On Monday, September 15, 2025 the Moon was in its waning crescent phase, with 37% of its disk illuminated and an age of 23.4 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 | 37% |
| Moon age | 23.4 days |
| Day of the week | Monday |
| Last new moon | August 23, 2025 at 03:06 |
| Next full moon | October 7, 2025 at 00:47 (in 21.5 days) |
| Next new moon | September 21, 2025 at 16:54 (in 6.2 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.
← September 14, 2025 September 16, 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 September 15, 2025 it had completed 79% of the cycle that began with the new moon on August 23, 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 September 15, 2025. For sun times, check sunrise and sunset.