The clock is showing
- 24 hours local solar time / German time
- Babylon's uneven hours from sunrise
- Moving twenty-four shows the Old Bohemian time calculated from sunset
- the position of the sun and moon on the zodiac and the ecliptic
- the moon phase
- Sunrise and Sunset of Sun and Moon
- Astronomical twilight
- The gold star shows star time / Sidereal time

The astronomical clock is adjusted to the local solar time of the Old Town Square in Prague

The clock can be used as an app or widget