This Wear OS watch face switches views between day and night. During the day (between 8:00 and 19:00) a sun is displayed, while at night (19:00 and 8:00) a full moon is visible. The watch supports a 12/24h display and also shows the step target as a progress bar.
Unfortunately, due to technical limitations, the actual sunrise and sunset cannot be used to switch between the two dials. Instead, the faces are switched at 8:00 and 19:00.
We tested the Watch faces with a Google Pixel Watch 2 and Samsung Galaxy Watch 6.