Moon calendar for December 2025
Every day of December 2025 with the Moon's phase and how much of it is lit at 12:00 UTC. The new Moon, the quarters and the full Moon are marked on the day they happen in UTC.
New Moon, quarters and full Moon in December 2025
- Full Moon
- Last quarter
- New Moon
- First quarter
Times are in Coordinated Universal Time (UTC), to the minute, and agree with NASA's published table of Moon phases to within two minutes. Where your browser allows, your own clock is shown under each.
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| December 1: Waxing gibbous, 83% lit | December 2: Waxing gibbous, 91% lit | December 3: Waxing gibbous, 97% lit | December 4: Full Moon, 100% lit | December 5: Waning gibbous, 100% lit | December 6: Waning gibbous, 97% lit | |
| December 7: Waning gibbous, 91% lit | December 8: Waning gibbous, 83% lit | December 9: Waning gibbous, 74% lit | December 10: Waning gibbous, 64% lit | December 11: Last quarter, 54% lit | December 12: Waning crescent, 44% lit | December 13: Waning crescent, 34% lit |
| December 14: Waning crescent, 25% lit | December 15: Waning crescent, 18% lit | December 16: Waning crescent, 11% lit | December 17: Waning crescent, 6% lit | December 18: Waning crescent, 2% lit | December 19: Waning crescent, 0% lit | December 20: New Moon, 0% lit |
| December 21: Waxing crescent, 2% lit | December 22: Waxing crescent, 6% lit | December 23: Waxing crescent, 11% lit | December 24: Waxing crescent, 18% lit | December 25: Waxing crescent, 27% lit | December 26: Waxing crescent, 36% lit | December 27: First quarter, 47% lit |
| December 28: Waxing gibbous, 58% lit | December 29: Waxing gibbous, 69% lit | December 30: Waxing gibbous, 79% lit | December 31: Waxing gibbous, 88% lit |