xref: /freebsd/contrib/tzdata/etcetera (revision 6829dae12bb055451fa467da4589c43bd03b1e64)
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
20Zone	Etc/GMT		0	-	GMT
21Zone	Etc/UTC		0	-	UTC
22Zone	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 "UTC" file to handle leap seconds properly.
27# We want this to work even on installations that omit the other older names.
28Link	Etc/UTC				UTC
29
30Link	Etc/UTC				Etc/Universal
31Link	Etc/UTC				Etc/Zulu
32
33Link	Etc/GMT				Etc/Greenwich
34Link	Etc/GMT				Etc/GMT-0
35Link	Etc/GMT				Etc/GMT+0
36Link	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
55Zone	Etc/GMT-14	14	-	+14
56Zone	Etc/GMT-13	13	-	+13
57Zone	Etc/GMT-12	12	-	+12
58Zone	Etc/GMT-11	11	-	+11
59Zone	Etc/GMT-10	10	-	+10
60Zone	Etc/GMT-9	9	-	+09
61Zone	Etc/GMT-8	8	-	+08
62Zone	Etc/GMT-7	7	-	+07
63Zone	Etc/GMT-6	6	-	+06
64Zone	Etc/GMT-5	5	-	+05
65Zone	Etc/GMT-4	4	-	+04
66Zone	Etc/GMT-3	3	-	+03
67Zone	Etc/GMT-2	2	-	+02
68Zone	Etc/GMT-1	1	-	+01
69Zone	Etc/GMT+1	-1	-	-01
70Zone	Etc/GMT+2	-2	-	-02
71Zone	Etc/GMT+3	-3	-	-03
72Zone	Etc/GMT+4	-4	-	-04
73Zone	Etc/GMT+5	-5	-	-05
74Zone	Etc/GMT+6	-6	-	-06
75Zone	Etc/GMT+7	-7	-	-07
76Zone	Etc/GMT+8	-8	-	-08
77Zone	Etc/GMT+9	-9	-	-09
78Zone	Etc/GMT+10	-10	-	-10
79Zone	Etc/GMT+11	-11	-	-11
80Zone	Etc/GMT+12	-12	-	-12
81