cal(1) on FreeBSD
The text 3e354c6c05ba, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE shipped it.
displays a calendar and the date of easter
Flags it lists
-
-J -
-e -
-j -
-m -
-o -
-p -
-s -
-w -
-y