Squashed 'tz/' changes from d2c79c4bc..e6150f292

95ecc37d2 Release 2022a
d90452ece * NEWS: Add 2022a "Briefly".
44b73f770 * NEWS: Coalesce Palestine entries.
049044d77 * zdump.c: Fix date typo in comment.
e8681e760 Adjust Chile LMT; expand 1946/1947 commentary
0caefb646 Revert "Chile’s Magallanes was like Santiago in 1946/7"
22a2dca72 URL housekeeping
6d6a21f59 Chile’s Magallanes was like Santiago in 1946/7
f4b156691 Palestine springs forward a day later
cac76bf92 Fix white space.
318759658 Add URLs to Morocco commentary (thanks to Milamber)
6ff7b3502 Fix French typo
88d2c3909 Fix Lubumbashi between 1897 and 1929
7f60edb1d * private.h (UNINIT_TRAP): Add comment.
db9347fbb Fix processing of TZif truncation
df4699ddf Add comments on Russia in 1981 (thanks to Alois Treindl)
4117b20d0 Simplify Ukraine metadata
93dcac0c6 Ukraine’s 1992/1996 DST changes 02:00s not 01:00u
b74f54452 dumptime’s argument is always nonnull now
3a11c9cc2 I18nize zdump a bit better
a12823400 Improve doc for some source files
0b8077257 Simplify recent zdump port
80096e016 zdump ports better to odd C11 platforms
b6f92f762 zdump -v reports localtime+gmtime failures better
e3c58df90 * Makefile (AWK): Warn re mawk 1.3.3 (thanks to Jonathan Ben Avraham)
9c8cb5d76 No leap second on 2022-06-30
cec7d9e2e Improve rearguard port of post-2087 Morocco
01eeac6b0 zic: omit parens that the C standard doesn’t allow
6cfaa796e Fix "el ds" typo in man pages
aa9c4662f * CONTRIBUTING: Move pull request insns to start.
4292b9320 Convert CONTRIBUTING back to plain text
b0c24fad4 Rename CONTRIBUTING.md back to CONTRIBUTING
7a200f2b3 Fix Y2242 bug in tzdb tarball generation
5f6467141 Support busybox awk
8407d785a Port zic to Solaris 10 automounts
b10ff6d60 Port tzselect to Solaris 10 /bin/sh
e4a46da99 Simplify tzselect by omitting old Bash workaround
ee44afb40 Distribute tarballs in ustar rather than gnu form
68b99887d Remove duplicate Trinidad and Tobago comment
f6c9f51fa Fix minor formatting inconsistencies
3fdd3c482 Rename CONTRIBUTING to CONTRIBUTING.md
b0de1570e Switch to Markdown format
228a93f75 Remove bad backzone link for US Virgin Is
8b409e22d Be more generous when dealing with v1 data
e5a4add00 Fix uninitialized variable bug
1a4a7eab6 spelling fix
0b13c6b41 Update Palestine commentary
59467e337 Improve Palestine predictions for 2025 and later
b102002e5 Release 2021e
d86edaf12 Palestine falls back October 29 01:00.
8da2e33e0 Palestine falls back October 28 24:00
4de3d7f24 Release 2021d
951b4f301 * NEWS: Reformat to fit in fewer columns.
5f06f9a31 zic -r now uses -00 for unspecified timestamps
f8c660ce6 Simplify zic writezone slightly
bdeb83438 Document that -00 means local time is unspecified
f74940d96 Fiji suspends DST for the 2021/2022 season
0bf5a761f Fix zic.8 typos
868ba546b Correct spelling of "Treindl" (thanks to Steffen Nurpmeso)
e5d72c0f9 Clarify comments re Rome in April 1944

git-subtree-dir: tz
git-subtree-split: e6150f292f19c33ae136f70464d6075c41a1a5f3

Author: stub42

CONTRIBUTING

@@ -1,53 +1,58 @@
-Contributing to the tz code and data
+# Contributing to the tz code and data
+
+Please do not create issues or pull requests on GitHub, as the
+proper procedure for proposing and distributing patches is via
+email as described below.
 
