CAL(1) System Reference Manual CAL(1)

cal - displays a calendar

cal [-mjy] [month [year]]

Cal displays a simple calendar. If arguments are not specified, the cur-
rent month is displayed. The options are as follows:

-m Display Monday as the first day of the week. (The default is

-j Display Julian dates (days one-based, numbered from January 1).

-y Display a calendar for the current year.

A single parameter specifies the year (1 - 9999) to be displayed; note
the year must be fully specified: ``cal 89'' will not display a calendar
for 1989. Two parameters denote the month (1 - 12) and year. If no pa-
rameters are specified, the current month's calendar is displayed.

A year starts on Jan 1.

The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
of September. By this time, most countries had recognized the reforma-
tion (although a few did not recognize it until the early 1900's.) Ten
days following that date were eliminated by the reformation, so the cal-
endar for that month is a bit unusual.

A cal command appeared in Version 6 AT&T UNIX.

BSD Experimental June 6, 1993 1