Moon Phases in September 2027
The dates of the four major moon phases in September 2027:
- First Quarter on September 7
- Full Moon on September 15
- Last Quarter on September 23
- New Moon on September 29
The four phases of the moon
A new moon is the first lunar phase that happens about once a month or 29.53 days on average. The moon itself is not visible, though you may be able to “see” it because it blocks the visibility of the stars behind it.
A full moon occurs when the Earth is directly between the Sun and Moon, so that the moon appears completely illuminated. It happens about once a month, or 29.53 days on average.
The first quarter moon occurs between the new moon and full moon, and the last quarter moon occurs after the full moon and before the next new moon.
Moon Phases Calendar for September 2027
All phase dates and times are in the USA Eastern Time adjusted for Daylight Savings Time for part of the year.
September 7
September 15
September 23
September 29
| Moon Phase | Date | Time | Season |
|---|---|---|---|
| First Quarter September 2027 | September 7 (Tuesday) | 2:31 p.m. EDT | Summer |
| Full Moon September 2027 | September 15 (Wednesday) | 7:04 p.m. EDT | Summer |
| Last Quarter September 2027 | September 23 (Thursday) | 6:20 a.m. EDT | Autumn |
| New Moon September 2027 | September 29 (Wednesday) | 10:36 p.m. EDT | Autumn |