 The time zone database is by no means authoritative: governments
 change timekeeping rules erratically and sometimes with little
 warning, the data entries do not cover all of civil time before
 1970, and undoubtedly errors remain in the code and data.  Feel
 free to fill gaps or fix mistakes, and please email improvements
-to [email protected] for use in the future.  In your email, please give
+to <[email protected]> for use in the future.  In your email, please give
 reliable sources that reviewers can check.
 
------
-
-Developers can contribute technical changes to the source code and
-data as follows.
+## Contributing technical changes
 
 To email small changes, please run a POSIX shell command like
 'diff -u old/europe new/europe >myfix.patch', and attach
-myfix.patch to the email.
+'myfix.patch' to the email.
 
 For more-elaborate or possibly-controversial changes,
 such as renaming, adding or removing zones, please read
-<https://www.iana.org/time-zones/repository/theory.html> or the file
-theory.html.  It is also good to browse the mailing list archives
+"Theory and pragmatics of the tz code and data"
+<https://www.iana.org/time-zones/repository/theory.html>.
+It is also good to browse the mailing list archives
 <https://mm.icann.org/pipermail/tz/> for examples of patches that tend
 to work well.  Additions to data should contain commentary citing
-reliable sources as justification.  Citations should use https: URLs
+reliable sources as justification.  Citations should use "https:" URLs
 if available.
 
 For changes that fix sensitive security-related bugs, please see the
-file SECURITY.
+distribution's 'SECURITY' file.
 
-Please submit changes against either the latest release in
+Please submit changes against either the latest release
 <https://www.iana.org/time-zones> or the main branch of the development
-repository.  The latter is preferred.  If you use Git the following
-workflow may be helpful:
+repository.  The latter is preferred.
+
+## Sample Git workflow for developing contributions
+
+If you use Git the following workflow may be helpful:
 
   * Copy the development repository.
 
-      git clone https://github.com/eggert/tz.git
-      cd tz
+        git clone https://github.com/eggert/tz.git
+        cd tz
 
   * Get current with the main branch.
 
-      git checkout main
-      git pull
+        git checkout main
+        git pull
 
   * Switch to a new branch for the changes.  Choose a different
     branch name for each change set.
 
-      git checkout -b mybranch
+        git checkout -b mybranch
 
   * Sleuth by using 'git blame'.  For example, when fixing data for
     Africa/Sao_Tome, if the command 'git blame africa' outputs a line
@@ -60,36 +65,33 @@ workflow may be helpful:
 
   * Debug the changes, e.g.:
 
-      make check
-      make install
-      ./zdump -v America/Los_Angeles
+        make check
+        make install
+        ./zdump -v America/Los_Angeles
 
   * For each separable change, commit it in the new branch, e.g.:
 
-      git add northamerica
-      git commit
+        git add northamerica
+        git commit
 
     See recent 'git log' output for the commit-message style.
 
-  * Create patch files 0001-*, 0002-*, ...
+  * Create patch files 0001-..., 0002-..., ...
 
-      git format-patch main
+        git format-patch main
 
-  * After reviewing the patch files, send the patches to [email protected]
+  * After reviewing the patch files, send the patches to <[email protected]>
     for others to review.
 
-      git send-email main
+        git send-email main
 
     For an archived example of such an email, see
+    "[PROPOSED] Fix off-by-1 error for Jamaica and T&C before 1913"
     <https://mm.icann.org/pipermail/tz/2018-February/026122.html>.
 
   * Start anew by getting current with the main branch again
     (the second step above).
 
-Please do not create issues or pull requests on GitHub, as the
-proper procedure for proposing and distributing patches is via
-email as illustrated above.
-
 -----
 
 This file is in the public domain.

