Moon · December 2027
Moon calendar for Helena, Montana, United States: December 2027
Daily moon phases, illumination, moonrise and moonset in Helena, Montana, United States for December 2027. Full moon: December 13, 2027. All times are shown in the local time of Helena, Montana, United States.
Full moonMonday, December 13, 2027, 11:08 AM
New moonMonday, December 27, 2027, 10:43 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Crescent | 14% | 10:34 AM | 8:21 PM |
| 2 | Waxing Crescent | 21% | 11:24 AM | 9:34 PM |
| 3 | Waxing Crescent | 29% | 11:38 AM | 10:26 PM |
| 4 | Waxing Crescent | 38% | 11:53 AM | 11:37 PM |
| 5 | First Quarter | 47% | 12:17 PM | — |
| 6 | First Quarter | 56% | 12:25 PM | 12:30 AM |
| 7 | Waxing Gibbous | 66% | 12:33 PM | 1:42 AM |
| 8 | Waxing Gibbous | 75% | 1:08 PM | 2:42 AM |
| 9 | Waxing Gibbous | 83% | 1:32 PM | 4:03 AM |
| 10 | Waxing Gibbous | 90% | 1:46 PM | 5:26 AM |
| 11 | Waxing Gibbous | 95% | 2:19 PM | 6:25 AM |
| 12 | Waxing Gibbous | 99% | 3:08 PM | 7:44 AM |
| 13 | Full Moon | 100% | 4:00 PM | 8:42 AM |
| 14 | Waning Gibbous | 99% | 5:21 PM | 9:42 AM |
| 15 | Waning Gibbous | 95% | 6:24 PM | 10:26 AM |
| 16 | Waning Gibbous | 88% | 7:53 PM | 11:12 AM |
| 17 | Waning Gibbous | 79% | 9:29 PM | 11:36 AM |
| 18 | Waning Gibbous | 69% | 10:30 PM | 11:51 AM |
| 19 | Last Quarter | 58% | — | 12:18 PM |
| 20 | Last Quarter | 46% | 12:02 AM | 12:27 PM |
| 21 | Waning Crescent | 35% | 1:29 AM | 12:59 PM |
| 22 | Waning Crescent | 25% | 2:27 AM | 1:32 PM |
| 23 | Waning Crescent | 16% | 3:50 AM | 1:50 PM |
| 24 | Waning Crescent | 9% | 5:15 AM | 2:25 PM |
| 25 | Waning Crescent | 4% | 6:16 AM | 3:25 PM |
| 26 | New Moon | 1% | 7:24 AM | 4:10 PM |
| 27 | New Moon | 0% | 8:08 AM | 5:16 PM |
| 28 | Waxing Crescent | 1% | 8:33 AM | 6:14 PM |
| 29 | Waxing Crescent | 4% | 9:26 AM | 7:28 PM |
| 30 | Waxing Crescent | 8% | 9:40 AM | 8:21 PM |
| 31 | Waxing Crescent | 14% | 10:02 AM | 9:33 PM |
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Frequently asked questions
When is the full moon in December 2027 in Helena, Montana, United States?
The full moon peaks on Monday, December 13, 2027, 11:08 AM (local time).
When is the new moon in December 2027?
The new moon falls on Monday, December 27, 2027, 10:43 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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