rdate(8) on OpenBSD
The text 2aea505f5b07, as OpenBSD 7.2, OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7, OpenBSD 6.6, OpenBSD 6.5 shipped it.
set the system's date from a remote host
Flags it lists
-
-4 -
-6 -
-a -
-c -
-n -
-o -
-p -
-s -
-v