On Wednesday, December 17, 2025 the Moon was in its waning crescent phase, with 7% of its disk illuminated and an age of 27.3 days since the last new moon. Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon.
Moon data for this date
| Phase | 🌘 Waning Crescent |
|---|---|
| Illumination | 7% |
| Moon age | 27.3 days |
| Day of the week | Wednesday |
| Last new moon | November 20, 2025 at 03:47 |
| Next full moon | January 3, 2026 at 07:03 (in 16.8 days) |
| Next new moon | December 19, 2025 at 22:43 (in 2.4 days) |
The Moon on the surrounding days
Compare the phase and illumination over the three days before and after. Click a day to open its page.
← December 16, 2025 December 18, 2025 →
About the waning crescent
Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon. The phase name comes from the Moon's position in its 29.53-day cycle: on December 17, 2025 it had completed 92% of the cycle that began with the new moon on November 20, 2025.
Looking for another date, such as a birthday? Use the Moon phase on the day I was born tool, see the Moon phase today page with the lunar calendar, or find the day of the week of December 17, 2025. For sun times, check sunrise and sunset.