Display Julian Calendar, if combined with the -e option, display date of easter according to the Julian Calendar.
Display date of easter (for western churches).
Display Julian days (days one-based, numbered from January 1).
Display the specified month.
Display date of orthodox easter (Greek and Russian Orthodox Churches).
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.
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.
Print the number of the week below each week column.
Display a calendar for the specified year.
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).