Fujitsu SPARC Enterprise M4000 Reference Manual page 259

-p offset Specifies the offset of Daylight Saving Time and Greenwich
mean time (GMT). You can specify offset in the following format.
In case omitted, it is 1 hour before the specified time.
GMT{+|–}hh[:mm[:ss]]
GMT
{+|–}
hh[:mm[:ss]]
-s timezone Specifies the time zone. One of the time zone displayed by the
-a option can be specified for timezone.
System Administration
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.
settimezone(8)
289