icuSources/tools/tzcode/icuzones

   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
  17 Zone    Etc/Unknown     0       -       Unknown
  18
  19 # SystemV time zones.
  20 # The Olson systemv file has these commented out.
  21
  22 # Zone  NAME            GMTOFF  RULES/SAVE      FORMAT  [UNTIL]
  23 Zone    SystemV/AST4ADT -4:00   SystemV         A%sT
  24 Zone    SystemV/EST5EDT -5:00   SystemV         E%sT
  25 Zone    SystemV/CST6CDT -6:00   SystemV         C%sT
  26 Zone    SystemV/MST7MDT -7:00   SystemV         M%sT
  27 Zone    SystemV/PST8PDT -8:00   SystemV         P%sT
  28 Zone    SystemV/YST9YDT -9:00   SystemV         Y%sT
  29 Zone    SystemV/AST4    -4:00   -               AST
  30 Zone    SystemV/EST5    -5:00   -               EST
  31 Zone    SystemV/CST6    -6:00   -               CST
  32 Zone    SystemV/MST7    -7:00   -               MST
  33 Zone    SystemV/PST8    -8:00   -               PST
  34 Zone    SystemV/YST9    -9:00   -               YST
  35 Zone    SystemV/HST10   -10:00  -               HST
  36
  37
  38 # The list below is for supporting legacy ICU zone aliases.
  39 # These definitions were originally defined in tz.alias.
  40
  41 #### Aliases that conflict with Olson compatibility Zone definition
  42
  43 Link Australia/Darwin ACT
  44 Link Australia/Sydney AET
  45 Link America/Argentina/Buenos_Aires AGT
  46 Link Africa/Cairo ART
  47 Link America/Anchorage AST
  48 Link America/Sao_Paulo BET
  49 Link Asia/Dhaka BST
  50 Link Africa/Maputo CAT
  51 Link America/St_Johns CNT
  52 Link America/Chicago CST
  53 Link Asia/Shanghai CTT
  54 Link Africa/Addis_Ababa EAT
  55 Link Europe/Paris ECT
  56 #Link Europe/Istanbul EET # EET is a standard UNIX zone
  57 ####Link EST America/New_York EST # Defined as -05:00
  58 ####Link Pacific/Honolulu HST # Defined as -10:00
  59 Link America/Indiana/Indianapolis IET
  60 Link Asia/Kolkata IST
  61 Link Asia/Tokyo JST
  62 #Link Asia/Tehran MET # MET is a standard UNIX zone
  63 Link Pacific/Apia MIT
  64 ####Link America/Denver MST # Defined as -07:00
  65 Link Asia/Yerevan NET
  66 Link Pacific/Auckland NST
  67 Link Asia/Karachi PLT
  68 Link America/Phoenix PNT
  69 Link America/Puerto_Rico PRT
  70 Link America/Los_Angeles PST
  71 Link Pacific/Guadalcanal SST
  72 #Link Etc/UTC UTC # Olson LINK
  73 Link Asia/Ho_Chi_Minh VST
  74
  75 #
  76 # Aliases already dropped from the TZ database.
  77 # ICU may also remove these aliases.
  78 #
  79 Link America/Regina Canada/East-Saskatchewan # removed from backward in 2017c
  80
  81
  82 # Note:
  83 #   Following section was added for tz database 2018a and 2018b.
  84 # ICU has a bug handling negative DST, and we also don't want to
  85 # flip sumer time name and winter time name for Dublin at least for
  86 # now. Because the change had major impacts to tz database external
  87 # consumers, the tz database maintainer once reverted the Europe/Dublin
  88 # rules (same as 2017c or older) in 2018c. The tz database maintainer
  89 # thinks the changes in 2018a should be brought back when external
  90 # tz database consumers are ready to adopt the change. We don't know
  91 # what CLDR TC want to do with this for now. But if tz database brings
  92 # back the change, and CLDR TC (and ICU TC) want to keep the display name
  93 # unchanged, then we can uncomment the block below to restore ICU
  94 # custom override. (Yoshito 2018-01-23)
  95
  96 #
  97 # tzdata2018a changed Europe/Dublin to use IST (UTC+1) as the standard time
  98 # of the region, and GMT (UTC) as the daylight saving time with negative
  99 # offset (-1 hour) in winter. ICU SimpleTimeZone rejects a zone with negative
 100 # daylight saving time offset. We could remove the restriction in newer version
 101 # of ICU, but such data does not work well with older ICU runtime without
 102 # fixing the issue. For now, we define our own Europe/Dubin in ICU, replacing
 103 # Europe/Dublin data from the tz database.
 104 #
 105
 106 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 107 # Rule  Eire--ICU       1971    only    -       Oct     31       2:00u  0       GMT
 108 # Rule  Eire--ICU       1972    1980    -       Mar     Sun>=16  2:00u  1:00    IST
 109 # Rule  Eire--ICU       1972    1980    -       Oct     Sun>=23  2:00u  0       GMT
 110 # Rule  Eire--ICU       1981    max     -       Mar     lastSun  1:00u  1:00    IST
 111 # Rule  Eire--ICU       1981    1989    -       Oct     Sun>=23  1:00u  0       GMT
 112 # Rule  Eire--ICU       1990    1995    -       Oct     Sun>=22  1:00u  0       GMT
 113 # Rule  Eire--ICU       1996    max     -       Oct     lastSun  1:00u  0       GMT
 114
 115 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 116 # Zone  Europe/Dublin--ICU      -0:25:00 -      LMT     1880 Aug  2
 117 #                       -0:25:21 -      DMT     1916 May 21  2:00s
 118 #                       -0:25:21 1:00   IST     1916 Oct  1  2:00s
 119 #                        0:00   GB-Eire %s      1921 Dec  6 # independence
 120 #                        0:00   GB-Eire GMT/IST 1940 Feb 25  2:00s
 121 #                        0:00   1:00    IST     1946 Oct  6  2:00s
 122 #                        0:00   -       GMT     1947 Mar 16  2:00s
 123 #                        0:00   1:00    IST     1947 Nov  2  2:00s
 124 #                        0:00   -       GMT     1948 Apr 18  2:00s
 125 #                        0:00   GB-Eire GMT/IST 1968 Oct 27
 126 #                        0:00   Eire--ICU       GMT/IST
 127
 128 # Link Europe/Dublin--ICU Eire--ICU
 129