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  23 #
  24 # <pre>
  25 # This file is in the public domain, so clarified as of
  26 # 2009-05-17 by Arthur David Olson.
  27 
  28 # These entries are mostly present for historical reasons, so that
  29 # people in areas not otherwise covered by the tz files could "zic -l"
  30 # to a time zone that was right for their area.  These days, the
  31 # tz files cover almost all the inhabited world, and the only practical
  32 # need now for the entries that are not on UTC are for ships at sea
  33 # that cannot use POSIX TZ settings.
  34 
  35 Zone    Etc/GMT         0       -       GMT
  36 Zone    Etc/UTC         0       -       UTC
  37 Zone    Etc/UCT         0       -       UCT
  38 
  39 # The following link uses older naming conventions,
  40 # but it belongs here, not in the file `backward',
  41 # as functions like gmtime load the "GMT" file to handle leap seconds properly.
  42 # We want this to work even on installations that omit the other older names.
  43 Link    Etc/GMT                         GMT
  44 
  45 Link    Etc/UTC                         Etc/Universal
  46 Link    Etc/UTC                         Etc/Zulu
  47 
  48 Link    Etc/GMT                         Etc/Greenwich
  49 Link    Etc/GMT                         Etc/GMT-0
  50 Link    Etc/GMT                         Etc/GMT+0
  51 Link    Etc/GMT                         Etc/GMT0
  52 
  53 # We use POSIX-style signs in the Zone names and the output abbreviations,
  54 # even though this is the opposite of what many people expect.
  55 # POSIX has positive signs west of Greenwich, but many people expect
  56 # positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
  57 # the abbreviation "GMT+4" and corresponds to 4 hours behind UTC
  58 # (i.e. west of Greenwich) even though many people would expect it to
  59 # mean 4 hours ahead of UTC (i.e. east of Greenwich).
  60 #
  61 # In the draft 5 of POSIX 1003.1-200x, the angle bracket notation allows for
  62 # TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
  63 # ISO 8601 you can use TZ='<-0400>+4'.  Thus the commonly-expected
  64 # offset is kept within the angle bracket (and is used for display)
  65 # while the POSIX sign is kept outside the angle bracket (and is used
  66 # for calculation).
  67 #
  68 # Do not use a TZ setting like TZ='GMT+4', which is four hours behind
  69 # GMT but uses the completely misleading abbreviation "GMT".
  70 
  71 # Earlier incarnations of this package were not POSIX-compliant,
  72 # and had lines such as
  73 #               Zone    GMT-12          -12     -       GMT-1200
  74 # We did not want things to change quietly if someone accustomed to the old
  75 # way does a
  76 #               zic -l GMT-12
  77 # so we moved the names into the Etc subdirectory.
  78 
  79 Zone    Etc/GMT-14      14      -       GMT-14  # 14 hours ahead of GMT
  80 Zone    Etc/GMT-13      13      -       GMT-13
  81 Zone    Etc/GMT-12      12      -       GMT-12
  82 Zone    Etc/GMT-11      11      -       GMT-11
  83 Zone    Etc/GMT-10      10      -       GMT-10
  84 Zone    Etc/GMT-9       9       -       GMT-9
  85 Zone    Etc/GMT-8       8       -       GMT-8
  86 Zone    Etc/GMT-7       7       -       GMT-7
  87 Zone    Etc/GMT-6       6       -       GMT-6
  88 Zone    Etc/GMT-5       5       -       GMT-5
  89 Zone    Etc/GMT-4       4       -       GMT-4
  90 Zone    Etc/GMT-3       3       -       GMT-3
  91 Zone    Etc/GMT-2       2       -       GMT-2
  92 Zone    Etc/GMT-1       1       -       GMT-1
  93 Zone    Etc/GMT+1       -1      -       GMT+1
  94 Zone    Etc/GMT+2       -2      -       GMT+2
  95 Zone    Etc/GMT+3       -3      -       GMT+3
  96 Zone    Etc/GMT+4       -4      -       GMT+4
  97 Zone    Etc/GMT+5       -5      -       GMT+5
  98 Zone    Etc/GMT+6       -6      -       GMT+6
  99 Zone    Etc/GMT+7       -7      -       GMT+7
 100 Zone    Etc/GMT+8       -8      -       GMT+8
 101 Zone    Etc/GMT+9       -9      -       GMT+9
 102 Zone    Etc/GMT+10      -10     -       GMT+10
 103 Zone    Etc/GMT+11      -11     -       GMT+11
 104 Zone    Etc/GMT+12      -12     -       GMT+12