Backport timezone data format change

This backports the below commit which moved from the source timezone
file to the newly introduced compact format.

  commit 097b24cea68ac167a82bb617eb1844c8be4eaf24
  Author: Tom Lane <tgl@sss.pgh.pa.us>
  Date:   Sat Nov 25 15:30:11 2017 -0500

    Replace raw timezone source data with IANA's new compact format.

    Traditionally IANA has distributed their timezone data in pure source
    form, replete with extensive historical comments.  As of release 2017c,
    they've added a compact single-file format that omits comments and
    abbreviates command keywords.  This form is way shorter than the pure
    source, even before considering its allegedly better compressibility.
    Hence, let's distribute the data in that form rather than pure source.

    I'm pushing this now, rather than at the next timezone database update,
    so that it's easy to confirm that this data file produces compiled zic
    output that's identical to what we were getting before.

    Discussion: https://postgr.es/m/1915.1511210334@sss.pgh.pa.us

Backported from master.

src/timezone/Makefile

@@ -22,10 +22,8 @@ OBJS += gptime.o
 # files needed to build zic utility program
 ZICOBJS= zic.o $(WIN32RES)
 
-# timezone data files
-TZDATA = africa antarctica asia australasia europe northamerica southamerica \
-	pacificnew etcetera factory backward systemv
-TZDATAFILES = $(TZDATA:%=$(srcdir)/data/%)
+# we now distribute the timezone data as a single file
+TZDATAFILES = $(srcdir)/data/tzdata.zi
 
 # which zone should determine the DST rules (not the specific UTC offset!)
 # for POSIX-style timezone specs

src/timezone/README

@@ -2,10 +2,12 @@ src/timezone/README
 
 This is a PostgreSQL adapted version of the IANA timezone library from
 
-	http://www.iana.org/time-zones
+	https://www.iana.org/time-zones
 
-The latest versions of both the tzdata and tzcode tarballs are normally
-available right from that page.  Historical versions can be found
+The latest version of the timezone data and library source code is
+available right from that page.  It's best to get the merged file
+tzdb-NNNNX.tar.lz, since the other archive formats omit tzdata.zi.
+Historical versions, as well as release announcements, can be found
 elsewhere on the site.
 
 Since time zone rules change frequently in some parts of the world,
@@ -17,11 +19,14 @@ changes that might affect interpretation of the data files.
 Time Zone data
 ==============
 
-The data files under data/ are an exact copy of the latest tzdata set,
-except that we omit some files that are not of interest for our purposes.
+We distribute the time zone source data as-is under src/timezone/data/.
+Currently, we distribute just the abbreviated single-file format
+"tzdata.zi", to reduce the size of our tarballs as well as churn
+in our git repo.  Feeding that file to zic produces the same compiled
+output as feeding the bulkier individual data files would do.
 
-While the files under data/ can just be duplicated when updating, manual
-effort is needed to update the time zone abbreviation lists under tznames/.
+While data/tzdata.zi can just be duplicated when updating, manual effort
+is needed to update the time zone abbreviation lists under tznames/.
 These need to be changed whenever new abbreviations are invented or the
 UTC offset associated with an existing abbreviation changes.  To detect
 if this has happened, after installing new files under data/ do

