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CAL(1)                    BSD General Commands Manual                   CAL(1)

     cal - displays a calendar

     cal [-smjy13] [[[day] month] year]

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

     -1      Display single month output.  (This is the default.)

     -3      Display prev/current/next month output.

     -s      Display Sunday as the first day of the week.

     -m      Display Monday as the first day of the week.

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

     -y      Display a calendar for the current year.

     -V      Display version information and exit.

     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.  Three parameters
     denote the day (1-31), month and year, and the day will be highlighted if the calendar is displayed on a termi-
     nal.  If no parameters are specified, the current month's calendar is displayed.

     A year starts on Jan 1. The first day of the week is determined by the locale.

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

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

     Several much more elaborate versions of this program exist, with support for colors, holidays, birthdays,
     reminders and appointments, etc. For example, try the cal from or
     GNU gcal.

     The cal command is part of the util-linux-ng package and is available from ftp://ftp.ker-

BSD                              June 6, 1993                              BSD