1 # tzdb data for ships at sea and other miscellany
   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 timezone 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 # Starting with POSIX 1003.1-2001, the entries below are all
  14 # unnecessary as settings for the TZ environment variable.  E.g.,
  15 # instead of TZ='Etc/GMT+4' one can use the POSIX setting TZ='<-04>+4'.
  16 #
  17 # Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours
  18 # behind GMT but uses the completely misleading abbreviation "GMT".
  19 
  20 Zone    Etc/GMT         0       -       GMT
  21 Zone    Etc/UTC         0       -       UTC
  22 Zone    Etc/UCT         0       -       UCT
  23 
  24 # The following link uses older naming conventions,
  25 # but it belongs here, not in the file 'backward',
  26 # as functions like gmtime load the "GMT" file to handle leap seconds properly.
  27 # We want this to work even on installations that omit the other older names.
  28 Link    Etc/GMT                         GMT
  29 
  30 Link    Etc/UTC                         Etc/Universal
  31 Link    Etc/UTC                         Etc/Zulu
  32 
  33 Link    Etc/GMT                         Etc/Greenwich
  34 Link    Etc/GMT                         Etc/GMT-0
  35 Link    Etc/GMT                         Etc/GMT+0
  36 Link    Etc/GMT                         Etc/GMT0
  37 
  38 # Be consistent with POSIX TZ settings in the Zone names,
  39 # even though this is the opposite of what many people expect.
  40 # POSIX has positive signs west of Greenwich, but many people expect
  41 # positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
  42 # the abbreviation "-04" and corresponds to 4 hours behind UT
  43 # (i.e. west of Greenwich) even though many people would expect it to
  44 # mean 4 hours ahead of UT (i.e. east of Greenwich).
  45 
  46 # Earlier incarnations of this package were not POSIX-compliant,
  47 # and had lines such as
  48 #               Zone    GMT-12          -12     -       GMT-1200
  49 # We did not want things to change quietly if someone accustomed to the old
  50 # way does a
  51 #               zic -l GMT-12
  52 # so we moved the names into the Etc subdirectory.
  53 # Also, the time zone abbreviations are now compatible with %z.
  54 
  55 Zone    Etc/GMT-14      14      -       +14
  56 Zone    Etc/GMT-13      13      -       +13
  57 Zone    Etc/GMT-12      12      -       +12
  58 Zone    Etc/GMT-11      11      -       +11
  59 Zone    Etc/GMT-10      10      -       +10
  60 Zone    Etc/GMT-9       9       -       +09
  61 Zone    Etc/GMT-8       8       -       +08
  62 Zone    Etc/GMT-7       7       -       +07
  63 Zone    Etc/GMT-6       6       -       +06
  64 Zone    Etc/GMT-5       5       -       +05
  65 Zone    Etc/GMT-4       4       -       +04
  66 Zone    Etc/GMT-3       3       -       +03
  67 Zone    Etc/GMT-2       2       -       +02
  68 Zone    Etc/GMT-1       1       -       +01
  69 Zone    Etc/GMT+1       -1      -       -01
  70 Zone    Etc/GMT+2       -2      -       -02
  71 Zone    Etc/GMT+3       -3      -       -03
  72 Zone    Etc/GMT+4       -4      -       -04
  73 Zone    Etc/GMT+5       -5      -       -05
  74 Zone    Etc/GMT+6       -6      -       -06
  75 Zone    Etc/GMT+7       -7      -       -07
  76 Zone    Etc/GMT+8       -8      -       -08
  77 Zone    Etc/GMT+9       -9      -       -09
  78 Zone    Etc/GMT+10      -10     -       -10
  79 Zone    Etc/GMT+11      -11     -       -11
  80 Zone    Etc/GMT+12      -12     -       -12