calendar(1) on FreeBSD
The text 922df887973f, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
reminder service
Flags it lists
-
-A -
-B -
-D -
-F -
-U -
-W -
-a -
-d -
-f -
-l -
-t