.\" Copyright (c) 1989 The Regents of the University of California.
.\" This code is derived from software contributed to Berkeley by
.\" Redistribution and use in source and binary forms are permitted
.\" provided that the above copyright notice and this paragraph are
.\" duplicated in all such forms and that any documentation,
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.\" distribution and use acknowledge that the software was developed
.\" by the University of California, Berkeley. The name of the
.\" University may not be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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.\" @(#)cal.1 6.5 (Berkeley) %G%
cal \- displays a calendar
displays a calendar for a specified month and/or year.
The options are as follows:
Display julian dates (days one-based, numbered from January 1).
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
display a calendar for 1989.
Two parameters denote the month (1 - 12) and year.
If no parameters are specified, the current month's calendar is
The Gregorian Reformation is assumed to have occurred on 3 September
By this time, most countries had recognized the reformation (although
a few did not recognize it until the early 1900's.)
From 3 September 1752 through 13 September 1752 was eliminated by
the reformation, so the calendar for that month is a bit unusual.