idate(1) on Linux
The text 372d8f9593c3, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
A Gregorian/Meladi to/from Hijri/Islamic date converter
Flags it lists
-
--gregorian -
--help -
--hijri -
--simple -
--umm_alqura -
-g -
-h -
-hi -
-s -
-u