src/timezone/data/antarctica

-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# From Paul Eggert (1999-11-15):
-# To keep things manageable, we list only locations occupied year-round; see
-# COMNAP - Stations and Bases
-# http://www.comnap.aq/comnap/comnap.nsf/P/Stations/
-# and
-# Summary of the Peri-Antarctic Islands (1998-07-23)
-# http://www.spri.cam.ac.uk/bob/periant.htm
-# for information.
-# Unless otherwise specified, we have no time zone information.
-
-# FORMAT is '-00' and GMTOFF is 0 for locations while uninhabited.
-
-# Argentina - year-round bases
-# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
-# Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01
-# Esperanza, Hope Bay, -6323-05659, since 1952-12-17
-# Marambio, -6414-05637, since 1969-10-29
-# Orcadas, Laurie I, -6016-04444, since 1904-02-22
-# San Martín, Barry I, -6808-06706, since 1951-03-21
-#	(except 1960-03 / 1976-03-21)
-
-# Australia - territories
-# Heard Island, McDonald Islands (uninhabited)
-#	previously sealers and scientific personnel wintered
-#	Margaret Turner reports
-#	https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html
-#	(1999-09-30) that they're UT +05, with no DST;
-#	presumably this is when they have visitors.
-#
-# year-round bases
-# Casey, Bailey Peninsula, -6617+11032, since 1969
-# Davis, Vestfold Hills, -6835+07759, since 1957-01-13
-#	(except 1964-11 - 1969-02)
-# Mawson, Holme Bay, -6736+06253, since 1954-02-13
-
-# From Steffen Thorsen (2009-03-11):
-# Three Australian stations in Antarctica have changed their time zone:
-# Casey moved from UTC+8 to UTC+11
-# Davis moved from UTC+7 to UTC+5
-# Mawson moved from UTC+6 to UTC+5
-# The changes occurred on 2009-10-18 at 02:00 (local times).
-#
-# Government source: (Australian Antarctic Division)
-# http://www.aad.gov.au/default.asp?casid=37079
-#
-# We have more background information here:
-# https://www.timeanddate.com/news/time/antarctica-new-times.html
-
-# From Steffen Thorsen (2010-03-10):
-# We got these changes from the Australian Antarctic Division: ...
-#
-# - Casey station reverted to its normal time of UTC+8 on 5 March 2010.
-# The change to UTC+11 is being considered as a regular summer thing but
-# has not been decided yet.
-#
-# - Davis station will revert to its normal time of UTC+7 at 10 March 2010
-# 20:00 UTC.
-#
-# - Mawson station stays on UTC+5.
-#
-# Background:
-# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html
-
-# From Steffen Thorsen (2016-10-28):
-# Australian Antarctica Division informed us that Casey changed time
-# zone to UTC+11 in "the morning of 22nd October 2016".
-
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Casey	0	-	-00	1969
-			8:00	-	+08	2009 Oct 18  2:00
-			11:00	-	+11	2010 Mar  5  2:00
-			8:00	-	+08	2011 Oct 28  2:00
-			11:00	-	+11	2012 Feb 21 17:00u
-			8:00	-	+08	2016 Oct 22
-			11:00	-	+11
-Zone Antarctica/Davis	0	-	-00	1957 Jan 13
-			7:00	-	+07	1964 Nov
-			0	-	-00	1969 Feb
-			7:00	-	+07	2009 Oct 18  2:00
-			5:00	-	+05	2010 Mar 10 20:00u
-			7:00	-	+07	2011 Oct 28  2:00
-			5:00	-	+05	2012 Feb 21 20:00u
-			7:00	-	+07
-Zone Antarctica/Mawson	0	-	-00	1954 Feb 13
-			6:00	-	+06	2009 Oct 18  2:00
-			5:00	-	+05
-# References:
-# Casey Weather (1998-02-26)
-# http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html
-# Davis Station, Antarctica (1998-02-26)
-# http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html
-# Mawson Station, Antarctica (1998-02-25)
-# http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html
-
-# Belgium - year-round base
-# Princess Elisabeth, Queen Maud Land, -713412+0231200, since 2007
-
-# Brazil - year-round base
-# Ferraz, King George Island, -6205+05824, since 1983/4
-
-# Bulgaria - year-round base
-# St. Kliment Ohridski, Livingston Island, -623829-0602153, since 1988
-
-# Chile - year-round bases and towns
-# Escudero, South Shetland Is, -621157-0585735, since 1994
-# Frei Montalva, King George Island, -6214-05848, since 1969-03-07
-# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02
-# Prat, -6230-05941
-# Villa Las Estrellas (a town), around the Frei base, since 1984-04-09
-# These locations employ Region of Magallanes time; use
-# TZ='America/Punta_Arenas'.
-
-# China - year-round bases
-# Great Wall, King George Island, -6213-05858, since 1985-02-20
