Moon · May 2027
Moon calendar for Great Falls, Montana, United States: May 2027
Daily moon phases, illumination, moonrise and moonset in Great Falls, Montana, United States for May 2027. Full moon: May 20, 2027. All times are shown in the local time of Great Falls, Montana, United States.
Full moonThursday, May 20, 2027, 3:47 AM
New moonThursday, May 6, 2027, 6:04 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waning Crescent | 23% | 3:37 AM | 3:56 PM |
| 2 | Waning Crescent | 15% | 3:47 AM | 5:16 PM |
| 3 | Waning Crescent | 9% | 4:12 AM | 6:19 PM |
| 4 | Waning Crescent | 4% | 4:22 AM | 7:37 PM |
| 5 | New Moon | 1% | 4:32 AM | 8:45 PM |
| 6 | New Moon | 0% | 5:17 AM | 10:16 PM |
| 7 | Waxing Crescent | 2% | 5:40 AM | 11:38 PM |
| 8 | Waxing Crescent | 7% | 6:21 AM | — |
| 9 | Waxing Crescent | 14% | 7:32 AM | 12:35 AM |
| 10 | Waxing Crescent | 23% | 8:33 AM | 1:40 AM |
| 11 | Waxing Crescent | 33% | 10:12 AM | 2:17 AM |
| 12 | First Quarter | 45% | 11:37 AM | 2:38 AM |
| 13 | First Quarter | 57% | 1:03 PM | 3:20 AM |
| 14 | Waxing Gibbous | 68% | 2:22 PM | 3:34 AM |
| 15 | Waxing Gibbous | 78% | 3:40 PM | 3:44 AM |
| 16 | Waxing Gibbous | 86% | 4:56 PM | 4:09 AM |
| 17 | Waxing Gibbous | 93% | 6:16 PM | 4:22 AM |
| 18 | Waxing Gibbous | 97% | 7:34 PM | 4:40 AM |
| 19 | Full Moon | 99% | 8:29 PM | 5:26 AM |
| 20 | Full Moon | 100% | 9:43 PM | 5:49 AM |
| 21 | Waning Gibbous | 98% | 10:32 PM | 6:24 AM |
| 22 | Waning Gibbous | 94% | 11:35 PM | 7:29 AM |
| 23 | Waning Gibbous | 89% | — | 8:18 AM |
| 24 | Waning Gibbous | 83% | 12:14 AM | 9:30 AM |
| 25 | Waning Gibbous | 75% | 12:29 AM | 10:23 AM |
| 26 | Waning Gibbous | 66% | 1:09 AM | 11:35 AM |
| 27 | Last Quarter | 57% | 1:32 AM | 12:28 PM |
| 28 | Last Quarter | 48% | 1:40 AM | 1:41 PM |
| 29 | Waning Crescent | 38% | 1:54 AM | 2:43 PM |
| 30 | Waning Crescent | 28% | 2:16 AM | 4:04 PM |
| 31 | Waning Crescent | 20% | 2:24 AM | 5:27 PM |
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Frequently asked questions
When is the full moon in May 2027 in Great Falls, Montana, United States?
The full moon peaks on Thursday, May 20, 2027, 3:47 AM (local time).
When is the new moon in May 2027?
The new moon falls on Thursday, May 6, 2027, 6:04 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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