CAL(1)                       General Commands Manual                      CAL(1)

     cal, ncal – displays a calendar and the date of Easter

     cal [-3hjy] [-A number] [-B number] [[month] year]
     cal [-3hj] [-A number] [-B number] -m month [year]
     ncal [-3hjJpwy] [-A number] [-B number] [-s country_code] [[month] year]
     ncal [-3hJeo] [-A number] [-B number] [year]
     ncal [-CN] [-H yyyy-mm-dd] [-d yyyy-mm]

     The cal utility displays a simple calendar in traditional format and ncal
     offers an alternative layout, more options and the date of Easter.  The new
     format is a little cramped but it makes a year fit on a 25x80 terminal.  If
     arguments are not specified, the current month is displayed.

     The options are as follows:

     -h      Turns off highlighting of today.

     -J      Display Julian Calendar, if combined with the -e option, display
             date of Easter according to the Julian Calendar.

     -e      Display date of Easter (for western churches).

     -j      Display Julian days (days one-based, numbered from January 1).

     -m month
             Display the specified month.  If month is specified as a decimal
             number, it may be followed by the letter ‘f’ or ‘p’ to indicate the
             following or preceding month of that number, respectively.

     -o      Display date of Orthodox Easter (Greek and Russian Orthodox

     -p      Print the country codes and switching days from Julian to Gregorian
             Calendar as they are assumed by ncal.  The country code as
             determined from the local environment is marked with an asterisk.

     -s country_code
             Assume the switch from Julian to Gregorian Calendar at the date
             associated with the country_code.  If not specified, ncal tries to
             guess the switch date from the local environment or falls back to
             September 2, 1752.  This was when Great Britain and her colonies
             switched to the Gregorian Calendar.

     -w      Print the number of the week below each week column.

     -y      Display a calendar for the specified year.

     -3      Display the previous, current and next month surrounding today.

     -A number
             Display the number of months after the current month.

     -B number
             Display the number of months before the current month.

     -C      Switch to cal mode.

     -N      Switch to ncal mode.

     -d yyyy-mm
             Use yyyy-mm as the current date (for debugging of date selection).

     -H yyyy-mm-dd
             Use yyyy-mm-dd as the current date (for debugging of highlighting).

     A single parameter specifies the year (1–9999) to be displayed; note the
     year must be fully specified: “cal 89” will not display a calendar for
     1989.  Two parameters denote the month and year; the month is either a
     number between 1 and 12, or a full or abbreviated name as specified by the
     current locale.  Month and year default to those of the current system
     clock and time zone (so “cal -m 8” will display a calendar for the month of
     August in the current year).

     Not all options can be used together. For example “-3 -A 2 -B 3 -y -m 7”
     would mean: show me the three months around the seventh month, three before
     that, two after that and the whole year.  ncal will warn about these

     A year starts on January 1.

     Highlighting of dates is disabled if stdout is not a tty.

     calendar(3), strftime(3)

     A cal command appeared in Version 5 AT&T UNIX.  The ncal command appeared
     in FreeBSD 2.2.6.

     The ncal command and manual were written by Wolfgang Helbig

     The assignment of Julian–Gregorian switching dates to country codes is
     historically naive for many countries.

     Not all options are compatible and using them in different orders will give
     varying results.

macOS 12.1                       March 14, 2009                       macOS 12.1