ical(1) on Linux
The text c276e1ce9b8c, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
A Hijri/Islamic calendar (and converter)
Flags it lists
-
--dual -
--fixed_view -
--gregorian -
--help -
--hijri -
--umm_alqura -
-d -
-f -
-g -
-h -
-hi -
-u