Update to tzdata version 2016j.

https://mm.icann.org/pipermail/tz-announce/2016-November/000044.html
tzinfo · Nov 24, 2016 · 64eae93 · 64eae93
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diff --git a/data/CONTRIBUTING b/data/CONTRIBUTING
@@ -18,10 +18,10 @@ data should contain commentary citing reliable sources as
 justification.
 
 Please submit changes against either the latest release in
-<ftp://ftp.iana.org/tz/> or the master branch of the experimental
-Git repository.  If you use Git the following workflow may be helpful:
+<ftp://ftp.iana.org/tz/> or the master branch of the development
+repository.  If you use Git the following workflow may be helpful:
 
-  * Copy the experimental repository.
+  * Copy the development repository.
 
       git clone https://github.com/eggert/tz.git
       cd tz

diff --git a/data/NEWS b/data/NEWS
@@ -1,5 +1,46 @@
 News for the tz database
 
+Release 2016j - 2016-11-22 23:17:13 -0800
+
+  Briefly: Saratov, Russia moves from +03 to +04 on 2016-12-04.
+
+  Changes to future time stamps
+
+    Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
+    This hives off a new zone Europe/Saratov from Europe/Volgograd.
+    (Thanks to Yuri Konotopov and Stepan Golosunov.)
+
+  Changes to past time stamps
+
+    The new zone Asia/Atyrau for Atyraū Region, Kazakhstan, is like
+    Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
+    1999, not fall 1994.  (Thanks to Stepan Golosunov.)
+
+  Changes to past time zone abbreviations
+
+    Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
+    summer time before 1948.  The old use of "EET" was a typo.
+
+  Changes to code
+
+    zic no longer mishandles file systems that lack hard links, fixing
+    bugs introduced in 2016g.  (Problems reported by Tom Lane.)
+    Also, when the destination already contains symbolic links, zic
+    should now work better on systems where the 'link' system call
+    does not follow symbolic links.
+
+  Changes to documentation and commentary
+
+    tz-link.htm now documents the relationship between release version
+    numbers and development-repository commit tags.  (Suggested by
+    Paul Koning.)
+
+    The 'Theory' file now documents UT.
+
+    iso3166.tab now accents "Curaçao", and commentary now mentions
+    the names "Cabo Verde" and "Czechia".  (Thanks to Jiří Boháč.)
+
+
 Release 2016i - 2016-11-01 23:19:52 -0700
 
   Briefly: Cyprus split into two time zones on 2016-10-30, and Tonga
@@ -212,7 +253,7 @@ Release 2016g - 2016-09-13 08:56:38 -0700
     23 commits and some working-file changes have been made since
     release 2016g, the version number is now something like
     '2016g-23-g50556e3-dirty' instead of the misleading '2016g'.
-    Official releases uses the same version number format as before,
+    Tagged releases use the same version number format as before,
     e.g., '2016g'.  To support the more-accurate version number, its
     specification has moved from a line in the Makefile to a new
     source file 'version'.

diff --git a/data/README b/data/README
@@ -10,24 +10,9 @@ locations around the globe.  It is updated periodically to reflect
 changes made by political bodies to time zone boundaries, UTC offsets,
 and daylight-saving rules.
 
-Here is a recipe for acquiring, building, installing, and testing the
-tz distribution on a GNU/Linux or similar host.
-
-To acquire the distribution, run the following shell commands:
-
-	mkdir tz
-	cd tz
-	wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
-	gzip -dc tzcode-latest.tar.gz | tar -xf -
-	gzip -dc tzdata-latest.tar.gz | tar -xf -
-
-Alternatively, the following shell commands acquire the same
-distribution, with extra data useful for regression testing:
-
-	wget --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz'
-	lzip -dc tzdb-latest.tar.lz | tar -xf -
-
-Be sure to read the comments in "Makefile" and make any changes needed
+See <https://www.iana.org/time-zones/repository/tz-link.html> or the
+file tz-link.htm for how to acquire the code and data.  Once acquired,
+read the comments in the file 'Makefile' and make any changes needed
 to make things right for your system, especially if you are using some
 platform other than GNU/Linux.  Then run the following commands,
 substituting your desired installation directory for "$HOME/tzdir":
@@ -60,10 +45,6 @@ Thanks in particular to Arthur David Olson, the project's founder and first
 maintainer, to whom the time zone community owes the greatest debt of all.
 None of them are responsible for remaining errors.
 
