clock
clock(1) is a command-line clock. It displays the running wall clock time and is accurate to about 1/10 second.
Type a 'q', 'Q', or Control-C to exit.
None.
1 Quit by user (with q key)
2 Quit by Control-C or SIGKILL
3 Error (bad arguments)
The time is always shown with a 24-hour clock.
Jay Ts (http://jayts.com)
Copyright 2019 Jay Ts
Released under the GNU Public License, version 3.0 (GPLv3) (http://www.gnu.org/licenses/gpl.html)