Install aclock.app by entering the following commands in the terminal:
sudo apt update sudo apt install aclock.app
Description:
Analog dockapp clock for GNUstep
AClock is an analog clock with display of smooth seconds. It stays in the dock. The display is customizable: . * Seconds hand and its ticking rate * Arabic or Roman numbers, AM/PM * Shadows * Colors of the elements * Alarm and ringing
Homepage: http://gap.nongnu.org/aclock/
Version: 0.4.0-1build4
Section: universe/x11