xref: /freebsd/contrib/tzdata/etcetera (revision ca987d4641cdcd7f27e153db17c5bf064934faf5)
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# These entries are mostly present for historical reasons, so that
5# people in areas not otherwise covered by the tz files could "zic -l"
6# to a time zone that was right for their area.  These days, the
7# tz files cover almost all the inhabited world, and the only practical
8# need now for the entries that are not on UTC are for ships at sea
9# that cannot use POSIX TZ settings.
10
11# Starting with POSIX 1003.1-2001, the entries below are all
12# unnecessary as settings for the TZ environment variable.  E.g.,
13# instead of TZ='Etc/GMT+4' one can use the POSIX setting TZ='<-04>+4'.
14#
15# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours
16# behind GMT but uses the completely misleading abbreviation "GMT".
17
18Zone	Etc/GMT		0	-	GMT
19Zone	Etc/UTC		0	-	UTC
20Zone	Etc/UCT		0	-	UCT
21
22# The following link uses older naming conventions,
23# but it belongs here, not in the file 'backward',
24# as functions like gmtime load the "UTC" file to handle leap seconds properly.
25# We want this to work even on installations that omit the other older names.
26Link	Etc/UTC				UTC
27
28Link	Etc/UTC				Etc/Universal
29Link	Etc/UTC				Etc/Zulu
30
31Link	Etc/GMT				Etc/Greenwich
32Link	Etc/GMT				Etc/GMT-0
33Link	Etc/GMT				Etc/GMT+0
34Link	Etc/GMT				Etc/GMT0
35
36# Be consistent with POSIX TZ settings in the Zone names,
37# even though this is the opposite of what many people expect.
38# POSIX has positive signs west of Greenwich, but many people expect
39# positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
40# the abbreviation "-04" and corresponds to 4 hours behind UT
41# (i.e. west of Greenwich) even though many people would expect it to
42# mean 4 hours ahead of UT (i.e. east of Greenwich).
43
44# Earlier incarnations of this package were not POSIX-compliant,
45# and had lines such as
46#		Zone	GMT-12		-12	-	GMT-1200
47# We did not want things to change quietly if someone accustomed to the old
48# way does a
49#		zic -l GMT-12
50# so we moved the names into the Etc subdirectory.
51# Also, the time zone abbreviations are now compatible with %z.
52
53Zone	Etc/GMT-14	14	-	+14
54Zone	Etc/GMT-13	13	-	+13
55Zone	Etc/GMT-12	12	-	+12
56Zone	Etc/GMT-11	11	-	+11
57Zone	Etc/GMT-10	10	-	+10
58Zone	Etc/GMT-9	9	-	+09
59Zone	Etc/GMT-8	8	-	+08
60Zone	Etc/GMT-7	7	-	+07
61Zone	Etc/GMT-6	6	-	+06
62Zone	Etc/GMT-5	5	-	+05
63Zone	Etc/GMT-4	4	-	+04
64Zone	Etc/GMT-3	3	-	+03
65Zone	Etc/GMT-2	2	-	+02
66Zone	Etc/GMT-1	1	-	+01
67Zone	Etc/GMT+1	-1	-	-01
68Zone	Etc/GMT+2	-2	-	-02
69Zone	Etc/GMT+3	-3	-	-03
70Zone	Etc/GMT+4	-4	-	-04
71Zone	Etc/GMT+5	-5	-	-05
72Zone	Etc/GMT+6	-6	-	-06
73Zone	Etc/GMT+7	-7	-	-07
74Zone	Etc/GMT+8	-8	-	-08
75Zone	Etc/GMT+9	-9	-	-09
76Zone	Etc/GMT+10	-10	-	-10
77Zone	Etc/GMT+11	-11	-	-11
78Zone	Etc/GMT+12	-12	-	-12
79