Fujitsu SPARC ENTERPRISE M3000 Xscf Reference Manual page 329

-o offset Specifies the offset of time zone and Greenwich mean time
(GMT). Specify this option in combination with "-c adddst" or
"-c deldst." You can specify offset in the following format.
GMT{+|–}hh[:mm[:ss]]
GMT
{+|–}
hh[:mm[:ss]]
Greenwich mean time
Specifies "–" to set the standard time to the
time which is ahead of GMT. (To adjust to the
local time east to Greenwich, the offset is a
negative value.) Specifies "+" to set the
standard time to the time which is behind the
GMT. (To adjust to the local tome west to
Greenwich, the offset is a positive value.)
Specifies the offset time. hh is 00–23, mm is
00–59, ss is 00–59.
System Administration
settimezone(8)
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