On Monday, September 21, 2026 the Moon was in its waxing gibbous phase, with 81% of its disk illuminated and an age of 10.5 days since the last new moon. More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours.
Moon data for this date
| Phase | 🌔 Waxing Gibbous |
|---|---|
| Illumination | 81% |
| Moon age | 10.5 days |
| Day of the week | Monday |
| Last new moon | September 11, 2026 at 00:27 |
| Next full moon | September 26, 2026 at 13:49 (in 5.1 days) |
| Next new moon | October 10, 2026 at 12:50 (in 19.0 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 20, 2026 September 22, 2026 →
About the waxing gibbous
More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours. The phase name comes from the Moon's position in its 29.53-day cycle: on September 21, 2026 it had completed 36% of the cycle that began with the new moon on September 11, 2026.
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 21, 2026. For sun times, check sunrise and sunset.