1.\" $OpenBSD: cal.1,v 1.24 2010/09/03 11:09:28 jmc Exp $ 2.\" $NetBSD: cal.1,v 1.6 1995/09/02 05:34:20 jtc Exp $ 3.\" 4.\" Copyright (c) 1989, 1990, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" This code is derived from software contributed to Berkeley by 8.\" Kim Letkeman. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)cal.1 8.2 (Berkeley) 4/28/95 35.\" 36.Dd $Mdocdate: September 3 2010 $ 37.Dt CAL 1 38.Os 39.Sh NAME 40.Nm cal 41.Nd displays a calendar 42.Sh SYNOPSIS 43.Nm cal 44.Op Fl jmwy 45.Op Ar month 46.Op Ar year 47.Sh DESCRIPTION 48.Nm 49displays a simple calendar. 50Calendars may be displayed by month or by year. 51.Pp 52The options are as follows: 53.Bl -tag -width Ds 54.It Fl j 55Display Julian dates (days one-based, numbered from January 1). 56The options 57.Fl j 58and 59.Fl w 60are mutually exclusive. 61.It Fl m 62Display weeks starting on Monday instead of Sunday. 63.It Fl w 64Display week numbers in the month display. 65If 66.Fl m 67is specified the ISO week format is assumed. 68The options 69.Fl j 70and 71.Fl w 72are mutually exclusive. 73.It Fl y 74Display a calendar for the current year. 75.El 76.Pp 77A single numerical parameter specifies the 78.Ar year 79(1 \- 9999) 80to be displayed. 81The year must be fully specified: 82.Dq Li cal 89 83will 84.Em not 85display a calendar for 1989. 86Two parameters denote the 87.Ar month 88(1 \- 12, or a month name or abbreviation thereof) 89and 90.Ar year . 91Alternatively, 92a single parameter may be given specifying 93the name or abbreviated name of a month: 94in that case a calendar is displayed for that month of the current year. 95If no parameters are specified, the current month's calendar is 96displayed. 97.Pp 98A year starts on January 1st. 99.Pp 100The Gregorian Reformation is assumed to have occurred in 1752 after the 2nd 101of September. 102By this time, most countries had recognized the reformation (although a 103few did not recognize it until the early 1900's). 104Eleven days following that date were eliminated by the reformation, so the 105calendar for that month is a bit unusual. 106.Sh EXIT STATUS 107.Ex -std cal 108.Sh SEE ALSO 109.Xr calendar 1 110.Sh STANDARDS 111The 112.Nm 113utility is compliant with the 114.St -xpg4 115specification. 116.Pp 117The flags 118.Op Fl jmwy 119are extensions to that specification. 120.Pp 121The week number computed by 122.Fl mw 123is compliant with the ISO 8601 specification. 124.Sh HISTORY 125A 126.Nm 127command appeared in 128.At v6 . 129