1.\" Copyright (c) 1989, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 4. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)calendar.1 8.1 (Berkeley) 6/29/93 29.\" $FreeBSD$ 30.\" 31.Dd June 13, 2002 32.Dt CALENDAR 1 33.Os 34.Sh NAME 35.Nm calendar 36.Nd reminder service 37.Sh SYNOPSIS 38.Nm 39.Op Fl A Ar num 40.Op Fl a 41.Op Fl B Ar num 42.Op Fl D Ar moon|sun 43.Op Fl d 44.Op Fl F Ar friday 45.Op Fl f Ar calendarfile 46.Op Fl l Ar longitude 47.Oo 48.Bk -words 49.Fl t Ar dd Ns 50.Sm off 51.Op . Ar mm Op . Ar year 52.Sm on 53.Ek 54.Oc 55.Op Fl U Ar UTC-offset 56.Op Fl W Ar num 57.Sh DESCRIPTION 58The 59.Nm 60utility checks the current directory for a file named 61.Pa calendar 62and displays lines that fall into the specified date range. 63On the day before a weekend (normally Friday), events for the next 64three days are displayed. 65.Pp 66The following options are available: 67.Bl -tag -width Ds 68.It Fl A Ar num 69Print lines from today and the next 70.Ar num 71days (forward, future). 72.It Fl a 73Process the ``calendar'' files of all users and mail the results 74to them. 75This requires super-user privileges. 76.It Fl B Ar num 77Print lines from today and the previous 78.Ar num 79days (backward, past). 80.It Fl D Ar moon|sun 81Print UTC offset, longitude and moon or sun information. 82.It Fl d 83Debug option: print current date information. 84.It Fl F Ar friday 85Specify which day of the week is ``Friday'' (the day before the 86weekend begins). 87Default is 5. 88.It Fl f Pa calendarfile 89Use 90.Pa calendarfile 91as the default calendar file. 92.It Fl l Ar longitude 93Perform lunar and solar calculations from this longitude. 94If neither longitude nor UTC offset is specified, the calculations will 95be based on the difference between UTC time and localtime. 96If both are specified, UTC offset overrides longitude. 97.It Xo Fl t 98.Sm off 99.Ar dd 100.Op . Ar mm Op . Ar year 101.Sm on 102.Xc 103For test purposes only: set date directly to argument values. 104.It Fl U Ar UTC-offset 105Perform lunar and solar calculations from this UTC offset. 106If neither UTC offset nor longitude is specified, the calculations 107will be based on the difference between UTC time and localtime. 108If both are specified, UTC offset overrides longitude. 109.It Fl W Ar num 110Print lines from today and the next 111.Ar num 112days (forward, future). 113Ignore weekends when calculating the number of days. 114.El 115.Sh FILE FORMAT 116To handle calendars in your national code table you can specify 117.Dq LANG=<locale_name> 118in the calendar file as early as possible. 119.Pp 120To handle the local name of sequences, you can specify them as: 121.Dq SEQUENCE=<first> <second> <third> <fourth> <fifth> <last> 122in the calendar file as early as possible. 123.Pp 124The names of the following special days are recognized: 125.Bl -tag -width 123456789012345 -compact 126.It Easter 127Catholic Easter. 128.It Paskha 129Orthodox Easter. 130.It NewMoon 131The lunar New Moon. 132.It FullMoon 133The lunar Full Moon. 134.It MarEquinox 135The solar equinox in March. 136.It JunSolstice 137The solar solstice in June. 138.It SepEquinox 139The solar equinox in September. 140.It DecSolstice 141The solar solstice in December. 142.It ChineseNewYear 143The first day of the Chinese year. 144.El 145These names may be reassigned to their local names via an assignment 146like 147.Dq Easter=Pasen 148in the calendar file. 149.Pp 150Other lines should begin with a month and day. 151They may be entered in almost any format, either numeric or as character 152strings. 153If the proper locale is set, national month and weekday 154names can be used. 155A single asterisk (``*'') matches every month. 156A day without a month matches that day of every week. 157A month without a day matches the first of that month. 158Two numbers default to the month followed by the day. 159Lines with leading tabs default to the last entered date, allowing 160multiple line specifications for a single date. 161.Pp 162The names of the recognized special days may be followed by a 163positive or negative integer, like: 164.Dq Easter+3 165or 166.Dq Paskha-4 . 167.Pp 168Weekdays may be followed by ``-4'' ...\& ``+5'' (aliases for 169last, first, second, third, fourth) for moving events like 170``the last Monday in April''. 171.Pp 172By convention, dates followed by an asterisk are not fixed, i.e., change 173from year to year. 174.Pp 175Day descriptions start after the first <tab> character in the line; 176if the line does not contain a <tab> character, it is not displayed. 177If the first character in the line is a <tab> character, it is treated as 178a continuation of the previous line. 179.Pp 180The ``calendar'' file is preprocessed by 181.Xr cpp 1 , 182allowing the inclusion of shared files such as lists of company holidays or 183meetings. 