Unix in a Nutshell, 4th Edition

Time Zones

CVS understands time zones expressed in offsets from UTC, such as +0700 (7 hours ahead) and -1130 (11 hours, 30 minutes behind). The format for these time zones is +HHMM or -HHMM, where + means ahead of UTC and - means behind UTC. CVS also understands time-zone abbreviations and ignores case and punctuation when interpreting them.

Tip

Some of the time-zone abbreviations CVS recognizes are ambiguous. CVS recognizes only one meaning for each of the ambiguous time zones. However, which meaning is recognized may vary depending on your operating system, and on how CVS was configured when it was compiled.

Table 14-2 shows the valid civilian time-zone abbreviations for CVS. Table 14-3 shows military time-zone abbreviations that CVS recognizes.

Table 14-2. Civilian time-zone abbreviations

Abbrev.	Offset/name
gmt	+0000 Greenwich Mean	met	−0100 Middle European
ut	+0000 Coordinated Universal Time	mewt	−0100 Middle European Winter
utc	+0000 Coordinated Universal Time	mest	Middle European Summer
wet	+0000 Western European	swt	−0100 Swedish Winter
bst	+0000 British Summer (ambiguous with Brazil Standard)	sst	Swedish Summer (ambiguous with South Sumatra)
wat	+0100 West Africa	fwt	−0100 French Winter
at	+0200 Azores	fst	French Summer
bst	+0300 Brazil Standard (ambiguous with British Summer)	eet	−0200 Eastern Europe, USSR Zone 1
gst	+0300 Greenland Standard (ambiguous with Guam Standard)	bt	−0300 Baghdad, USSR Zone 2
nft	+0330 Newfoundland	it