1# Copyright (C) 2016 and later: Unicode, Inc. and others.
2# License & terms of use: http://www.unicode.org/copyright.html
3######################################################################
4# Copyright (C) 2007-2014, International Business Machines
5# Corporation and others.  All Rights Reserved.
6######################################################################
7# This is an ICU-specific file with the same format as regular
8# tzdata time zone files, for consistent parsing by the tools that
9# turn "Olson" tzdata into ICU's zoneinfo.txt.
10# The purpose of this file is to give ICU a superset of the time zones
11# that are in CLDR and also include legacy ICU time zones originally
12# in tz.alias for rataining backward compatibility.
13
14# Add Etc/Unknown, defined by CLDR. Give it Etc/GMT behavior.
15
16# Zone	NAME		GMTOFF	RULES	FORMAT
17Zone	Etc/Unknown	0	-	Unknown
18
19# SystemV time zones.
20# IANA tzdb file 'systemv' file has these SystemV/* zones commented out up to 2020a.
21# 'systemv' file was removed in 2020b. We keep them in this supplemental zone data
22# file for compatibility purpose.
23
24# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
25Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
26Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
27Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
28Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
29Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
30Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
31Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
32Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
33
34# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
35Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
36Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
37Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
38Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
39Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
40Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
41Zone	SystemV/AST4	-4:00	-		AST
42Zone	SystemV/EST5	-5:00	-		EST
43Zone	SystemV/CST6	-6:00	-		CST
44Zone	SystemV/MST7	-7:00	-		MST
45Zone	SystemV/PST8	-8:00	-		PST
46Zone	SystemV/YST9	-9:00	-		YST
47Zone	SystemV/HST10	-10:00	-		HST
48
49# pacificnew
50# IANA tzdb file 'pacificnew' used to contain a Link for US/Pacific-New.
51# 'pacificnew' file was removed in 2020b. We keep the Link here for compatibility.
52Link America/Los_Angeles US/Pacific-New
53
54
55# The list below is for supporting legacy ICU zone aliases.
56# These definitions were originally defined in tz.alias.
57
58#### Aliases that conflict with Olson compatibility Zone definition
59
60Link Australia/Darwin ACT
61Link Australia/Sydney AET
62Link America/Argentina/Buenos_Aires AGT
63Link Africa/Cairo ART
64Link America/Anchorage AST
65Link America/Sao_Paulo BET
66Link Asia/Dhaka BST
67Link Africa/Maputo CAT
68Link America/St_Johns CNT
69Link America/Chicago CST
70Link Asia/Shanghai CTT
71Link Africa/Addis_Ababa EAT
72Link Europe/Paris ECT
73#Link Europe/Istanbul EET # EET is a standard UNIX zone
74####Link EST America/New_York EST # Defined as -05:00
75####Link Pacific/Honolulu HST # Defined as -10:00
76Link America/Indiana/Indianapolis IET
77Link Asia/Kolkata IST
78Link Asia/Tokyo JST
79#Link Asia/Tehran MET # MET is a standard UNIX zone
80Link Pacific/Apia MIT
81####Link America/Denver MST # Defined as -07:00
82Link Asia/Yerevan NET
83Link Pacific/Auckland NST
84Link Asia/Karachi PLT
85Link America/Phoenix PNT
86Link America/Puerto_Rico PRT
87Link America/Los_Angeles PST
88Link Pacific/Guadalcanal SST
89#Link Etc/UTC UTC # Olson LINK
90Link Asia/Ho_Chi_Minh VST
91
92#
93# Aliases already dropped from the TZ database.
94# ICU may also remove these aliases.
95#
96Link America/Regina Canada/East-Saskatchewan # removed from backward in 2017c
97