[tz] [PATCH 4/5] Zone splits for the proposed Russian change on 2014-10-26
Paul Eggert
eggert at cs.ucla.edu
Tue Jul 8 05:26:54 UTC 2014
From: Tim Parenti <tim at timtimeonline.com>
Also, a historical split.
* europe: Add commentary describing proposed future zones Asia/Chita and
Asia/Srednekolymsk, as well as proposed historical split Asia/Tiksi.
* NEWS: Document this.
---
NEWS | 9 ++++-
europe | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++--------------
2 files changed, 115 insertions(+), 29 deletions(-)
diff --git a/NEWS b/NEWS
index 433ab12..1f105ac 100644
--- a/NEWS
+++ b/NEWS
@@ -11,7 +11,14 @@ Unreleased, experimental changes
Asia/Novosibirsk, Asia/Krasnoyarsk, Asia/Irkutsk, Asia/Yakutsk,
Asia/Vladivostok, Asia/Khandyga, Asia/Sakhalin, and Asia/Ust-Nera.
Asia/Magadan will have two hours subtracted. Asia/Novokuznetsk's time
- zone abbreviation is affected, but not its UTC offset.
+ zone abbreviation is affected, but not its UTC offset. It appears that
+ two new zones will be needed soon: Asia/Chita (split from Asia/Yakutsk,
+ and also with two hours subtracted) and Asia/Srednekolymsk (split from
+ Asia/Magadan, but with only one hour subtracted). (Thanks to Tim Parenti
+ for pointing out the need for the latter zone.) Additionally, a new zone
+ Asia/Tiksi (split from Asia/Vladivostok) will be needed to fix some history
+ before 2011. (Thanks to Tim Parenti.) All three of these new zones will
+ be deferred until the change is official; for now they are commented out.
Changes affecting time zone abbreviations
diff --git a/europe b/europe
index 1407bb9..5c52723 100644
--- a/europe
+++ b/europe
@@ -2460,10 +2460,33 @@ Zone Asia/Irkutsk 6:57:20 - LMT 1880
8:00 - IRKT
+# From Tim Parenti (2014-07-06):
+# Asia/Chita covers...
+# 92 RU-ZAB Zabaykalsky Krai
+#
+# Note: Effective 2008-03-01, (75) Chita Oblast and (80) Agin-Buryat
+# Autonomous Okrug merged to form (92, RU-ZAB) Zabaykalsky Krai.
+
+# From Paul Eggert (2014-07-01):
+# http://en.itar-tass.com/russia/738562 implies [Zabaykalsky Krai] will move to
+# UTC+8 on 2014-10-26.
+
+# [This zone is commented out for now, as the 2014 change is not yet official;
+# use Asia/Yakutsk in the meantime.]
+# The zone.tab line will be:
+# RU +5203+11328 Asia/Chita Moscow+05 - Zabaykalsky
+#Zone Asia/Chita 7:33:52 - 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 2011 Mar 27 2:00s
+# 10:00 - YAKT 2014 Oct 26 2:00s
+# 8:00 - IRKT
+
+
# From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
# Asia/Yakutsk covers...
# 28 RU-AMU Amur Oblast
-# 92 RU-ZAB Zabaykalsky Krai
#
# ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
# 14-02 **** Aldansky District
@@ -2488,20 +2511,12 @@ Zone Asia/Irkutsk 6:57:20 - LMT 1880
# 14-32 **** Khangalassky District
# 14-33 **** Churapchinsky District
# 14-34 **** Eveno-Bytantaysky National District
-#
-# Note: Effective 2008-03-01, (75) Chita Oblast and (80) Agin-Buryat
-# Autonomous Okrug merged to form (92, RU-ZAB) Zabaykalsky Krai.
# From Tim Parenti (2014-07-03):
# Our commentary seems to have lost mention of (14-19) Neryungrinsky District.
# Since the surrounding districts of Sakha are all YAKT, assume this is, too.
# Also assume its history has been the same as the rest of Asia/Yakutsk.
-# From Paul Eggert (2014-07-01):
-# Perhaps Zabajkal'skij kraj needs a separate entry?
-# http://en.itar-tass.com/russia/738562 implies it will move to UTC+8
-# on 2014-10-26.
-
Zone Asia/Yakutsk 8:38:40 - LMT 1919 Dec 15
8:00 - YAKT 1930 Jun 21 # Yakutsk Time
9:00 Russia YAK%sT 1991 Mar 31 2:00s
@@ -2518,17 +2533,9 @@ Zone Asia/Yakutsk 8:38:40 - LMT 1919 Dec 15
# 79 RU-YEV Jewish Autonomous Oblast
#
# ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
-# 14-06 **** Bulunsky District
# 14-09 **** Verkhoyansky District
# 14-31 **** Ust-Yansky District
-# From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
-# Bulunsky District will be moving from UTC+10 to UTC+9 on 2014-10-26.
-# However, we had used Asia/Vladivostok to cover this region, which has been
-# on UTC+11 and is moving to UTC+10. It is likely that Bulunsky District has
-# been on UTC+10 since the 2011-03-27 changes. It will need its own zone to
-# reflect this history.