-Look in <ftp://ftp.iana.org/tz/releases/> for updated versions of these files.
-
-Please send comments or information to [email protected].
-
 -----
 
 This file is in the public domain, so clarified as of 2009-05-17 by

diff --git a/data/SOURCE b/data/SOURCE
@@ -1,2 +1,2 @@
 The files in this directory were obtained from the IANA Time Zone Database
-http://www.iana.org/time-zones, version 2016i.
+http://www.iana.org/time-zones, version 2016j.
diff --git a/data/Theory b/data/Theory
@@ -8,6 +8,7 @@ Theory and pragmatics of the tz code and data
 	Time zone abbreviations
 	Accuracy of the tz database
 	Time and date functions
+	Interface stability
 	Calendrical issues
 	Time and time zones on Mars
 
@@ -342,12 +343,24 @@ Errors in the tz database arise from many sources:
    non-hour-based system at night.
 
  * Early clocks were less reliable, and data entries do not represent
-   this unreliability.
-
- * As for leap seconds, civil time was not based on atomic time before
-   1972, and we don't know the history of earth's rotation accurately
-   enough to map SI seconds to historical solar time to more than
-   about one-hour accuracy.  See: Morrison LV, Stephenson FR.
+   clock error.
+
+ * The tz database assumes Universal Time (UT) as an origin, even
+   though UT is not standardized for older time stamps.  In the tz
+   database commentary, UT denotes a family of time standards that
+   includes Coordinated Universal Time (UTC) along with other variants
+   such as UT1 and GMT, with days starting at midnight.  Although UT
+   equals UTC for modern time stamps, UTC was not defined until 1960,
+   so commentary uses the more-general abbreviation UT for time stamps
+   that might predate 1960.  Since UT, UT1, etc. disagree slightly,
+   and since pre-1972 UTC seconds varied in length, interpretation of
+   older time stamps can be problematic when subsecond accuracy is
+   needed.
+
+ * Civil time was not based on atomic time before 1972, and we don't
+   know the history of earth's rotation accurately enough to map SI
+   seconds to historical solar time to more than about one-hour
+   accuracy.  See: Morrison LV, Stephenson FR.
    Historical values of the Earth's clock error Delta T and the
    calculation of eclipses. J Hist Astron. 2004;35:327-36
    <http://adsabs.harvard.edu/full/2004JHA....35..327M>;
@@ -601,10 +614,14 @@ The tz code and data supply the following interfaces:
 
  * The format of the country code file, documented in iso3166.tab.
 
-When these interfaces are changed, an effort is made to preserve
-backward compatibility.  For example, tz data files typically do not
-rely on recently-added zic features, so that users can run older zic
-versions to process newer data files.
+ * The version number of the code and data, as the first line of
+   the text file 'version' in each release.
+
+Interface changes in a release attempt to preserve compatibility with
+recent releases.  For example, tz data files typically do not rely on
+recently-added zic features, so that users can run older zic versions
+to process newer data files.  The tz-link.htm file describes how
+releases are tagged and distributed.
 
 Interfaces not listed above are less stable.  For example, users
 should not rely on particular UT offsets or abbreviations for time

diff --git a/data/africa b/data/africa
@@ -119,7 +119,7 @@ Zone	Africa/Algiers	0:12:12 -	LMT	1891 Mar 15  0:01
 # Cameroon
 # See Africa/Lagos.
 
-# Cape Verde
+# Cape Verde / Cabo Verde
 #
 # Shanks gives 1907 for the transition to CVT.
 # Perhaps the 1911-05-26 Portuguese decree

diff --git a/data/asia b/data/asia
@@ -1583,12 +1583,12 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # was "blended" with the Central zone.  Therefore, Kazakhstan now has
 # two time zones, and difference between them is one hour.  The zone
 # closer to UTC is the former Western zone (probably still called the
-# same), encompassing four provinces in the west: Aqtobe, Atyrau,
-# Mangghystau, and West Kazakhstan.  The other zone encompasses
+# same), encompassing four provinces in the west: Aqtöbe, Atyraū,
+# Mangghystaū, and West Kazakhstan.  The other zone encompasses
 # everything else....  I guess that would make Kazakhstan time zones
 # de jure UTC+5 and UTC+6 respectively.
 
