cal

Display a calendar. More information: https://man.netbsd.org/cal.1.

• Display a calendar for the current month:

cal

• Display a calendar for a specific year:

cal {{year}}

• Display a calendar for a specific month and year:

cal {{month}} {{year}}

• Display the whole calendar for the current year using [j]ulian days (one-based, numbered from January 1):

cal -y -j

• [h]ighlight today and display [3] months spanning the date:

cal -h -3 {{month}} {{year}}

• Display the 2 months [B]efore and 3 [A]fter a specific [m]onth of the current year:

cal -A 3 -B 2 {{month}}

• Display a specific number of months before and after ([C]ontext) the specified month:

cal -C {{months}} {{month}}

• Specify the starting [d]ay of the week (0: Sunday, 1: Monday, ..., 6: Saturday):

cal -d {{0..6}}