# 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.
# IANA tzdb file 'systemv' file has these SystemV/* zones commented out up to
2020a.
# 'systemv' file was removed in
2020b. We keep them in this supplemental zone data
# file for compatibility purpose.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule SystemV min
1973 - Apr lastSun
2:
00 1:
00 D
Rule SystemV min
1973 - Oct lastSun
2:
00 0 S
Rule SystemV
1974 only - Jan
6 2:
00 1:
00 D
Rule SystemV
1974 only - Nov lastSun
2:
00 0 S
Rule SystemV
1975 only - Feb
23 2:
00 1:
00 D
Rule SystemV
1975 only - Oct lastSun
2:
00 0 S
Rule SystemV
1976 max - Apr lastSun
2:
00 1:
00 D
Rule SystemV
1976 max - Oct lastSun
2:
00 0 S
# Note:
1901 Dec
13 20:
45:
52u is the minimum value of int32 seconds.
# A zone with infinite "min" year rule cannot be supported by
64 bit TZif,
# so adding explicit transition to zones with SystemV rule at the minimum
# int32 seconds.
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone SystemV/AST4ADT -
4:
00 - AST
1901 Dec
13 20:
45:
52u
-
4:
00 SystemV A%sT
Zone SystemV/EST5EDT -
5:
00 - EST
1901 Dec
13 20:
45:
52u
-
5:
00 SystemV E%sT
Zone SystemV/CST6CDT -
6:
00 - CST
1901 Dec
13 20:
45:
52u
-
6:
00 SystemV C%sT
Zone SystemV/MST7MDT -
7:
00 - MST
1901 Dec
13 20:
45:
52u
-
7:
00 SystemV M%sT
Zone SystemV/PST8PDT -
8:
00 - PST
1901 Dec
13 20:
45:
52u
-
8:
00 SystemV P%sT
Zone SystemV/YST9YDT -
9:
00 - YST
1901 Dec
13 20:
45:
52u
-
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
# pacificnew
# IANA tzdb file 'pacificnew' used to contain a Link for US/Pacific-New.
# 'pacificnew' file was removed in
2020b. We keep the Link here for compatibility.
Link America/Los_Angeles US/Pacific-New
# 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