Makefile

@@ -399,9 +399,10 @@ ZFLAGS=
 ZIC_INSTALL=	$(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
 
 # The name of a Posix-compliant 'awk' on your system.
-# Older 'mawk' versions, such as the 'mawk' in Ubuntu 16.04, might dump core;
-# on Ubuntu you can work around this with
-#	AWK=		gawk
+# mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work.
+# Also, it is better (though not essential) if 'awk' supports UTF-8,
+# and unfortunately mawk and busybox awk do not support UTF-8.
+# Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems.
 AWK=		awk
 
 # The full path name of a Posix-compliant shell, preferably one that supports
@@ -466,7 +467,9 @@ OK_LINE=	'^'$(OK_CHAR)'*$$'
 
 # Flags to give 'tar' when making a distribution.
 # Try to use flags appropriate for GNU tar.
-GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w --sort=name
+GNUTARFLAGS= --format=pax --pax-option='delete=atime,delete=ctime' \
+  --numeric-owner --owner=0 --group=0 \
+  --mode=go+u,go-w --sort=name
 TARFLAGS=	`if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
 		 then echo $(GNUTARFLAGS); \
 		 else :; \
@@ -742,7 +745,7 @@ date:		$(DATEOBJS)
 tzselect:	tzselect.ksh version
 		VERSION=`cat version` && sed \
 			-e 's|#!/bin/bash|#!$(KSHELL)|g' \
-			-e 's|AWK=[^}]*|AWK=$(AWK)|g' \
+			-e 's|AWK=[^}]*|AWK='\''$(AWK)'\''|g' \
 			-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
 			-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
 			-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \

NEWS

@@ -1,5 +1,92 @@
 News for the tz database
 
+Release 2022a - 2022-03-15 23:02:01 -0700
+
+  Briefly:
+    Palestine will spring forward on 2022-03-27, not -03-26.
+    zdump -v now outputs better failure indications.
+    Bug fixes for code that reads corrupted TZif data.
+
+  Changes to future timestamps
+
+    Palestine will spring forward on 2022-03-27, not 2022-03-26.
+    (Thanks to Heba Hamad.)  Predict future transitions for first
+    Sunday >= March 25.  Additionally, predict fallbacks to be the first
+    Friday on or after October 23, not October's last Friday, to be more
+    consistent with recent practice.  The first differing fallback
+    prediction is on 2025-10-24, not 2025-10-31.
+
+  Changes to past timestamps
+
+    From 1992 through spring 1996, Ukraine's DST transitions were at
+    02:00 standard time, not at 01:00 UTC.  (Thanks to Alois Treindl.)
+
+    Chile's Santiago Mean Time and its LMT precursor have been adjusted
+    eastward by 1 second to align with past and present law.
+
+  Changes to commentary
+
+    Add several references for Chile's 1946/1947 transitions, some of
+    which only affected portions of the country.
+
+  Changes to code
+
+    Fix bug when mktime gets confused by truncated TZif files with
+    unspecified local time.  (Problem reported by Almaz Mingaleev.)
+
+    Fix bug when 32-bit time_t code reads malformed 64-bit TZif data.
+    (Problem reported by Christos Zoulas.)
+
+    When reading a version 2 or later TZif file, the TZif reader now
+    validates the version 1 header and data block only enough to skip
+    over them, as recommended by RFC 8536 section 4.  Also, the TZif
+    reader no longer mistakenly attempts to parse a version 1 TZIf
+    file header as a TZ string.
+
+    zdump -v now outputs "(localtime failed)" and "(gmtime failed)"
+    when local time and UT cannot be determined for a timestamp.
+
+  Changes to build procedure
+
+    Distribution tarballs now use standard POSIX.1-1988 ustar format
+    instead of GNU format.  Although the formats are almost identical
+    for these tarballs, ustar headers' magic fields contain "ustar"
+    instead of "ustar ", and their version fields contain "00" instead
+    of " ".  The two formats are planned to diverge more significantly
+    for tzdb releases after 2242-03-16 12:56:31 UTC, when the ustar
+    format becomes obsolete and the tarballs switch to pax format, an
+    extension of ustar.  For details about these formats, please see
+    "pax - portable archive interchange", IEEE Std 1003.1-2017,
+    <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html#tag_20_92_13>.
+
+
+Release 2021e - 2021-10-21 18:41:00 -0700
+
+  Changes to future timestamps
+
+    Palestine will fall back 10-29 (not 10-30) at 01:00.
+    (Thanks to P Chan and Heba Hemad.)
+
+
+Release 2021d - 2021-10-15 13:48:18 -0700
+
+  Briefly:
+    Fiji suspends DST for the 2021/2022 season.
+    'zic -r' marks unspecified timestamps with "-00".
+
+  Changes to future timestamps
+
+    Fiji will suspend observance of DST for the 2021/2022 season.
+    Assume for now that it will return next year.  (Thanks to Jashneel
+    Kumar and P Chan.)
+
+  Changes to code
+
+    'zic -r' now uses "-00" time zone abbreviations for intervals
+    with UT offsets that are unspecified due to -r truncation.
+    This implements a change in draft Internet RFC 8536bis.
+
+
 Release 2021c - 2021-10-01 14:21:49 -0700
 
