Moon · May 2027
Moon calendar for Helena, Montana, United States: May 2027
Daily moon phases, illumination, moonrise and moonset in Helena, Montana, United States for May 2027. Full moon: May 20, 2027. All times are shown in the local time of Helena, 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% | 3:38 AM | 4:02 PM |
| 2 | Waning Crescent | 15% | 3:51 AM | 5:20 PM |
| 3 | Waning Crescent | 9% | 4:14 AM | 6:20 PM |
| 4 | Waning Crescent | 4% | 4:24 AM | 7:37 PM |
| 5 | New Moon | 1% | 4:38 AM | 8:43 PM |
| 6 | New Moon | 0% | 5:24 AM | 10:14 PM |
| 7 | Waxing Crescent | 2% | 5:47 AM | 11:36 PM |
| 8 | Waxing Crescent | 7% | 6:26 AM | — |
| 9 | Waxing Crescent | 14% | 7:37 AM | 12:32 AM |
| 10 | Waxing Crescent | 23% | 8:44 AM | 1:38 AM |
| 11 | Waxing Crescent | 33% | 10:17 AM | 2:16 AM |
| 12 | First Quarter | 45% | 11:41 AM | 2:36 AM |
| 13 | First Quarter | 57% | 1:15 PM | 3:22 AM |
| 14 | Waxing Gibbous | 68% | 2:24 PM | 3:35 AM |
| 15 | Waxing Gibbous | 78% | 3:42 PM | 3:46 AM |
| 16 | Waxing Gibbous | 86% | 5:01 PM | 4:13 AM |
| 17 | Waxing Gibbous | 93% | 6:18 PM | 4:24 AM |
| 18 | Waxing Gibbous | 97% | 7:34 PM | 4:44 AM |
| 19 | Full Moon | 99% | 8:29 PM | 5:30 AM |
| 20 | Full Moon | 100% | 9:42 PM | 5:51 AM |
| 21 | Waning Gibbous | 98% | 10:31 PM | 6:28 AM |
| 22 | Waning Gibbous | 94% | 11:35 PM | 7:34 AM |
| 23 | Waning Gibbous | 89% | — | 8:22 AM |
| 24 | Waning Gibbous | 83% | 12:13 AM | 9:34 AM |
| 25 | Waning Gibbous | 75% | 12:29 AM | 10:25 AM |
| 26 | Waning Gibbous | 66% | 1:11 AM | 11:37 AM |
| 27 | Last Quarter | 57% | 1:33 AM | 12:31 PM |
| 28 | Last Quarter | 48% | 1:41 AM | 1:45 PM |
| 29 | Waning Crescent | 38% | 1:59 AM | 2:49 PM |
| 30 | Waning Crescent | 28% | 2:19 AM | 4:07 PM |
| 31 | Waning Crescent | 20% | 2:26 AM | 5:28 PM |
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Frequently asked questions
When is the full moon in May 2027 in Helena, 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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