pal(1) on Linux
The text fe5f13d34e71, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
calendar with events
Flags it lists
-
--color -
--help -
--html -
--latex -
--mail -
--nocolor -
--version -
-c -
-d -
-f -
-h -
-m -
-p -
-r -
-s -
-u -
-v -
-x