1.\" Copyright (c) 1989, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Kim Letkeman. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" from: @(#)cal.1 6.10 (Berkeley) 6/17/91 36.\" $Id: cal.1,v 1.4 1994/11/03 15:37:59 jtc Exp $ 37.\" 38.Dd June 17, 1991 39.Dt CAL 1 40.Os 41.Sh NAME 42.Nm cal 43.Nd displays a calendar 44.Sh SYNOPSIS 45.Nm cal 46.Op Fl jy 47.Oo 48.Op Cm Ar month 49.Ar year 50.Oc 51.Sh DESCRIPTION 52.Nm Cal 53displays a simple calendar. 54If arguments are not specified, 55the current month is displayed. 56The options are as follows: 57.Bl -tag -width Ds 58.It Fl j 59Display julian dates (days one-based, numbered from January 1). 60.It Fl y 61Display a calendar for the current year. 62.El 63.Pp 64A single parameter specifies the year (1 - 9999) to be displayed; 65note the year must be fully specified: 66.Dq Li cal 89 67will 68.Em not 69display a calendar for 1989. 70Two parameters denote the month (1 - 12) and year. 71If no parameters are specified, the current month's calendar is 72displayed. 73.Pp 74A year starts on Jan 1. 75.Pp 76The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd 77of September. 78By this time, most countries had recognized the reformation (although a 79few did not recognize it until the early 1900's.) 80Ten days following that date were eliminated by the reformation, so the 81calendar for that month is a bit unusual. 82.Sh HISTORY 83A 84.Nm 85command appeared in 86.At v6 . 87