# Copyright (C) 2016 and later: Unicode, Inc. and others.
# License & terms of use: http://www.unicode.org/copyright.html
######################################################################
# Copyright (C) 2007-2014, International Business Machines
# Corporation and others.  All Rights Reserved.
######################################################################
# This is an ICU-specific file with the same format as regular
# tzdata time zone files, for consistent parsing by the tools that
# turn "Olson" tzdata into ICU's zoneinfo.txt.
# The purpose of this file is to give ICU a superset of the time zones
# that are in CLDR and also include legacy ICU time zones originally
# in tz.alias for rataining backward compatibility.

# Add Etc/Unknown, defined by CLDR. Give it Etc/GMT behavior.

# Zone	NAME		GMTOFF	RULES	FORMAT
Zone	Etc/Unknown	0	-	Unknown

# SystemV time zones.
# The Olson systemv file has these commented out.

# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
Zone	SystemV/AST4	-4:00	-		AST
Zone	SystemV/EST5	-5:00	-		EST
Zone	SystemV/CST6	-6:00	-		CST
Zone	SystemV/MST7	-7:00	-		MST
Zone	SystemV/PST8	-8:00	-		PST
Zone	SystemV/YST9	-9:00	-		YST
Zone	SystemV/HST10	-10:00	-		HST


# The list below is for supporting legacy ICU zone aliases.
# These definitions were originally defined in tz.alias.

#### Aliases that conflict with Olson compatibility Zone definition

Link Australia/Darwin ACT
Link Australia/Sydney AET
Link America/Argentina/Buenos_Aires AGT
Link Africa/Cairo ART
Link America/Anchorage AST
Link America/Sao_Paulo BET
Link Asia/Dhaka BST
Link Africa/Maputo CAT
Link America/St_Johns CNT
Link America/Chicago CST
Link Asia/Shanghai CTT
Link Africa/Addis_Ababa EAT
Link Europe/Paris ECT
#Link Europe/Istanbul EET # EET is a standard UNIX zone
####Link EST America/New_York EST # Defined as -05:00
####Link Pacific/Honolulu HST # Defined as -10:00
Link America/Indiana/Indianapolis IET
Link Asia/Kolkata IST
Link Asia/Tokyo JST
#Link Asia/Tehran MET # MET is a standard UNIX zone
Link Pacific/Apia MIT
####Link America/Denver MST # Defined as -07:00
Link Asia/Yerevan NET
Link Pacific/Auckland NST
Link Asia/Karachi PLT
Link America/Phoenix PNT
Link America/Puerto_Rico PRT
Link America/Los_Angeles PST
Link Pacific/Guadalcanal SST
#Link Etc/UTC UTC # Olson LINK
Link Asia/Ho_Chi_Minh VST

#
# Aliases already dropped from the TZ database.
# ICU may also remove these aliases.
#
Link America/Regina Canada/East-Saskatchewan # removed from backward in 2017c


# Note:
#   Following section was added for tz database 2018a and 2018b.
# ICU has a bug handling negative DST, and we also don't want to
# flip sumer time name and winter time name for Dublin at least for
# now. Because the change had major impacts to tz database external
# consumers, the tz database maintainer once reverted the Europe/Dublin
# rules (same as 2017c or older) in 2018c. The tz database maintainer
# thinks the changes in 2018a should be brought back when external
# tz database consumers are ready to adopt the change. We don't know
# what CLDR TC want to do with this for now. But if tz database brings
# back the change, and CLDR TC (and ICU TC) want to keep the display name
# unchanged, then we can uncomment the block below to restore ICU
# custom override. (Yoshito 2018-01-23)

#
# tzdata2018a changed Europe/Dublin to use IST (UTC+1) as the standard time
# of the region, and GMT (UTC) as the daylight saving time with negative
# offset (-1 hour) in winter. ICU SimpleTimeZone rejects a zone with negative
# daylight saving time offset. We could remove the restriction in newer version
# of ICU, but such data does not work well with older ICU runtime without
# fixing the issue. For now, we define our own Europe/Dubin in ICU, replacing
# Europe/Dublin data from the tz database.
#

#
# tzdata2018e suggests to use alternative zone definitions for use GB-Eire
# and EU rule after Oct 27, 1968. (Yoshito 2018-05-04)
#

# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Europe/Dublin--ICU	-0:25:00 -	LMT	1880 Aug  2
			-0:25:21 -	DMT	1916 May 21  2:00s
			-0:25:21 1:00	IST	1916 Oct  1  2:00s
			 0:00	GB-Eire	%s	1921 Dec  6 # independence
			 0:00	GB-Eire	GMT/IST	1940 Feb 25  2:00s
			 0:00	1:00	IST	1946 Oct  6  2:00s
			 0:00	-	GMT	1947 Mar 16  2:00s
			 0:00	1:00	IST	1947 Nov  2  2:00s
			 0:00	-	GMT	1948 Apr 18  2:00s
			 0:00	GB-Eire	GMT/IST	1968 Oct 27
# The next line is for when negative SAVE values are used.
#			 1:00	Eire	IST/GMT
# These three lines are for when SAVE values are always nonnegative.
			 1:00	-	IST	1971 Oct 31  2:00u
			 0:00	GB-Eire	GMT/IST	1996
			 0:00	EU	GMT/IST

Link Europe/Dublin--ICU Eire--ICU


#
# tzdata2018e also added another instance of negative DST to
# Europe/Prague and Africa/Windhoek
#
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Europe/Prague--ICU	0:57:44 -	LMT	1850
			0:57:44	-	PMT	1891 Oct    # Prague Mean Time
			1:00	C-Eur	CE%sT	1945 May  9
			1:00	Czech	CE%sT	1946 Dec  1  3:00
# Vanguard section, for zic and other parsers that support negative DST.
#			1:00	-1:00	GMT	1947 Feb 23  2:00
# Rearguard section, for parsers that do not support negative DST.
			0:00	-	GMT	1947 Feb 23  2:00
# End of rearguard section.
			1:00	Czech	CE%sT	1979
			1:00	EU	CE%sT

# Slovakia
Link Europe/Prague--ICU Europe/Bratislava--ICU

# RULE	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
# Vanguard section, for zic and other parsers that support negative DST.
#Rule	Namibia	1994	only	-	Mar	21	0:00	-1:00	WAT
#Rule	Namibia	1994	2017	-	Sep	Sun>=1	2:00	0	CAT
#Rule	Namibia	1995	2017	-	Apr	Sun>=1	2:00	-1:00	WAT
# Rearguard section, for parsers that do not support negative DST.
Rule	Namibia--ICU	1994	only	-	Mar	21	0:00	0	WAT
Rule	Namibia--ICU	1994	2017	-	Sep	Sun>=1	2:00	1:00	CAT
Rule	Namibia--ICU	1995	2017	-	Apr	Sun>=1	2:00	0	WAT

# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Africa/Windhoek--ICU	1:08:24 -	LMT	1892 Feb 8
			1:30	-	+0130	1903 Mar
			2:00	-	SAST	1942 Sep 20  2:00
			2:00	1:00	SAST	1943 Mar 21  2:00
			2:00	-	SAST	1990 Mar 21 # independence
# Vanguard section, for zic and other parsers that support negative DST.
#			2:00	Namibia	%s
# Rearguard section, for parsers that do not support negative DST.
			2:00	-	CAT	1994 Mar 21  0:00
# From Paul Eggert (2017-04-07):
# The official date of the 2017 rule change was 2017-10-24.  See:
# http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf
			1:00	Namibia--ICU	%s	2017 Oct 24
			2:00	-	CAT
# End of rearguard section.
