NAME

cal —

displays a calendar

SYNOPSIS

cal [-jmwy] [month] [year]

DESCRIPTION

cal displays a simple calendar. Calendars may be displayed by month or by year.

The options are as follows:

-j: Display Julian dates (days one-based, numbered from January 1). The options -j and -w are mutually exclusive.
-m: Display weeks starting on Monday instead of Sunday.
-w: Display week numbers in the month display. If -m is specified the ISO week format is assumed. The options -j and -w are mutually exclusive.
-y: Display a calendar for the current year.

A single numerical parameter specifies the year (1 - 9999) to be displayed. The year must be fully specified: “cal 89” will not display a calendar for 1989. Two parameters denote the month (1 - 12, or a month name or abbreviation thereof) and year. Alternatively, a single parameter may be given specifying the name or abbreviated name of a month: in that case a calendar is displayed for that month of the current year. If no parameters are specified, the current month's calendar is displayed.

A year starts on January 1st.

The Gregorian Reformation is assumed to have occurred in 1752 after the 2nd of September. By this time, most countries had recognized the reformation (although a few did not recognize it until the early 1900's). Eleven days following that date were eliminated by the reformation, so the calendar for that month is a bit unusual.

EXIT STATUS

The cal utility exits 0 on success, and >0 if an error occurs.

STANDARDS

The cal utility is compliant with the X/Open Portability Guide Issue 4 (“XPG4”) specification.

The flags [-jmwy] are extensions to that specification.

The week number computed by -mw is compliant with the ISO 8601 specification.

HISTORY