Moon Calendar — May 2027
See the Moon’s phase on every day of May 2027. Full moon occurs on May 20, 2027 (UTC). Select a day to explore its phase and illumination.
Dates and phases are shown in UTC until the page loads, then in your own time zone.
Primary phases in May 2027
| Phase | When | Name | |
|---|---|---|---|
| New moon | May 6, 202710:58 UTC | ||
| First quarter | May 13, 202704:43 UTC | ||
| Full moon | May 20, 202710:58 UTC | Flower Moon | |
| Last quarter | May 28, 202713:57 UTC |
More moon for May 2027
Phase is the same worldwide, but moonrise and moonset depend on where you are — pick your city for tonight's times. See every phase in 2027, the full moon calendar with traditional names, or the other months. Sunrise and sunset for the same dates are on the sunrise & sunset pages.
When is the full moon in May 2027?
May 20, 2027 at 10:58 UTC — the Flower Moon. The calendar above converts that to your own time zone when it loads, which can move it to the day before or after.
When is the new moon in May 2027?
May 6, 2027 at 10:58 UTC. New moon is the darkest night of the month and the best one for stargazing.
Why does the calendar show a different date than another site?
A moon phase happens at a single instant everywhere on Earth, so the calendar date it lands on depends on your time zone. A full moon at 02:00 UTC is still the previous evening across the Americas. This page shows UTC before its JavaScript runs and your own dates afterwards.
What do the percentages mean?
How much of the moon's disc is lit at midday on that date — 0% at new moon, 100% at full. The shape drawn in each cell is the same figure as a picture.