yearcal — print a calendar for one or more years
yearcal prints the calendar for
year can be negative or positive, and is a Proleptic Gregorian year number.
yearcal outputs TeleType Model 37 control sequences for boldface and underline, which can be interpreted by less(1) or converted to your terminal's own control sequences with ul(1). The first column is Sunday, and months are printed on the right-hand side.