CALENDAR(1) BSD General Commands Manual CALENDAR(1)NAMEcalendar — reminder service
SYNOPSIScalendar [-a] [-A num] [-B num] [-F friday] [-f calendarfile]
[-t dd[.mm[.year]]] [-W num] [-U UTC-offset] [-l longitude]
The calendar utility checks the current directory for a file named
calendar and displays lines that begin with either today's date or tomor‐
row's. On the day before a weekend (normally Friday), events for the
next three days are displayed.
The following options are available:
-A num Print lines from today and the next num days (forward, future).
-a Process the ``calendar'' files of all users and mail the results
to them. This requires super-user privileges.
-B num Print lines from today and the previous num days (backward,
Specify which day of the week is ``Friday'' (the day before the
weekend begins). Default is 5.
Use calendarfile as the default calendar file.
For test purposes only: set date directly to argument values.
-l longitude, -U UTC-offset
Only one is needed: Perform lunar and solar calculations from
this longitude or from this UTC offset. If neither is specified,
the calculations will be based on the difference between UTC time
-W num Print lines from today and the next num days (forward, future).
Ignore weekends when calculating the number of days.
To handle calendars in your national code table you can specify
“LANG=<locale_name>” in the calendar file as early as possible.
To handle the local name of sequences, you can specify them as:
“SEQUENCE=<first> <second> <third> <fourth> <fifth> <last>” in the calen‐
dar file as early as possible.
The names of the following special days are recognized:
Easter Catholic Easter.
Paskha Orthodox Easter.
NewMoon The lunar New Moon.
FullMoon The lunar Full Moon.
MarEquinox The solar equinox in March.
JunSolstice The solar solstice in June.
SepEquinox The solar equinox in March.
DecSolstice The solar solstice in December.
ChineseNewYear The first day of the Chinese year.
These names may be reassigned to their local names via an assignment like
“Easter=Pasen” in the calendar file.
Other lines should begin with a month and day. They may be entered in
almost any format, either numeric or as character strings. If the proper
locale is set, national month and weekday 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.
The names of the recognized special days may be followed by a positive or
negative integer, like: “Easter+3” or “Pashka-4”.
Weekdays may be followed by ``-4'' ... ``+5'' (aliases for last, first,
second, third, fourth) for moving events like ``the last Monday in
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 is not displayed. If the
first character in the line is a <tab> character, it is treated as a con‐
tinuation of the previous line.
The ``calendar'' file is preprocessed by cpp(1), allowing the inclusion
of shared files such as lists of 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 (<tab> characters highlighted by \t
6/15\tJune 15 (if ambiguous, will default to month/day).
Jun. 15\tJune 15.
15 June\tJune 15.
June\tEvery June 1st.
15 *\t15th of every month.
2010/4/15\t15 April 2010
May Sun+2\tsecond Sunday in May (Muttertag)
04/SunLast\tlast Sunday in April,
\tsummer time in Europe
Ostern-2\tGood Friday (2 days before Easter)
FILEScalendar file in current directory
~/.calendar calendar HOME directory. A chdir is done into this
directory if it exists.
calendar file to use if no calendar file exists in
the current directory.
~/.calendar/nomail do not send mail if this file exists.
The following default calendar files are provided in
calendar.all File which includes all the default files.
calendar.australia Calendar of events in Australia.
calendar.birthday Births and deaths of famous (and not-so-famous)
calendar.christian Christian holidays. This calendar should be
updated yearly by the local system administrator so
that roving holidays are set correctly for the cur‐
calendar.computer Days of special significance to computer people.
calendar.croatian Calendar of events in Croatia.
calendar.dutch Calendar of events in the Netherlands.
calendar.freebsd Birthdays of FreeBSD committers.
calendar.french Calendar of events in France.
calendar.german Calendar of events in Germany.
calendar.history Everything else, mostly U.S. historical events.
calendar.holiday Other holidays, including the not-well-known,
obscure, and really obscure.
calendar.judaic Jewish holidays. The entries for this calendar
have been obtained from the port deskutils/hebcal.
calendar.music Musical events, births, and deaths. Strongly ori‐
ented toward rock 'n' roll.
calendar.newzealand Calendar of events in New Zealand.
calendar.russian Russian calendar.
calendar.southafrica Calendar of events in South Africa.
calendar.usholiday U.S. holidays. This calendar should be updated
yearly by the local system administrator so that
roving holidays are set correctly for the current
calendar.world Includes all calendar files except for national
The calendar program previously selected lines which had the correct date
anywhere in the line. This is no longer true, the date is only recog‐
nized when it occurs at the beginning of a line.
SEE ALSOat(1), cpp(1), mail(1), cron(8)HISTORY
A calendar command appeared in Version 7 AT&T UNIX.
Chinese New Year is calculated at 120 degrees east of Greenwich, which
roughly corresponds with the east coast of China. For people west of
China, this might result that the start of Chinese New Year and the day
of the related new moon might differ.
The phases of the moon and the longitude of the sun are calculated
against the local position which corresponds with 30 degrees times the
time-difference towards Greenwich.
The new and full moons are happening on the day indicated: They might
happen in the time period in the early night or in the late evening. It
doesn't indicate that they are starting in the night on that date.
Because of minor differences between the output of the formulas used and
other sources on the Internet, Druids and Werewolves should double-check
the start and end time of solar and lunar events.
The calendar utility does not handle Jewish holidays.
There is no possibility to properly specify the local position needed for
solar and lunar calculations.
BSD June 13, 2002 BSD