:00
+ 8:00 - IDT 1945 Mar 14 23:00
+ 9:00 - JST 1945 Sep 2
+ 7:00 - ICT 1947 Apr 1
+ 8:00 - IDT 1954 Nov 1
+ 7:00 - ICT
+
# China
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
# Heilongjiang (except Mohe county), Jilin
@@ -354,10 +368,19 @@ Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
#Zone Asia/Panaji [not enough info to complete]
# Cambodia
-Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jun 9
- 7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
- 7:00 - ICT 1912 May
- 8:00 - ICT 1931 May
+# From Paul Eggert (2014-10-11):
+# See Asia/Ho_Chi_Minh for the source for most of this data. Also, guess
+# (1) Cambodia reverted to UT+7 on 1945-09-02, when Vietnam did, and
+# (2) they also reverted to UT+7 on 1953-11-09, the date of independence.
+# These guesses are probably wrong but they're better than guessing no
+# transitions there.
+Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1
+ 7:06:30 - PLMT 1911 May 1
+ 7:00 - ICT 1942 Dec 31 23:00
+ 8:00 - IDT 1945 Mar 14 23:00
+ 9:00 - JST 1945 Sep 2
+ 7:00 - ICT 1947 Apr 1
+ 8:00 - IDT 1953 Nov 9
7:00 - ICT
# Israel
@@ -366,10 +389,18 @@ Zone Asia/Tel_Aviv 2:19:04 - LMT 1880
2:00 Zion I%sT
# Laos
-Zone Asia/Vientiane 6:50:24 - LMT 1906 Jun 9 # or Viangchan
- 7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
- 7:00 - ICT 1912 May
- 8:00 - ICT 1931 May
+# From Paul Eggert (2014-10-11):
+# See Asia/Ho_Chi_Minh for the source for most of this data.
+# Trần's book is quoted as saying that Laos reverted to UT+7 on 1955-04-15.
+# Also, guess that Laos reverted to UT+7 on 1945-09-02, when Vietnam did;
+# this is probably wrong but it's better than guessing no transition.
+Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1
+ 7:06:30 - PLMT 1911 May 1
+ 7:00 - ICT 1942 Dec 31 23:00
+ 8:00 - IDT 1945 Mar 14 23:00
+ 9:00 - JST 1945 Sep 2
+ 7:00 - ICT 1947 Apr 1
+ 8:00 - IDT 1955 Apr 15
7:00 - ICT
# Jan Mayen
--
1.9.1
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