184If the shared file is not referenced by a full pathname, 185.Xr cpp 1 186searches in the current (or home) directory first, and then in the 187directory 188.Pa /usr/share/calendar . 189Empty lines and lines protected by the C commenting syntax 190.Pq Li /* ... */ 191are ignored. 192.Pp 193Some possible calendar entries (<tab> characters highlighted by 194\fB\et\fR sequence) 195.Bd -unfilled -offset indent 196LANG=C 197Easter=Ostern 198 199#include <calendar.usholiday> 200#include <calendar.birthday> 201 2026/15\fB\et\fRJune 15 (if ambiguous, will default to month/day). 203Jun. 15\fB\et\fRJune 15. 20415 June\fB\et\fRJune 15. 205Thursday\fB\et\fREvery Thursday. 206June\fB\et\fREvery June 1st. 20715 *\fB\et\fR15th of every month. 2082010/4/15\fB\et\fR15 April 2010 209 210May Sun+2\fB\et\fRsecond Sunday in May (Muttertag) 21104/SunLast\fB\et\fRlast Sunday in April, 212\fB\et\fRsummer time in Europe 213Easter\fB\et\fREaster 214Ostern-2\fB\et\fRGood Friday (2 days before Easter) 215Paskha\fB\et\fROrthodox Easter 216 217.Ed 218.Sh FILES 219.Bl -tag -width calendar.christian -compact 220.It Pa calendar 221file in current directory. 222.It Pa ~/.calendar 223.Pa calendar 224HOME directory. 225A chdir is done into this directory if it exists. 226.It Pa ~/.calendar/calendar 227calendar file to use if no calendar file exists in the current directory. 228.It Pa ~/.calendar/nomail 229do not send mail if this file exists. 230.El 231.Pp 232The following default calendar files are provided in 233.Pa /usr/share/calendars: 234.Pp 235.Bl -tag -width calendar.southafrica -compact 236.It Pa calendar.all 237File which includes all the default files. 238.It Pa calendar.australia 239Calendar of events in Australia. 240.It Pa calendar.birthday 241Births and deaths of famous (and not-so-famous) people. 242.It Pa calendar.christian 243Christian holidays. 244This calendar should be updated yearly by the local system administrator 245so that roving holidays are set correctly for the current year. 246.It Pa calendar.computer 247Days of special significance to computer people. 248.It Pa calendar.croatian 249Calendar of events in Croatia. 250.It Pa calendar.dutch 251Calendar of events in the Netherlands. 252.It Pa calendar.freebsd 253Birthdays of 254.Fx 255committers. 256.It Pa calendar.french 257Calendar of events in France. 258.It Pa calendar.german 259Calendar of events in Germany. 260.It Pa calendar.history 261Everything else, mostly U.S.\& historical events. 262.It Pa calendar.holiday 263Other holidays, including the not-well-known, obscure, and 264.Em really 265obscure. 266.It Pa calendar.judaic 267Jewish holidays. 268The entries for this calendar have been obtained from the port 269deskutils/hebcal. 270.It Pa calendar.music 271Musical events, births, and deaths. 272Strongly oriented toward rock 'n' roll. 273.It Pa calendar.newzealand 274Calendar of events in New Zealand. 275.It Pa calendar.russian 276Russian calendar. 277.It Pa calendar.southafrica 278Calendar of events in South Africa. 279.It Pa calendar.usholiday 280U.S.\& holidays. 281This calendar should be updated yearly by the local system administrator 282so that roving holidays are set correctly for the current year. 283.It Pa calendar.world 284Includes all calendar files except for national files. 285.El 286.Sh COMPATIBILITY 287The 288.Nm 289program previously selected lines which had the correct date anywhere 290in the line. 291This is no longer true, the date is only recognized when it occurs 292at the beginning of a line. 293.Sh SEE ALSO 294.Xr at 1 , 295.Xr cpp 1 , 296.Xr mail 1 , 297.Xr cron 8 298.Sh HISTORY 299A 300.Nm 301command appeared in 302.At v7 . 303.Sh NOTES 304Chinese New Year is calculated at 120 degrees east of Greenwich, 305which roughly corresponds with the east coast of China. 306For people west of China, this might result that the start of Chinese 307New Year and the day of the related new moon might differ. 308.Pp 309The phases of the moon and the longitude of the sun are calculated 310against the local position which corresponds with 30 degrees times 311the time-difference towards Greenwich. 312.Pp 313The new and full moons are happening on the day indicated: They 314might happen in the time period in the early night or in the late 315evening. 316It doesn't indicate that they are starting in the night on that date. 317.Pp 318Because of minor differences between the output of the formulas 319used and other sources on the Internet, Druids and Werewolves should 320double-check the start and end time of solar and lunar events. 321.Sh BUGS 322The 323.Nm 324utility does not handle Jewish holidays. 325.Pp 326There is no possibility to properly specify the local position 327needed for solar and lunar calculations. 328