xref: /freebsd/contrib/tzdata/etcetera (revision bc96366c864c07ef352edb92017357917c75b36c)
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
11Zone	Etc/GMT		0	-	GMT
12Zone	Etc/UTC		0	-	UTC
13Zone	Etc/UCT		0	-	UCT
14
15# The following link uses older naming conventions,
16# but it belongs here, not in the file 'backward',
17# as functions like gmtime load the "UTC" file to handle leap seconds properly.
18# We want this to work even on installations that omit the other older names.
19Link	Etc/UTC				UTC
20
21Link	Etc/UTC				Etc/Universal
22Link	Etc/UTC				Etc/Zulu
23
24Link	Etc/GMT				Etc/Greenwich
25Link	Etc/GMT				Etc/GMT-0
26Link	Etc/GMT				Etc/GMT+0
27Link	Etc/GMT				Etc/GMT0
28
29# We use POSIX-style signs in the Zone names and the output abbreviations,
30# even though this is the opposite of what many people expect.
31# POSIX has positive signs west of Greenwich, but many people expect
32# positive signs east of Greenwich.  For example, TZ='Etc/GMT+4' uses
33# the abbreviation "GMT+4" and corresponds to 4 hours behind UT
34# (i.e. west of Greenwich) even though many people would expect it to
35# mean 4 hours ahead of UT (i.e. east of Greenwich).
36#
37# In the draft 5 of POSIX 1003.1-200x, the angle bracket notation allows for
38# TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
39# ISO 8601 you can use TZ='<-0400>+4'.  Thus the commonly-expected
40# offset is kept within the angle bracket (and is used for display)
41# while the POSIX sign is kept outside the angle bracket (and is used
42# for calculation).
43#
44# Do not use a TZ setting like TZ='GMT+4', which is four hours behind
45# GMT but uses the completely misleading abbreviation "GMT".
46
47# Earlier incarnations of this package were not POSIX-compliant,
48# and had lines such as
49#		Zone	GMT-12		-12	-	GMT-1200
50# We did not want things to change quietly if someone accustomed to the old
51# way does a
52#		zic -l GMT-12
53# so we moved the names into the Etc subdirectory.
54
55Zone	Etc/GMT-14	14	-	GMT-14	# 14 hours ahead of GMT
56Zone	Etc/GMT-13	13	-	GMT-13
57Zone	Etc/GMT-12	12	-	GMT-12
58Zone	Etc/GMT-11	11	-	GMT-11
59Zone	Etc/GMT-10	10	-	GMT-10
60Zone	Etc/GMT-9	9	-	GMT-9
61Zone	Etc/GMT-8	8	-	GMT-8
62Zone	Etc/GMT-7	7	-	GMT-7
63Zone	Etc/GMT-6	6	-	GMT-6
64Zone	Etc/GMT-5	5	-	GMT-5
65Zone	Etc/GMT-4	4	-	GMT-4
66Zone	Etc/GMT-3	3	-	GMT-3
67Zone	Etc/GMT-2	2	-	GMT-2
68Zone	Etc/GMT-1	1	-	GMT-1
69Zone	Etc/GMT+1	-1	-	GMT+1
70Zone	Etc/GMT+2	-2	-	GMT+2
71Zone	Etc/GMT+3	-3	-	GMT+3
72Zone	Etc/GMT+4	-4	-	GMT+4
73Zone	Etc/GMT+5	-5	-	GMT+5
74Zone	Etc/GMT+6	-6	-	GMT+6
75Zone	Etc/GMT+7	-7	-	GMT+7
76Zone	Etc/GMT+8	-8	-	GMT+8
77Zone	Etc/GMT+9	-9	-	GMT+9
78Zone	Etc/GMT+10	-10	-	GMT+10
79Zone	Etc/GMT+11	-11	-	GMT+11
80Zone	Etc/GMT+12	-12	-	GMT+12
81