-
Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15
9:00 - VLAT 1930 Jun 21 # Vladivostok Time
10:00 Russia VLA%sT 1991 Mar 31 2:00s
@@ -2538,6 +2545,32 @@ Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15
10:00 - VLAT
+# From Tim Parenti (2014-07-06):
+# Asia/Tiksi covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
+# 14-06 **** Bulunsky District
+
+# From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
+# Bulunsky District will be moving from UTC+10 to UTC+9 on 2014-10-26.
+# However, we had used Asia/Vladivostok to cover this region, which has been
+# on UTC+11 and is moving to UTC+10. It is likely that Bulunsky District has
+# been on UTC+10 since the 2011-03-27 changes.
+#
+# Assume Bulunsky District was like Asia/Vladivostok until 2011-03-27, and
+# has been like Asia/Yakutsk since.
+
+# [This zone is commented out for now until it can be better verified; use
+# Asia/Yakutsk for current timestamps in the meantime.]
+# The zone.tab line will be:
+# RU +7138+12852 Asia/Tiksi Moscow+06 - Bulunsky
+#Zone Asia/Tiksi 8:35:28 - 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%sT 1992 Jan 19 2:00s
+# 10:00 Russia VLA%sT 2011 Mar 27 2:00s
+# 10:00 - YAKT 2014 Oct 26 2:00s
+# 9:00 - YAKT
+
+
# From Tim Parenti (2014-07-03):
# Asia/Khandyga covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
# 14-28 **** Tomponsky District
@@ -2584,17 +2617,6 @@ Zone Asia/Sakhalin 9:30:48 - LMT 1905 Aug 23
# From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
# Asia/Magadan covers...
# 49 RU-MAG Magadan Oblast
-#
-# ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
-# 14-01 **** Abyysky District
-# 14-03 **** Allaikhovsky District
-# 14-08 **** Verkhnekolymsky District
-# 14-17 **** Momsky District
-# 14-20 **** Nizhnekolymsky District
-# 14-25 **** Srednekolymsky District
-#
-# ...and parts of (65, RU-SAK) Sakhalin Oblast:
-# 65-11 **** Severo-Kurilsky District (North Kuril Islands)
# From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
# Magadan Oblast is moving from UTC+12 to UTC+10 on 2014-10-26; however,
@@ -2612,6 +2634,63 @@ Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
10:00 - MAGT
+# From Tim Parenti (2014-07-06):
+# Asia/Srednekolymsk covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
+# 14-01 **** Abyysky District
+# 14-03 **** Allaikhovsky District
+# 14-08 **** Verkhnekolymsky District
+# 14-17 **** Momsky District
+# 14-20 **** Nizhnekolymsky District
+# 14-25 **** Srednekolymsky District
+#
+# ...and parts of (65, RU-SAK) Sakhalin Oblast:
+# 65-11 **** Severo-Kurilsky District (North Kuril Islands)
+
+# From Tim Parenti (2014-07-02):
+# Oymyakonsky District of Sakha Republic (represented by Ust-Nera), along with
+# most of Sakhalin Oblast (represented by Sakhalin) will be moving to UTC+10 on
+# 2014-10-26 to stay aligned with VLAT/SAKT; however, Severo-Kurilsky District
+# of the Sakhalin Oblast (also known as the North Kuril Islands, represented by
+# Severo-Kurilsk) will remain on UTC+11.
+
+# From Tim Parenti (2014-07-06):
+# Assume North Kuril Islands have history like Magadan before 2011-03-27.
+# There is a decent chance this is wrong, in which case a new zone
+# Asia/Severo-Kurilsk would become necessary.
+#
+# Srednekolymsk and Zyryanka are the most populous places amongst these
+# districts, but have very similar populations. In fact, Wikipedia currently
+# lists them both as having 3528 people, exactly 1668 males and 1860 females
+# each! (Yikes!)
+# http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493
+# http://en.wikipedia.org/w/?title=Nizhnekolymsky_District&oldid=588796422
+# Assume this is a mistake, albeit an amusing one.
+#
+# Looking at censuses, the populations of the two municipalities seem to have
+# fluctuated recently. Zyryanka was more populous than Srednekolymsk in the
+# 1989 and 2002 censuses, but Srednekolymsk was more populous in the most
+# recent (2010) census, 3525 to 3170. (See pages 195 and 197 of
+# http://www.gks.ru/free_doc/new_site/perepis2010/croc/Documents/Vol1/pub-01-05.pdf
+# in Russian.) In addition, Srednekolymsk appears to be a much older
+# settlement and the population of Zyryanka seems to be declining.
+# Go with Srednekolymsk.
+#
+# Since Magadan Oblast moves to UTC+10 on 2014-10-26, we cannot keep using MAGT
+# as the abbreviation. Use SRET instead.
+
+# [This zone is commented out for now, as the 2014 change is not yet official;
+# use Asia/Magadan in the meantime.]
+# The zone.tab line will be:
+# RU +6728+15343 Asia/Srednekolymsk Moscow+08 - Srednekolymsk, North Kuril Islands
+#Zone Asia/Srednekolymsk 10:14:52 - LMT 1924 May 2
+# 10:00 - MAGT 1930 Jun 21 # Magadan Time
+# 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
+# 12:00 - MAGT 2014 Oct 26 2:00s
+# 11:00 - SRET # Srednekolymsk Time
+
+
# From Tim Parenti (2014-07-03):
# Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
# 14-22 **** Oymyakonsky District
--
1.9.1
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