undertime(1) on Linux
The text 9f37989569e2, as Debian 10 (Buster) shipped it.
pick a meeting time
Flags it lists
-
--colors -
--config -
--date -
--default-zone -
--end -
--help -
--no-colors -
--no-default-zone -
--print-zones -
--start -
-d -
-e -
-h -
-s