timezone/etcetera

   1 # <pre>
   2 # @(#)etcetera  8.2
   3 # This file is in the public domain, so clarified as of
   4 # 2009-05-17 by Arthur David Olson.
   5
   6 # These entries are mostly present for historical reasons, so that
   7 # people in areas not otherwise covered by the tz files could "zic -l"
   8 # to a time zone that was right for their area.  These days, the
   9 # tz files cover almost all the inhabited world, and the only practical
  10 # need now for the entries that are not on UTC are for ships at sea
  11 # that cannot use POSIX TZ settings.
  12
  13 Zone    Etc/GMT         0       -       GMT
  14 Zone    Etc/UTC         0       -       UTC
  15 Zone    Etc/UCT         0       -       UCT
  16
  17 # The following link uses older naming conventions,
  18 # but it belongs here, not in the file `backward',
  19 # as functions like gmtime load the "GMT" file to handle leap seconds properly.
  20 # We want this to work even on installations that omit the other older names.
  21 Link    Etc/GMT                         GMT
  22
  23 Link    Etc/UTC                         Etc/Universal
  24 Link    Etc/UTC                         Etc/Zulu
  25
  26 Link    Etc/GMT                         Etc/Greenwich
  27 Link    Etc/GMT                         Etc/GMT-0
  28 Link    Etc/GMT                         Etc/GMT+0
  29 Link    Etc/GMT                         Etc/GMT0
  30
  31 # We use POSIX-style signs in the Zone names and the output abbreviations,
  32 # even though this is the opposite of what many people expect.
  33 # POSIX has positive signs west of Greenwich, but many people expect
  34 # positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
  35 # the abbreviation "GMT+4" and corresponds to 4 hours behind UTC
  36 # (i.e. west of Greenwich) even though many people would expect it to
  37 # mean 4 hours ahead of UTC (i.e. east of Greenwich).
  38 #
  39 # In the draft 5 of POSIX 1003.1-200x, the angle bracket notation
  40 # (which is not yet supported by the tz code) allows for
  41 # TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
  42 # ISO 8601 you can use TZ='<-0400>+4'.  Thus the commonly-expected
  43 # offset is kept within the angle bracket (and is used for display)
  44 # while the POSIX sign is kept outside the angle bracket (and is used
  45 # for calculation).
  46 #
  47 # Do not use a TZ setting like TZ='GMT+4', which is four hours behind
  48 # GMT but uses the completely misleading abbreviation "GMT".
  49
  50 # Earlier incarnations of this package were not POSIX-compliant,
  51 # and had lines such as
  52 #               Zone    GMT-12          -12     -       GMT-1200
  53 # We did not want things to change quietly if someone accustomed to the old
  54 # way does a
  55 #               zic -l GMT-12
  56 # so we moved the names into the Etc subdirectory.
  57
  58 Zone    Etc/GMT-14      14      -       GMT-14  # 14 hours ahead of GMT
  59 Zone    Etc/GMT-13      13      -       GMT-13
  60 Zone    Etc/GMT-12      12      -       GMT-12
  61 Zone    Etc/GMT-11      11      -       GMT-11
  62 Zone    Etc/GMT-10      10      -       GMT-10
  63 Zone    Etc/GMT-9       9       -       GMT-9
  64 Zone    Etc/GMT-8       8       -       GMT-8
  65 Zone    Etc/GMT-7       7       -       GMT-7
  66 Zone    Etc/GMT-6       6       -       GMT-6
  67 Zone    Etc/GMT-5       5       -       GMT-5
  68 Zone    Etc/GMT-4       4       -       GMT-4
  69 Zone    Etc/GMT-3       3       -       GMT-3
  70 Zone    Etc/GMT-2       2       -       GMT-2
  71 Zone    Etc/GMT-1       1       -       GMT-1
  72 Zone    Etc/GMT+1       -1      -       GMT+1
  73 Zone    Etc/GMT+2       -2      -       GMT+2
  74 Zone    Etc/GMT+3       -3      -       GMT+3
  75 Zone    Etc/GMT+4       -4      -       GMT+4
  76 Zone    Etc/GMT+5       -5      -       GMT+5
  77 Zone    Etc/GMT+6       -6      -       GMT+6
  78 Zone    Etc/GMT+7       -7      -       GMT+7
  79 Zone    Etc/GMT+8       -8      -       GMT+8
  80 Zone    Etc/GMT+9       -9      -       GMT+9
  81 Zone    Etc/GMT+10      -10     -       GMT+10
  82 Zone    Etc/GMT+11      -11     -       GMT+11
  83 Zone    Etc/GMT+12      -12     -       GMT+12