Moon Phases in May 2028
The dates of the four major moon phases in May 2028:
- First Quarter on May 1 and May 31
- Full Moon on May 8
- Last Quarter on May 16
- New Moon on May 24

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 May 2028
All phase dates and times are in the USA Eastern Time adjusted for Daylight Savings Time for part of the year.

May 1

May 8

May 16

May 24

May 31
| Moon Phase | Date | Time | Season |
|---|---|---|---|
| First Quarter May 2028 | May 1 (Monday) | 10:26 p.m. EDT | Spring |
| Full Moon May 2028 | May 8 (Monday) | 3:49 p.m. EDT | Spring |
| Last Quarter May 2028 | May 16 (Tuesday) | 6:43 a.m. EDT | Spring |
| New Moon May 2028 | May 24 (Wednesday) | 4:16 a.m. EDT | Spring |
| First Quarter May 2028 | May 31 (Wednesday) | 3:36 a.m. EDT | Spring |
