Thanks, I pushed those three patches into the unofficial development repository at <https://github.com/eggert/tz>. I also pushed the following further patch, which fills in old time stamps for the two new locations, using the transitions specified in Shanks & Pottenger (2003). I don't know when Khandyga switched from Yakutsk to Vladivostok time so I guessed 2004 in this patch.
From 318a6e5dccc592a4f207892a58217f32bb15e405 Mon Sep 17 00:00:00 2001 From: Paul Eggert <eggert@cs.ucla.edu> Date: Sun, 25 Nov 2012 18:57:05 -0800 Subject: [PATCH] Update zones Asia/Khandyga, Asia/Ust-Nera for pre-2004 time.
* europe (Asia/Khandyga, Asia/Ust-Nera): Modify pre-2004 history to agree with Shanks and Pottenger (2003), since we have no better info. --- europe | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/europe b/europe index ac7d8ac..d00582d 100644 --- a/europe +++ b/europe @@ -2043,7 +2043,7 @@ Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct # Russia -# From Alexander Krivenyshev (2011-09-15): +# From Alexander Krivenyshev (2011-09-15): # Based on last Russian Government Decree # 725 on August 31, 2011 # (Government document # <a href="http://www.government.ru/gov/results/16355/print/"> @@ -2345,11 +2345,17 @@ Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15 # From Arthur David Olson (2012-05-09): # Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time # in 2011. - -Zone Asia/Khandyga 9:02:13 - LMT 1922 Nov 15 - 9:00 - VLAT 1930 Jun 21 # Vladivostok Time - 10:00 Russia VLA%sT 1991 Mar 31 2:00s - 9:00 Russia VLA%sST 1992 Jan 19 2:00s +# +# From Paul Eggert (2012-11-25): +# Shanks and Pottenger (2003) has Khandyga on Yakutsk time. +# Make a wild guess that it switched to Vladivostok time in 2004. +# This transition is no doubt wrong, but we have no better info. +# +Zone Asia/Khandyga 9:02:13 - LMT 1919 Dec 15 + 8:00 - YAKT 1930 Jun 21 # Yakutsk Time + 9:00 Russia YAK%sT 1991 Mar 31 2:00s + 8:00 Russia YAK%sT 1992 Jan 19 2:00s + 9:00 Russia YAK%sT 2004 10:00 Russia VLA%sT 2011 Mar 27 2:00s 11:00 - VLAT 2011 Sep 13 0:00s # Decree 725? 10:00 - YAKT @@ -2382,9 +2388,10 @@ Zone Asia/Magadan 10:03:12 - LMT 1924 May 2 # From Arthur David Olson (2012-05-09): # Ojmyakonskij and the Kuril Islands switched from -# Magadan time to Vladivostok time in 2011 -Zone Asia/Ust-Nera 9:32:54 - LMT 1924 May 2 - 10:00 - MAGT 1930 Jun 21 # Magadan Time +# Magadan time to Vladivostok time in 2011. +Zone Asia/Ust-Nera 9:32:54 - LMT 1919 Dec 15 + 8:00 - YAKT 1930 Jun 21 # Yakutsk Time + 9:00 Russia YAKT 1981 Apr 1 11:00 Russia MAG%sT 1991 Mar 31 2:00s 10:00 Russia MAG%sT 1992 Jan 19 2:00s 11:00 Russia MAG%sT 2011 Mar 27 2:00s -- 1.7.9.5