On Tuesday, September 21, 2021 the Moon was in its full moon phase, with 100% of its disk illuminated and an age of 14.6 days since the last new moon. The whole disk is lit: the Moon rises as the Sun sets and stays up all night. It is the brightest and most photographed phase.
Moon data for this date
| Phase | 🌕 Full Moon |
|---|---|
| Illumination | 100% |
| Moon age | 14.6 days |
| Day of the week | Tuesday |
| Last new moon | September 6, 2021 at 21:52 |
| Next full moon | October 20, 2021 at 11:57 (in 29.0 days) |
| Next new moon | October 6, 2021 at 08:05 (in 14.8 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, 2021 September 22, 2021 →
About the full moon
The whole disk is lit: the Moon rises as the Sun sets and stays up all night. It is the brightest and most photographed phase. The phase name comes from the Moon's position in its 29.53-day cycle: on September 21, 2021 it had completed 50% of the cycle that began with the new moon on September 6, 2021.
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, 2021. For sun times, check sunrise and sunset.