-# Zhongshan, Larsemann Hills, Prydz Bay, -6922+07623, since 1989-02-26
-
-# France - year-round bases (also see "France & Italy")
-#
-# From Antoine Leca (1997-01-20):
-# Time data entries are from Nicole Pailleau at the IFRTP
-# (French Institute for Polar Research and Technology).
-# She confirms that French Southern Territories and Terre Adélie bases
-# don't observe daylight saving time, even if Terre Adélie supplies came
-# from Tasmania.
-#
-# French Southern Territories with year-round inhabitants
-#
-# Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964;
-#	sealing & whaling stations operated variously 1802/1911+;
-#	see Indian/Reunion.
-#
-# Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950
-# Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951;
-#	whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956
-#
-# St Paul Island - near Amsterdam, uninhabited
-#	fishing stations operated variously 1819/1931
-#
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Indian/Kerguelen	0	-	-00	1950 # Port-aux-Français
-			5:00	-	+05
-#
-# year-round base in the main continent
-# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11
-# <https://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05)
-#
-# Another base at Port-Martin, 50km east, began operation in 1947.
-# It was destroyed by fire on 1952-01-14.
-#
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/DumontDUrville 0 -	-00	1947
-			10:00	-	+10	1952 Jan 14
-			0	-	-00	1956 Nov
-			10:00	-	+10
-
-# France & Italy - year-round base
-# Concordia, -750600+1232000, since 2005
-
-# Germany - year-round base
-# Neumayer III, -704080-0081602, since 2009
-
-# India - year-round bases
-# Bharati, -692428+0761114, since 2012
-# Maitri, -704558+0114356, since 1989
-
-# Italy - year-round base (also see "France & Italy")
-# Zuchelli, Terra Nova Bay, -744140+1640647, since 1986
-
-# Japan - year-round bases
-# Syowa (also known as Showa), -690022+0393524, since 1957
-#
-# From Hideyuki Suzuki (1999-02-06):
-# In all Japanese stations, +0300 is used as the standard time.
-#
-# Syowa station, which is the first antarctic station of Japan,
-# was established on 1957-01-29.  Since Syowa station is still the main
-# station of Japan, it's appropriate for the principal location.
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Syowa	0	-	-00	1957 Jan 29
-			3:00	-	+03
-# See:
-# NIPR Antarctic Research Activities (1999-08-17)
-# http://www.nipr.ac.jp/english/ara01.html
-
-# S Korea - year-round base
-# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014
-# King Sejong, King George Island, -6213-05847, since 1988
-
-# New Zealand - claims
-# Balleny Islands (never inhabited)
-# Scott Island (never inhabited)
-#
-# year-round base
-# Scott Base, Ross Island, since 1957-01.
-# See Pacific/Auckland.
-
-# Norway - territories
-# Bouvet (never inhabited)
-#
-# claims
-# Peter I Island (never inhabited)
-#
-# year-round base
-# Troll, Queen Maud Land, -720041+0023206, since 2005-02-12
-#
-# From Paul-Inge Flakstad (2014-03-10):
-# I recently had a long dialog about this with the developer of timegenie.com.
-# In the absence of specific dates, he decided to choose some likely ones:
-#   GMT +1 - From March 1 to the last Sunday in March
-#   GMT +2 - From the last Sunday in March until the last Sunday in October
-#   GMT +1 - From the last Sunday in October until November 7
-#   GMT +0 - From November 7 until March 1
-# The dates for switching to and from UTC+0 will probably not be absolutely
-# correct, but they should be quite close to the actual dates.
-#
-# From Paul Eggert (2014-03-21):
-# The CET-switching Troll rules require zic from tz 2014b or later, so as
-# suggested by Bengt-Inge Larsson comment them out for now, and approximate
-# with only UTC and CEST.  Uncomment them when 2014b is more prevalent.
-#
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-#Rule	Troll	2005	max	-	Mar	 1	1:00u	1:00	+01
-Rule	Troll	2005	max	-	Mar	lastSun	1:00u	2:00	+02
-#Rule	Troll	2005	max	-	Oct	lastSun	1:00u	1:00	+01
-#Rule	Troll	2004	max	-	Nov	 7	1:00u	0:00	+00
-# Remove the following line when uncommenting the above '#Rule' lines.
-Rule	Troll	2004	max	-	Oct	lastSun	1:00u	0:00	+00
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Troll	0	-	-00	2005 Feb 12
-			0:00	Troll	%s
-
-# Poland - year-round base