-# From Stepan Golosunov (2016-03-27) ([*] means see later comments below):
+# From Stepan Golosunov (2016-03-27):
 # Review of the linked documents from http://adilet.zan.kz/
 # produced the following data for post-1991 Kazakhstan:
 #
@@ -1634,7 +1634,7 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 #
 # This implies that on 1991-03-31 Asia/Oral remained on +04/+05 while
 # the rest of Kazakhstan switched from +06/+07 to +05/06 or from +05/06
-# to +04/+05. It's unclear how Kzyl-Orda oblast moved into the fifth
+# to +04/+05. It's unclear how Qyzylorda oblast moved into the fifth
 # time belt. (By switching from +04/+05 to +05/+06 on 1991-09-29?) ...
 #
 # 1. Act of the Cabinet of Ministers of the Republic of Kazakhstan
@@ -1647,25 +1647,25 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # on the whole territory of Kazakhstan 1 hour forward on 1992-01-19 at
 # 2:00, specified DST rules.  It acknowledged that Kazakhstan was
 # located in the fourth and the fifth time belts and specified the
-# border between them to be located east of Kustanay and Aktyubinsk
-# oblasts (notably including Turgai and Kzyl-Orda oblasts into the fifth
+# border between them to be located east of Qostanay and Aktyubinsk
+# oblasts (notably including Turgai and Qyzylorda oblasts into the fifth
 # time belt).
 #
 # This means switch on 1992-01-19 at 2:00 from +04/+05 to +05/+06 for
-# Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyrau and Kustanay oblasts; from
-# +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk) [*]....
+# Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyraū and Qostanay oblasts; from
+# +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk)....
 #
 # 2. Act of the Cabinet of Ministers of the Republic of Kazakhstan
 # from 1992-03-27 No. 284
 # http://adilet.zan.kz/rus/docs/P920000284_
-# cancels extra hour ("decree time") for Uralsk and Kzyl-Orda oblasts
+# cancels extra hour ("decree time") for Uralsk and Qyzylorda oblasts
 # since the last Sunday of March 1992, while keeping them in the fourth
 # and the fifth time belts respectively.
 #
 # 3. Order of the Prime Minister of the Republic of Kazakhstan
 # from 1994-09-23 No. 384
 # http://adilet.zan.kz/rus/docs/R940000384_
-# cancels the extra hour ("decree time") on the territory of Mangystau
+# cancels the extra hour ("decree time") on the territory of Mangghystaū
 # oblast since the last Sunday of September 1994 (saying that time on
 # the territory would correspond to the third time belt as a
 # result)....
@@ -1679,14 +1679,11 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # 5. Act of the Government of the Republic of Kazakhstan
 # from 1999-03-26 No. 305
 # http://adilet.zan.kz/rus/docs/P990000305_
-# cancels the extra hour ("decree time") for Atyrau oblast since the
+# cancels the extra hour ("decree time") for Atyraū oblast since the
 # last Sunday of March 1999 while retaining the oblast in the fourth
 # time belt.
 #
-# This means change from +05/+06 to +04/+05.
-#
