The border between the blue and dark blue arcs on the 24 hour dial shows sunrise sunset. Hours dial changes to 24 after noon, and back after midnight. Tapping the date launches the agenda. Season dial is divided at the equinoxes and solstices, moon phase is in the center. Orange needle on the month text outer dial shows progress of the year. Tap the moon phase to temporarily hide the hands. With One UI, widgets and apps such as weather are a bezel twist away, so eliminated most launch buttons. The left icon launches a calculator, free in the store. The right phone icon opens contacts. Heart rate dial opens Samsung Health.