-# Arctowski, King George Island, -620945-0582745, since 1977
-
-# Romania - year-bound base
-# Law-Racoviță, Larsemann Hills, -692319+0762251, since 1986
-
-# Russia - year-round bases
-# Bellingshausen, King George Island, -621159-0585337, since 1968-02-22
-# Mirny, Davis coast, -6633+09301, since 1956-02
-# Molodezhnaya, Alasheyev Bay, -6740+04551,
-#	year-round from 1962-02 to 1999-07-01
-# Novolazarevskaya, Queen Maud Land, -7046+01150,
-#	year-round from 1960/61 to 1992
-
-# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11
-# From Craig Mundell (1994-12-15):
-# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP
-# Vostok, which is one of the Russian stations, is set on the same
-# time as Moscow, Russia.
-#
-# From Lee Hotz (2001-03-08):
-# I queried the folks at Columbia who spent the summer at Vostok and this is
-# what they had to say about time there:
-# "in the US Camp (East Camp) we have been on New Zealand (McMurdo)
-# time, which is 12 hours ahead of GMT. The Russian Station Vostok was
-# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead
-# of GMT). This is a time zone I think two hours east of Moscow. The
-# natural time zone is in between the two: 8 hours ahead of GMT."
-#
-# From Paul Eggert (2001-05-04):
-# This seems to be hopelessly confusing, so I asked Lee Hotz about it
-# in person.  He said that some Antarctic locations set their local
-# time so that noon is the warmest part of the day, and that this
-# changes during the year and does not necessarily correspond to mean
-# solar noon.  So the Vostok time might have been whatever the clocks
-# happened to be during their visit.  So we still don't really know what time
-# it is at Vostok.  But we'll guess +06.
-#
-Zone Antarctica/Vostok	0	-	-00	1957 Dec 16
-			6:00	-	+06
-
-# S Africa - year-round bases
-# Marion Island, -4653+03752
-# SANAE IV, Vesleskarvet, Queen Maud Land, -714022-0025026, since 1997
-
-# Ukraine - year-round base
-# Vernadsky (formerly Faraday), Galindez Island, -651445-0641526, since 1954
-
-# United Kingdom
-#
-# British Antarctic Territories (BAT) claims
-# South Orkney Islands
-#	scientific station from 1903
-#	whaling station at Signy I 1920/1926
-# South Shetland Islands
-#
-# year-round bases
-# Bird Island, South Georgia, -5400-03803, since 1983
-# Deception Island, -6259-06034, whaling station 1912/1931,
-#	scientific station 1943/1967,
-#	previously sealers and a scientific expedition wintered by accident,
-#	and a garrison was deployed briefly
-# Halley, Coates Land, -7535-02604, since 1956-01-06
-#	Halley is on a moving ice shelf and is periodically relocated
-#	so that it is never more than 10km from its nominal location.
-# Rothera, Adelaide Island, -6734-6808, since 1976-12-01
-#
-# From Paul Eggert (2002-10-22)
-# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year.
-#
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Antarctica/Rothera	0	-	-00	1976 Dec  1
-			-3:00	-	-03
-
-# Uruguay - year round base
-# Artigas, King George Island, -621104-0585107
-
-# USA - year-round bases
-#
-# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
-# See 'southamerica' for Antarctica/Palmer, since it uses South American DST.
-#
-# McMurdo Station, Ross Island, since 1955-12
-# Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20
-#
-# From Chris Carrier (1996-06-27):
-# Siple, the first commander of the South Pole station,
-# stated that he would have liked to have kept GMT at the station,
-# but that he found it more convenient to keep GMT+12
-# as supplies for the station were coming from McMurdo Sound,
-# which was on GMT+12 because New Zealand was on GMT+12 all year
-# at that time (1957).  (Source: Siple's book 90 Degrees South.)
-#
-# From Susan Smith
-# http://www.cybertours.com/whs/pole10.html
-# (1995-11-13 16:24:56 +1300, no longer available):
-# We use the same time as McMurdo does.
-# And they use the same time as Christchurch, NZ does....
-# One last quirk about South Pole time.
-# All the electric clocks are usually wrong.
-# Something about the generators running at 60.1hertz or something
-# makes all of the clocks run fast.  So every couple of days,
-# we have to go around and set them back 5 minutes or so.
-# Maybe if we let them run fast all of the time, we'd get to leave here sooner!!
-#
-# See 'australasia' for Antarctica/McMurdo.

