@phocean It’s “Plank” for my favorite apps… very convenient, ease of access. The analog clock is on the default plank: Menu > Accessories > Plank. If you’re talking about the digital clock up top, just right-click > Preferences > 12 hour format.
I’ve never tried Cinnamon, sort of old school MATE (Gnome2) and Openbox (running on Sid here). Have a great evening.