From de89db718986a5a98e237b31ad8af84fbd2d3682 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Thu, 28 Jul 2022 16:53:01 -0700 Subject: [PROPOSED] Omit tiny 1906 change in Vietnam MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * asia (Asia/Ho_Chi_Minh): Don’t imply that people changed their clocks by 10 seconds on 1906-07-01, as they surely didn’t. Instead, treat this like Paris, Dublin, etc. Also, don’t use ridiculous overprecision in vanguard mode, as suggested by Steve Allen in: https://mm.icann.org/pipermail/tz/2022-July/031729.html --- asia | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/asia b/asia index 468d2c1c..a35d46dd 100644 --- a/asia +++ b/asia @@ -3903,8 +3903,8 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # The 1906 transition was effective July 1 and standardized Indochina to # Phù Liễn Observatory, legally 104° 17' 17" east of Paris. # It's unclear whether this meant legal Paris Mean Time (00:09:21) or -# the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333..., -# the latter 07:06:29.333..., and for now guess the former, +# the Paris Meridian; for now guess the former and round the exact +# 07:06:30.1333... to 07:06:30.13 as the legal spec used 66 2/3 ms precision. # which is used below even though the modern-day Phù Liễn Observatory # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. # @@ -3931,8 +3931,8 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # NXB Thuận Hoá, Huế, 1995. # Zone NAME STDOFF RULES FORMAT [UNTIL] - #STDOFF 7:06:30.133333333 -Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 + #STDOFF 7:06:30.13 +Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 7:00 - +07 1942 Dec 31 23:00 8:00 - +08 1945 Mar 14 23:00 -- 2.34.1