src/timezone/data/backward

-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# This file provides links between current names for time zones
-# and their old names.  Many names changed in late 1993.
-
-# Link	TARGET			LINK-NAME
-Link	Africa/Nairobi		Africa/Asmera
-Link	Africa/Abidjan		Africa/Timbuktu
-Link	America/Argentina/Catamarca	America/Argentina/ComodRivadavia
-Link	America/Adak		America/Atka
-Link	America/Argentina/Buenos_Aires	America/Buenos_Aires
-Link	America/Argentina/Catamarca	America/Catamarca
-Link	America/Atikokan	America/Coral_Harbour
-Link	America/Argentina/Cordoba	America/Cordoba
-Link	America/Tijuana		America/Ensenada
-Link	America/Indiana/Indianapolis	America/Fort_Wayne
-Link	America/Indiana/Indianapolis	America/Indianapolis
-Link	America/Argentina/Jujuy	America/Jujuy
-Link	America/Indiana/Knox	America/Knox_IN
-Link	America/Kentucky/Louisville	America/Louisville
-Link	America/Argentina/Mendoza	America/Mendoza
-Link	America/Toronto		America/Montreal
-Link	America/Rio_Branco	America/Porto_Acre
-Link	America/Argentina/Cordoba	America/Rosario
-Link	America/Tijuana		America/Santa_Isabel
-Link	America/Denver		America/Shiprock
-Link	America/Port_of_Spain	America/Virgin
-Link	Pacific/Auckland	Antarctica/South_Pole
-Link	Asia/Ashgabat		Asia/Ashkhabad
-Link	Asia/Kolkata		Asia/Calcutta
-Link	Asia/Shanghai		Asia/Chongqing
-Link	Asia/Shanghai		Asia/Chungking
-Link	Asia/Dhaka		Asia/Dacca
-Link	Asia/Shanghai		Asia/Harbin
-Link	Asia/Urumqi		Asia/Kashgar
-Link	Asia/Kathmandu		Asia/Katmandu
-Link	Asia/Macau		Asia/Macao
-Link	Asia/Yangon		Asia/Rangoon
-Link	Asia/Ho_Chi_Minh	Asia/Saigon
-Link	Asia/Jerusalem		Asia/Tel_Aviv
-Link	Asia/Thimphu		Asia/Thimbu
-Link	Asia/Makassar		Asia/Ujung_Pandang
-Link	Asia/Ulaanbaatar	Asia/Ulan_Bator
-Link	Atlantic/Faroe		Atlantic/Faeroe
-Link	Europe/Oslo		Atlantic/Jan_Mayen
-Link	Australia/Sydney	Australia/ACT
-Link	Australia/Sydney	Australia/Canberra
-Link	Australia/Lord_Howe	Australia/LHI
-Link	Australia/Sydney	Australia/NSW
-Link	Australia/Darwin	Australia/North
-Link	Australia/Brisbane	Australia/Queensland
-Link	Australia/Adelaide	Australia/South
-Link	Australia/Hobart	Australia/Tasmania
-Link	Australia/Melbourne	Australia/Victoria
-Link	Australia/Perth		Australia/West
-Link	Australia/Broken_Hill	Australia/Yancowinna
-Link	America/Rio_Branco	Brazil/Acre
