date - date and time

       Print the date, in the format

            TueAug1617:03:52CDT1977

       The options are

       -u     Report Greenwich Mean Time (GMT) rather than local time.

       -n     Report the date as the number of seconds since the epoch, 00:00:00 GMT, January 1, 1970.

       The  conversion from Greenwich Mean Time to local time depends on the $timezone environment variable; see
       ctime(3).

       If the optional argument seconds is present, it is used as the time to convert rather than the real time.

       date - date and time

/src/cmd/date.cDATE(1plan9)

date [ option ] [ seconds ]