https://apps.garmin.com/en-GB/apps/6a3e7f2a-7ae9-45ff-8741-b09b274964fc
Orbis has a 24 hour dial, giving you a visual representation of your day. The dial is split into 24 hours, with midnight at the bottom and midday at the top. A blue bar running around the outside of the dial indicates sunrise and sunset. Just inside that is the red bar which indicates the current time.
The time is also displayed in 24 hour digital format, along with the date just below it. Above the time there is a Bluetooth indicator, a battery charge indicator, and a count of pending notifications.
The watch face has two themes - Light and Dark, controlled via the app settings.
The source code is on GitHub:
https://github.com/jon-hanson/orbis
The watch dials are pre-rendered in Java to obtain sub-pixel rendering and anti-aliasing, the code for which is also in the GitHub repo.