-Link	America/Noronha		Brazil/DeNoronha
-Link	America/Sao_Paulo	Brazil/East
-Link	America/Manaus		Brazil/West
-Link	America/Halifax		Canada/Atlantic
-Link	America/Winnipeg	Canada/Central
-# This line is commented out, as the name exceeded the 14-character limit
-# and was an unused misnomer.
-#Link	America/Regina		Canada/East-Saskatchewan
-Link	America/Toronto		Canada/Eastern
-Link	America/Edmonton	Canada/Mountain
-Link	America/St_Johns	Canada/Newfoundland
-Link	America/Vancouver	Canada/Pacific
-Link	America/Regina		Canada/Saskatchewan
-Link	America/Whitehorse	Canada/Yukon
-Link	America/Santiago	Chile/Continental
-Link	Pacific/Easter		Chile/EasterIsland
-Link	America/Havana		Cuba
-Link	Africa/Cairo		Egypt
-Link	Europe/Dublin		Eire
-Link	Europe/London		Europe/Belfast
-Link	Europe/Chisinau		Europe/Tiraspol
-Link	Europe/London		GB
-Link	Europe/London		GB-Eire
-Link	Etc/GMT			GMT+0
-Link	Etc/GMT			GMT-0
-Link	Etc/GMT			GMT0
-Link	Etc/GMT			Greenwich
-Link	Asia/Hong_Kong		Hongkong
-Link	Atlantic/Reykjavik	Iceland
-Link	Asia/Tehran		Iran
-Link	Asia/Jerusalem		Israel
-Link	America/Jamaica		Jamaica
-Link	Asia/Tokyo		Japan
-Link	Pacific/Kwajalein	Kwajalein
-Link	Africa/Tripoli		Libya
-Link	America/Tijuana		Mexico/BajaNorte
-Link	America/Mazatlan	Mexico/BajaSur
-Link	America/Mexico_City	Mexico/General
-Link	Pacific/Auckland	NZ
-Link	Pacific/Chatham		NZ-CHAT
-Link	America/Denver		Navajo
-Link	Asia/Shanghai		PRC
-Link	Pacific/Honolulu	Pacific/Johnston
-Link	Pacific/Pohnpei		Pacific/Ponape
-Link	Pacific/Pago_Pago	Pacific/Samoa
-Link	Pacific/Chuuk		Pacific/Truk
-Link	Pacific/Chuuk		Pacific/Yap
-Link	Europe/Warsaw		Poland
-Link	Europe/Lisbon		Portugal
-Link	Asia/Taipei		ROC
-Link	Asia/Seoul		ROK
-Link	Asia/Singapore		Singapore
-Link	Europe/Istanbul		Turkey
-Link	Etc/UCT			UCT
-Link	America/Anchorage	US/Alaska
-Link	America/Adak		US/Aleutian
-Link	America/Phoenix		US/Arizona
-Link	America/Chicago		US/Central
-Link	America/Indiana/Indianapolis	US/East-Indiana
-Link	America/New_York	US/Eastern
-Link	Pacific/Honolulu	US/Hawaii
-Link	America/Indiana/Knox	US/Indiana-Starke
-Link	America/Detroit		US/Michigan
-Link	America/Denver		US/Mountain
-Link	America/Los_Angeles	US/Pacific
-Link	Pacific/Pago_Pago	US/Samoa
-Link	Etc/UTC			UTC
-Link	Etc/UTC			Universal
-Link	Europe/Moscow		W-SU
-Link	Etc/UTC			Zulu

