mondphasen uhrIt's fascinating how a distant celestial body can influence us in our everyday lives. You've probably woken up in the morning completely exhausted and only realized why you slept so badly after looking at the calendar: it's a full moon. To prevent this from happening to you in future, the moon phase clock shows you the current phase of the moon at any time of day or night. The clock follows the celestial body's natural cycle of 29. 5 days exactly.