ncal - Displays a calendar and the date of Easter.
Display the current month:
ncal
Display current month without highlighting today's date:
ncal -h
Display week numbers:
ncal -w
Display Weeks starting on Monday:
ncal -M
Display country codes:
ncal -p
Display calendar for a specific month (april):
ncal -m 4
Display calendar for a specific year (2001):
ncal -y 2001
Display the previous, current, and the next month:
ncal -3
Display the current and next two months:
ncal -A 2
Display the previous two months and the current month:
ncal -B 2
Display five months with the current month in the middle:
ncal -B2 -A2
Display a specific month and year:
ncal -d 2001-01
Display Julian days (days one-based which numbered from January 1):
ncal -j