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CALENDAR(1)		   OpenBSD Reference Manual		   CALENDAR(1)

NAME
     calendar - reminder service

SYNOPSIS
     calendar [-ab] [-A num] [-B num] [-f calendarfile] [-t [[[cc]yy][mm]]dd]

DESCRIPTION
     The calendar utility checks the current directory or the directory
     specified by the CALENDAR_DIR environment variable for a file named
     calendar and displays lines that begin with either today's date or
     tomorrow's.  On Fridays, events on Friday through Monday are displayed.

     The options are as follows:

     -A num  Print lines from today and next num days (forward, future).

     -a	     Process the ``calendar'' files of all users and mail the results
	     to them.  This requires superuser privileges.

     -B num  Print lines from today and previous num days (backward, past).

     -b	     Enforce special date calculation mode for KOI8 calendars.

     -f calendarfile
	     Use calendarfile as the default calendar file.

     -t [[[cc]yy][mm]]dd
	     Act like the specified value is ``today'' instead of using the
	     current date.

     To handle calendars in your national code table you can specify
     ``LANG=<locale_name>'' in the calendar file as early as possible.	To
     handle national Easter names in the calendars, ``Easter=<national_name>''
     (for Catholic Easter) or ``Paskha=<national_name>'' (for Orthodox Easter)
     can be used.

     The ``CALENDAR'' variable can be used to specify the style.  Only
     `Julian' and `Gregorian' styles are currently supported.  Use
     ``CALENDAR='' to return to the default (Gregorian).

     To enforce special date calculation mode for Cyrillic calendars you
     should specify ``LANG=<local_name>'' and ``BODUN=<bodun_prefix>'' where
     <local_name> can be ru_RU.KOI8-R, uk_UA.KOI8-U or by_BY.KOI8-B.

     Other lines should begin with a month and day.  They may be entered in
     almost any format, either numeric or as character strings.	 If proper
     locale is set, national months and weekdays names can be used.  A single
     asterisk (`*') matches every month.  A day without a month matches that
     day of every week.	 A month without a day matches the first of that
     month.  Two numbers default to the month followed by the day.  Lines with
     leading tabs default to the last entered date, allowing multiple line
     specifications for a single date.	``Easter'' (may be followed by a
     positive or negative integer) is Easter for this year.  ``Paskha'' (may
     be followed by a positive or negative integer) is Orthodox Easter for
     this year.	 Weekdays may be followed by ``-4'' ... ``+5'' (aliases last,
     first, second, third, fourth) for moving events like ``the last Monday in
     April''.

     By convention, dates followed by an asterisk (`*') are not fixed, i.e.,
     change from year to year.

     Day descriptions start after the first <tab> character in the line; if
     the line does not contain a <tab> character, it isn't printed out.	 If
     the first character in the line is a <tab> character, it is treated as
     the continuation of the previous description.

     The calendar file is preprocessed by cpp(1), allowing the inclusion of
     shared files such as company holidays or meetings.	 If the shared file is
     not referenced by a full pathname, cpp(1) searches in the current (or
     home) directory first, and then in the directory /usr/share/calendar.
     Empty lines and lines protected by the C commenting syntax (/* ... */)
     are ignored.

     Some possible calendar entries (a \t sequence denotes a <tab> character):

	   LANG=C
	   Easter=Ostern

	   #include <calendar.usholiday>
	   #include <calendar.birthday>

	   6/15\tJune 15 (if ambiguous, will default to month/day).
	   Jun. 15\tJune 15.
	   15 June\tJune 15.
	   Thursday\tEvery Thursday.
	   June\tEvery June 1st.
	   15 *\t15th of every month.

	   May Sun+2\tsecond Sunday in May (Muttertag)
	   04/SunLast\tlast Sunday in April,
	   \tsummer time in Europe
	   Easter\tEaster
	   Ostern-2\tGood Friday (2 days before Easter)
	   Paskha\tOrthodox Easter

FILES
     calendar		   File in current directory.
     ~/.calendar	   Directory in the user's home directory (which
			   calendar changes into, if it exists).
     ~/.calendar/calendar  File to use if no calendar file exists in the
			   current directory.
     ~/.calendar/nomail	   calendar will not send mail if this file exists.
     calendar.all	   International and national calendar files.
     calendar.birthday	   Births and deaths of famous (and not-so-famous)
			   people.
     calendar.christian	   Christian holidays (should be updated yearly by the
			   local system administrator so that roving holidays
			   are set correctly for the current year).
     calendar.computer	   Days of special significance to computer people.
     calendar.croatian	   Croatian calendar.
     calendar.discord	   Discordian calendar (all rites reversed).
     calendar.fictional	   Fantasy and fiction dates (mostly LOTR).
     calendar.french	   French calendar.
     calendar.german	   German calendar.
     calendar.history	   Miscellaneous history.
     calendar.holiday	   Other holidays (including the not-well-known,
			   obscure, and really obscure).
     calendar.judaic	   Jewish holidays (should be updated yearly by the
			   local system administrator so that roving holidays
			   are set correctly for the current year).
     calendar.music	   Musical events, births, and deaths (strongly
			   oriented toward rock n' roll).
     calendar.openbsd	   OpenBSD related events.
     calendar.pagan	   Pagan holidays, celebrations and festivals.
     calendar.russian	   Russian calendar.
     calendar.space	   Cosmic history.
     calendar.ushistory	   U.S. history.
     calendar.usholiday	   U.S. holidays.
     calendar.world	   World wide calendar.

SEE ALSO
     at(1), cal(1), cpp(1), mail(1), cron(8)

STANDARDS
     The calendar program previously selected lines which had the correct date
     anywhere in the line.  This is no longer true: the date is only
     recognized when it occurs at the beginning of a line.

HISTORY
     A calendar command appeared in Version 7 AT&T UNIX.

BUGS
     calendar doesn't handle all Jewish holidays or moon phases.

OpenBSD 4.9			 May 31, 2007			   OpenBSD 4.9
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