src/timezone/data/etcetera

-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# These entries are mostly present for historical reasons, so that
-# people in areas not otherwise covered by the tz files could "zic -l"
-# to a time zone that was right for their area.  These days, the
-# tz files cover almost all the inhabited world, and the only practical
-# need now for the entries that are not on UTC are for ships at sea
-# that cannot use POSIX TZ settings.
-
-# Starting with POSIX 1003.1-2001, the entries below are all
-# unnecessary as settings for the TZ environment variable.  E.g.,
-# instead of TZ='Etc/GMT+4' one can use the POSIX setting TZ='<-04>+4'.
-#
-# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours
-# behind GMT but uses the completely misleading abbreviation "GMT".
-
-Zone	Etc/GMT		0	-	GMT
-Zone	Etc/UTC		0	-	UTC
-Zone	Etc/UCT		0	-	UCT
-
-# The following link uses older naming conventions,
-# but it belongs here, not in the file 'backward',
-# as functions like gmtime load the "GMT" file to handle leap seconds properly.
-# We want this to work even on installations that omit the other older names.
-Link	Etc/GMT				GMT
-
-Link	Etc/UTC				Etc/Universal
-Link	Etc/UTC				Etc/Zulu
-
-Link	Etc/GMT				Etc/Greenwich
-Link	Etc/GMT				Etc/GMT-0
-Link	Etc/GMT				Etc/GMT+0
-Link	Etc/GMT				Etc/GMT0
-
-# Be consistent with POSIX TZ settings in the Zone names,
-# even though this is the opposite of what many people expect.
-# POSIX has positive signs west of Greenwich, but many people expect
-# positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
-# the abbreviation "-04" and corresponds to 4 hours behind UT
-# (i.e. west of Greenwich) even though many people would expect it to
-# mean 4 hours ahead of UT (i.e. east of Greenwich).
-
-# Earlier incarnations of this package were not POSIX-compliant,
-# and had lines such as
-#		Zone	GMT-12		-12	-	GMT-1200
-# We did not want things to change quietly if someone accustomed to the old
-# way does a
-#		zic -l GMT-12
-# so we moved the names into the Etc subdirectory.
-# Also, the time zone abbreviations are now compatible with %z.
-
-Zone	Etc/GMT-14	14	-	+14
-Zone	Etc/GMT-13	13	-	+13
-Zone	Etc/GMT-12	12	-	+12
-Zone	Etc/GMT-11	11	-	+11
-Zone	Etc/GMT-10	10	-	+10
-Zone	Etc/GMT-9	9	-	+09
-Zone	Etc/GMT-8	8	-	+08
-Zone	Etc/GMT-7	7	-	+07
-Zone	Etc/GMT-6	6	-	+06
-Zone	Etc/GMT-5	5	-	+05
-Zone	Etc/GMT-4	4	-	+04
-Zone	Etc/GMT-3	3	-	+03
-Zone	Etc/GMT-2	2	-	+02
-Zone	Etc/GMT-1	1	-	+01
-Zone	Etc/GMT+1	-1	-	-01
-Zone	Etc/GMT+2	-2	-	-02
-Zone	Etc/GMT+3	-3	-	-03
-Zone	Etc/GMT+4	-4	-	-04
-Zone	Etc/GMT+5	-5	-	-05
-Zone	Etc/GMT+6	-6	-	-06
-Zone	Etc/GMT+7	-7	-	-07
-Zone	Etc/GMT+8	-8	-	-08
-Zone	Etc/GMT+9	-9	-	-09
-Zone	Etc/GMT+10	-10	-	-10
-Zone	Etc/GMT+11	-11	-	-11
-Zone	Etc/GMT+12	-12	-	-12

src/timezone/data/factory

-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# For distributors who don't want to put time zone specification in
-# their installation procedures.  Users that run 'date' will get the
-# time zone abbreviation "-00", indicating that the actual time zone
-# is unknown.
-
-# Zone	NAME	GMTOFF	RULES	FORMAT
-Zone	Factory	0	-	-00

src/timezone/data/pacificnew

-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# From Arthur David Olson (1989-04-05):
-# On 1989-04-05, the U. S. House of Representatives passed (238-154) a bill
-# establishing "Pacific Presidential Election Time"; it was not acted on
-# by the Senate or signed into law by the President.
-# You might want to change the "PE" (Presidential Election) below to
-# "Q" (Quadrennial) to maintain three-character zone abbreviations.
-# If you're really conservative, you might want to change it to "D".
-# Avoid "L" (Leap Year), which won't be true in 2100.
-
-# If Presidential Election Time is ever established, replace "XXXX" below
-# with the year the law takes effect and uncomment the "##" lines.
-
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-## Rule	Twilite	XXXX	max	-	Apr	Sun>=1	2:00	1:00	D
-## Rule	Twilite	XXXX	max	uspres	Oct	lastSun	2:00	1:00	PE
-## Rule	Twilite	XXXX	max	uspres	Nov	Sun>=7	2:00	0	S
-## Rule	Twilite	XXXX	max	nonpres	Oct	lastSun	2:00	0	S
-
-# Zone	NAME			GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
-## Zone	America/Los_Angeles-PET	-8:00	US		P%sT	XXXX
-##				-8:00	Twilite		P%sT
-
-# For now...
-Link	America/Los_Angeles	US/Pacific-New	##