   Briefly:
@@ -546,13 +633,13 @@ Release 2019c - 2019-09-11 08:59:48 -0700
     probably wrong.)
 
     Fix several errors in pre-1970 transitions in Perry County, IN.
-    (Thanks to Alois Triendl for pointing out the 1967/9 errors.)
+    (Thanks to Alois Treindl for pointing out the 1967/9 errors.)
 
     Edmonton did not observe DST in 1967 or 1969.  In 1946 Vancouver
     ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not
     10-06.  In 1945 Königsberg (now Kaliningrad) switched from +01/+02
     to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated
-    EET/EEST, not CET/CEST.  (Thanks to Alois Triendl.)  In 1946
+    EET/EEST, not CET/CEST.  (Thanks to Alois Treindl.)  In 1946
     Königsberg switched to +03 on 04-07 not 01-01.
 
     In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not

africa

@@ -918,6 +918,10 @@ Zone Indian/Mauritius	3:50:00 -	LMT	1907 # Port Louis
 #         (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a))
 #         (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b)))))
 #     (setq islamic-year (+ 1 islamic-year))))
+#
+# From Milamber (2021-03-31, 2022-03-10), confirming these predictions:
+# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076
+# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/
 
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule	Morocco	1939	only	-	Sep	12	 0:00	1:00	-

asia

@@ -3386,11 +3386,6 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # shall [end] on Oct 24th 2020 at 01:00AM by delaying the clock by 60 minutes.
 # http://www.palestinecabinet.gov.ps/portal/Meeting/Details/51584
 
-# From Tim Parenti (2020-10-20):
-# Predict future fall transitions at 01:00 on the Saturday preceding October's
-# last Sunday (i.e., Sat>=24).  This is consistent with our predictions since
-# 2016, although the time of the change differed slightly in 2019.
-
 # From Pierre Cashon (2020-10-20):
 # The summer time this year started on March 28 at 00:00.
 # https://wafa.ps/ar_page.aspx?id=GveQNZa872839351758aGveQNZ
@@ -3403,6 +3398,21 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # For now, guess spring-ahead transitions are at 00:00 on the Saturday
 # preceding March's last Sunday (i.e., Sat>=24).
 
