On Saturday, September 18, 2027 the Moon will be in its waning gibbous phase, with 89% of its disk illuminated and an age of 17.9 days since the last new moon. The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks.
Moon data for this date
| Phase | 🌖 Waning Gibbous |
|---|---|
| Illumination | 89% |
| Moon age | 17.9 days |
| Day of the week | Saturday |
| Last new moon | August 31, 2027 at 14:41 |
| Next full moon | October 15, 2027 at 10:47 (in 26.9 days) |
| Next new moon | September 29, 2027 at 23:36 (in 11.5 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 17, 2027 September 19, 2027 →
About the waning gibbous
The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks. The phase name comes from the Moon's position in its 29.53-day cycle: on September 18, 2027 it had completed 61% of the cycle that began with the new moon on August 31, 2027.
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 18, 2027. For sun times, check sunrise and sunset.