-# There is no zone for Atyrau currently (listed under Asia/Aqtau in
-# zone1970.tab).[*]
+# This means change from +05/+06 to +04/+05....
 #
 # 6. Act of the Government of the Republic of Kazakhstan
 # from 2000-11-23 No. 1749
@@ -1696,10 +1693,10 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # The only changes I noticed are in definition of the border between the
 # fourth and the fifth time belts.  They account for changes in spelling
 # and administrative division (splitting of Turgai oblast in 1997
-# probably changed time in territories incorporated into Kostanay oblast
-# (including Arkalyk) from +06/+07 to +05/+06) and move Kyzylorda oblast
+# probably changed time in territories incorporated into Qostanay oblast
+# (including Arkalyk) from +06/+07 to +05/+06) and move Qyzylorda oblast
 # from being in the fifth time belt and not using decree time into the
-# fourth time belt (no change in practice).[*]
+# fourth time belt (no change in practice).
 #
 # 7. Act of the Government of the Republic of Kazakhstan
 # from 2003-12-29 No. 1342
@@ -1709,7 +1706,7 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # 8. Act of the Government of the Republic of Kazakhstan
 # from 2004-07-20 No. 775
 # http://adilet.zan.kz/rus/archive/docs/P040000775_/20.07.2004
-# modified the 2000-11-23 act to move Kostanay and Kyzylorda oblasts into
+# modified the 2000-11-23 act to move Qostanay and Qyzylorda oblasts into
 # the fifth time belt and add Aktobe oblast to the list of regions not
 # using extra hour ("decree time"), leaving Kazakhstan with only 2 time
 # zones (+04/+05 and +06/+07).  The changes were to be implemented
@@ -1721,14 +1718,14 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # http://adilet.zan.kz/rus/docs/P040001059_
 # modified the 2000-11-23 act to remove exceptions from the "decree time"
 # (leaving Kazakhstan in +05/+06 and +06/+07 zones), amended the
-# 2004-07-20 act to implement changes for Atyrau, West Kazakhstan,
-# Kostanay, Kyzylorda and Mangystau oblasts by not moving clocks
-# during the 2014 transition to "winter" time.
+# 2004-07-20 act to implement changes for Atyraū, West Kazakhstan,
+# Qostanay, Qyzylorda and Mangghystaū oblasts by not moving clocks
+# during the 2004 transition to "winter" time.
 #
-# This means transition from +04/+05 to +05/+06 for Atyrau oblast (no
+# This means transition from +04/+05 to +05/+06 for Atyraū oblast (no
 # zone currently), Asia/Oral, Asia/Aqtau and transition from +05/+06 to
-# +06/+07 for Kostanay oblast (Kostanay and Arkalyk, no zones currently)
-# and Asia/Qyzylorda on 2004-10-31 at 3:00....[*]
+# +06/+07 for Qostanay oblast (Qostanay and Arkalyk, no zones currently)
+# and Asia/Qyzylorda on 2004-10-31 at 3:00....
 #
 # 10. Act of the Government of the Republic of Kazakhstan
 # from 2005-03-15 No. 231
@@ -1744,14 +1741,9 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # Kazakh 1992-01-13 act appears to provide the same rules and 1992-03-27
 # act was to be enacted on the last Sunday of March 1992.
 
