Moon calendar
Moon phases in May 2026
In May 2026 there are two full moons, on 1 May and 31 May, and the new moon on 16 May. Every night of the month with its phase and how much of the Moon is lit, computed from the same engine the rest of the site runs on.
The exact moments
- Full Moon
- Last Quarter
- New Moon
- First Quarter
- Full Moon
May 2026 carries two full moons. A lunar month is 29.53 days, so a long month occasionally holds the same phase twice — which is where “blue moon” comes from.
Times are UTC. A phase is a moment, not a night: the Moon is “full” at one instant, and looks full for a day either side of it. The live calendar works these out for your own clock and, if you let it, your own horizon.
Every night in May 2026
| Date | Phase | Lit |
|---|---|---|
| Fri 1 | Full Moon Full Moon 17:25 UTC | 99% |
| Sat 2 | Full Moon | 100% |
| Sun 3 | Waning Gibbous | 98% |
| Mon 4 | Waning Gibbous | 95% |
| Tue 5 | Waning Gibbous | 90% |
| Wed 6 | Waning Gibbous | 84% |
| Thu 7 | Waning Gibbous | 77% |
| Fri 8 | Waning Gibbous | 68% |
| Sat 9 | Last Quarter Last Quarter 21:12 UTC | 59% |
| Sun 10 | Last Quarter | 49% |
| Mon 11 | Waning Crescent | 39% |
| Tue 12 | Waning Crescent | 29% |
| Wed 13 | Waning Crescent | 20% |
| Thu 14 | Waning Crescent | 11% |
| Fri 15 | Waning Crescent | 5% |
| Sat 16 | New Moon New Moon 20:03 UTC | 1% |
| Sun 17 | New Moon | 0% |
| Mon 18 | Waxing Crescent | 2% |
| Tue 19 | Waxing Crescent | 7% |
| Wed 20 | Waxing Crescent | 15% |
| Thu 21 | Waxing Crescent | 24% |
| Fri 22 | Waxing Crescent | 34% |
| Sat 23 | First Quarter First Quarter 11:12 UTC | 45% |
| Sun 24 | First Quarter | 56% |
| Mon 25 | Waxing Gibbous | 66% |
| Tue 26 | Waxing Gibbous | 75% |
| Wed 27 | Waxing Gibbous | 83% |
| Thu 28 | Waxing Gibbous | 90% |
| Fri 29 | Waxing Gibbous | 95% |
| Sat 30 | Waxing Gibbous | 98% |
| Sun 31 | Full Moon Full Moon 08:47 UTC | 100% |
Illumination is taken at 00:00 UTC on each date. It changes by a percent or two over a day, which is why the site’s own nightly card computes it for the evening you are actually standing in.
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2026
May in other years