.TH DATE 1
.SH NAME
date, clock \- date and time
.SH SYNOPSIS
.B date
[
.I -unitm
] [
.B -f
.I format
] [
.I seconds
]
.br
.B clock
.SH DESCRIPTION
Print the date, in the format
.PP
.B
	Tue Aug 16 17:03:52 CDT 1977
.PP
Or the format specified by the format option.

The options are
.TP
.B -u
Report Greenwich Mean Time (GMT) rather than local time.
.TP
.B -n
Report the date as the number of seconds since the
epoch, 00:00:00 GMT, January 1, 1970.
.TP
.B -i
Report the date as ISO-8601 without time and timezone suffix.
.TP
.B -t
Report the date as ISO-8601 with time and timezone suffix.
.TP
.B -f
Print using the format specified by the
.I format
string rather than the default. Format strings are in the format used by
.IR tmdate (2)

.PP
The conversion from Greenwich Mean Time to local time depends on the
.B $timezone
environment variable; see
.IR ctime (2).
.PP
If the optional argument
.I seconds
is present, it is used as the time to convert rather than
the real time.
.PP
.I Clock
draws a simple analog clock in its window.
.SH FILES
.TF /adm/timezone/local
.TP
.B /env/timezone
Current timezone name and adjustments.
.TP
.B /adm/timezone
A directory containing timezone tables.
.TP
.B /adm/timezone/local
Default timezone file, copied by
.IR init (8)
into
.BR /env/timezone .
.PD
.SH SOURCE
.B /sys/src/cmd/date.c
.br
.B /sys/src/cmd/clock.c
.SH "SEE ALSO"
.IR tmdate (2)