-# From Paul Eggert (2016-04-15):
-# The tables below should reflect Stepan Golosunov's remarks above,
-# except for the items marked "[*]" which I haven't gotten to yet.
-# It looks like we will need new zones Asia/Atyrau and Asia/Qostanay
-# to handle changes from 1992 through 2004 that we did not previously
-# know about.
+# From Paul Eggert (2016-11-07):
+# The tables below reflect Golosunov's remarks, with exceptions as noted.
 
-#
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #
 # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
@@ -1764,6 +1756,8 @@ Zone	Asia/Almaty	5:07:48 -	LMT	1924 May  2 # or Alma-Ata
 			6:00 RussiaAsia	+06/+07	2004 Oct 31  2:00s
 			6:00	-	+06
 # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY)
+# This currently includes Qostanay (aka Kostanay, Kustanay) (KZ-KUS);
+# see comments below.
 Zone	Asia/Qyzylorda	4:21:52 -	LMT	1924 May  2
 			4:00	-	+04	1930 Jun 21
 			5:00	-	+05	1981 Apr  1
@@ -1775,7 +1769,21 @@ Zone	Asia/Qyzylorda	4:21:52 -	LMT	1924 May  2
 			6:00 RussiaAsia	+06/+07	1992 Mar 29  2:00s
 			5:00 RussiaAsia	+05/+06	2004 Oct 31  2:00s
 			6:00	-	+06
-# Aqtobe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT)
+# The following zone is like Asia/Qyzylorda except for being one
+# hour earlier from 1991-09-29 to 1992-03-29.  The 1991/2 rules for
+# Qostenay are unclear partly because of the 1997 Turgai
+# reorganization, so this zone is commented out for now.
+#Zone	Asia/Qostanay	4:14:20 -	LMT	1924 May  2
+#			4:00	-	+04	1930 Jun 21
+#			5:00	-	+05	1981 Apr  1
+#			5:00	1:00	+06	1981 Oct  1
+#			6:00	-	+06	1982 Apr  1
+#			5:00 RussiaAsia	+05/+06	1991 Mar 31  2:00s
+#			4:00 RussiaAsia	+04/+05	1992 Jan 19  2:00s
+#			5:00 RussiaAsia	+05/+06	2004 Oct 31  2:00s
+#			6:00	-	+06
+#
+# Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT)
 Zone	Asia/Aqtobe	3:48:40	-	LMT	1924 May  2
 			4:00	-	+04	1930 Jun 21
 			5:00	-	+05	1981 Apr  1
@@ -1785,22 +1793,29 @@ Zone	Asia/Aqtobe	3:48:40	-	LMT	1924 May  2
 			4:00 RussiaAsia	+04/+05	1992 Jan 19  2:00s
 			5:00 RussiaAsia	+05/+06	2004 Oct 31  2:00s
 			5:00	-	+05
-# Qostanay (KZ-KUS)
-
-# Mangghystau (KZ-MAN)
+# Mangghystaū (KZ-MAN)
 # Aqtau was not founded until 1963, but it represents an inhabited region,
 # so include time stamps before 1963.
 Zone	Asia/Aqtau	3:21:04	-	LMT	1924 May  2
 			4:00	-	+04	1930 Jun 21
-			5:00	-	+05	1963
 			5:00	-	+05	1981 Oct  1
 			6:00	-	+06	1982 Apr  1
 			5:00 RussiaAsia	+05/+06	1991 Mar 31  2:00s
 			4:00 RussiaAsia	+04/+05	1992 Jan 19  2:00s
 			5:00 RussiaAsia	+05/+06	1994 Sep 25  2:00s
 			4:00 RussiaAsia	+04/+05	2004 Oct 31  2:00s
 			5:00	-	+05
-
+# Atyraū (KZ-ATY) is like Mangghystaū except it switched from
+# +04/+05 to +05/+06 in spring 1999, not fall 1994.
+Zone	Asia/Atyrau	3:27:44	-	LMT	1924 May  2
+			4:00	-	+04	1930 Jun 21
+			5:00	-	+05	1981 Oct  1
+			6:00	-	+06	1982 Apr  1
+			5:00 RussiaAsia	+05/+06	1991 Mar 31  2:00s
+			4:00 RussiaAsia	+04/+05	1992 Jan 19  2:00s
+			5:00 RussiaAsia	+05/+06	1999 Mar 28  2:00s
+			4:00 RussiaAsia	+04/+05	2004 Oct 31  2:00s
+			5:00	-	+05
 # West Kazakhstan (KZ-ZAP)
 # From Paul Eggert (2016-03-18):
 # The 1989 transition is from USSR act No. 227 (1989-03-14).
@@ -2616,7 +2631,7 @@ Rule Palestine	2016	max	-	Oct	lastSat	1:00	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Gaza	2:17:52	-	LMT	1900 Oct
-			2:00	Zion	EET	1948 May 15
+			2:00	Zion	EET/EEST 1948 May 15
 			2:00 EgyptAsia	EE%sT	1967 Jun  5
 			2:00	Zion	I%sT	1996
 			2:00	Jordan	EE%sT	1999
@@ -2629,7 +2644,7 @@ Zone	Asia/Gaza	2:17:52	-	LMT	1900 Oct
 			2:00 Palestine	EE%sT
 
 Zone	Asia/Hebron	2:20:23	-	LMT	1900 Oct
-			2:00	Zion	EET	1948 May 15
+			2:00	Zion	EET/EEST 1948 May 15
 			2:00 EgyptAsia	EE%sT	1967 Jun  5
 			2:00	Zion	I%sT	1996
 			2:00	Jordan	EE%sT	1999