+# From P Chan (2021-10-18):
+# http://wafa.ps/Pages/Details/34701
+# Palestine winter time will start from midnight 2021-10-29 (Thursday-Friday).
+#
+# From Heba Hemad, Palestine Ministry of Telecom & IT (2021-10-20):
+# ... winter time will begin in Palestine from Friday 10-29, 01:00 AM
+# by 60 minutes backwards.
+#
+# From Tim Parenti (2021-10-25), per Paul Eggert (2021-10-24):
+# Guess future fall transitions at 01:00 on the Friday preceding October's
+# last Sunday (i.e., Fri>=23), as this is more consistent with recent practice.
+
+# From Heba Hamad (2022-03-10):
+# summer time will begin in Palestine from Sunday 03-27-2022, 00:00 AM.
+
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule EgyptAsia	1957	only	-	May	10	0:00	1:00	S
 Rule EgyptAsia	1957	1958	-	Oct	 1	0:00	0	-
@@ -3437,8 +3447,10 @@ Rule Palestine	2016	2018	-	Mar	Sat>=24	1:00	1:00	S
 Rule Palestine	2016	2018	-	Oct	Sat>=24	1:00	0	-
 Rule Palestine	2019	only	-	Mar	29	0:00	1:00	S
 Rule Palestine	2019	only	-	Oct	Sat>=24	0:00	0	-
-Rule Palestine	2020	max	-	Mar	Sat>=24	0:00	1:00	S
-Rule Palestine	2020	max	-	Oct	Sat>=24	1:00	0	-
+Rule Palestine	2020	2021	-	Mar	Sat>=24	0:00	1:00	S
+Rule Palestine	2020	only	-	Oct	24	1:00	0	-
+Rule Palestine	2021	max	-	Oct	Fri>=23	1:00	0	-
+Rule Palestine	2022	max	-	Mar	Sun>=25	0:00	1:00	S
 
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Gaza	2:17:52	-	LMT	1900 Oct

australasia

@@ -385,9 +385,22 @@ Zone	Indian/Cocos	6:27:40	-	LMT	1900
 # "Minister for Employment, Parveen Bala says they had never thought of
 # stopping daylight saving. He says it was just to decide on when it should
 # start and end.  Bala says it is a short period..."
-# Since the end date is still in line with our ongoing predictions, assume for
-# now that the later-than-usual start date is a one-time departure from the
-# recent second Sunday in November pattern.
+#
+# From Tim Parenti (2021-10-11), per Jashneel Kumar (2021-10-11) and P Chan
+# (2021-10-12):
+# https://www.fiji.gov.fj/Media-Centre/Speeches/English/PM-BAINIMARAMA-S-COVID-19-ANNOUNCEMENT-10-10-21
+# https://www.fbcnews.com.fj/news/covid-19/curfew-moved-back-to-11pm/
+# In a 2021-10-10 speech concerning updated Covid-19 mitigation measures in
+# Fiji, prime minister Josaia Voreqe "Frank" Bainimarama announced the
+# suspension of DST for the 2021/2022 season: "Given that we are in the process
+# of readjusting in the midst of so many changes, we will also put Daylight
+# Savings Time on hold for this year. It will also make the reopening of
+# scheduled commercial air service much smoother if we don't have to be
+# concerned shifting arrival and departure times, which may look like a simple
+# thing but requires some significant logistical adjustments domestically and
+# internationally."
+# Assume for now that DST will resume with the recent pre-2020 rules for the
+# 2022/2023 season.
 
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule	Fiji	1998	1999	-	Nov	Sun>=1	2:00	1:00	-
@@ -399,10 +412,11 @@ Rule	Fiji	2011	only	-	Mar	Sun>=1	3:00	0	-
 Rule	Fiji	2012	2013	-	Jan	Sun>=18	3:00	0	-
 Rule	Fiji	2014	only	-	Jan	Sun>=18	2:00	0	-
 Rule	Fiji	2014	2018	-	Nov	Sun>=1	2:00	1:00	-
-Rule	Fiji	2015	max	-	Jan	Sun>=12	3:00	0	-
+Rule	Fiji	2015	2021	-	Jan	Sun>=12	3:00	0	-
 Rule	Fiji	2019	only	-	Nov	Sun>=8	2:00	1:00	-
 Rule	Fiji	2020	only	-	Dec	20	2:00	1:00	-
-Rule	Fiji	2021	max	-	Nov	Sun>=8	2:00	1:00	-
+Rule	Fiji	2022	max	-	Nov	Sun>=8	2:00	1:00	-
+Rule	Fiji	2023	max	-	Jan	Sun>=12	3:00	0	-
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Fiji	11:55:44 -	LMT	1915 Oct 26 # Suva
 			12:00	Fiji	+12/+13