On Monday, September 13, 2021 the Moon was in its first quarter phase, with 42% of its disk illuminated and an age of 6.6 days since the last new moon. Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight.
Moon data for this date
| Phase | 🌓 First Quarter |
|---|---|
| Illumination | 42% |
| Moon age | 6.6 days |
| Day of the week | Monday |
| Last new moon | September 6, 2021 at 21:52 |
| Next full moon | September 20, 2021 at 20:55 (in 7.4 days) |
| Next new moon | October 6, 2021 at 08:05 (in 22.8 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 12, 2021 September 14, 2021 →
About the first quarter
Half of the disk is lit, about a week after the new moon. The Moon is easy to see in the early evening and sets around midnight. The phase name comes from the Moon's position in its 29.53-day cycle: on September 13, 2021 it had completed 22% 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 13, 2021. For sun times, check sunrise and sunset.