Moon · September 2027
Moon calendar for Great Falls, Montana, United States: September 2027
Daily moon phases, illumination, moonrise and moonset in Great Falls, Montana, United States for September 2027. Full moon: September 15, 2027. All times are shown in the local time of Great Falls, Montana, United States.
Full moonWednesday, September 15, 2027, 9:52 PM
New moonWednesday, September 29, 2027, 5:45 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Crescent | 2% | 7:40 AM | 8:30 PM |
| 2 | Waxing Crescent | 6% | 8:59 AM | 9:01 PM |
| 3 | Waxing Crescent | 12% | 10:19 AM | 9:31 PM |
| 4 | Waxing Crescent | 20% | 11:36 AM | 9:44 PM |
| 5 | Waxing Crescent | 30% | 12:37 PM | 10:19 PM |
| 6 | Waxing Crescent | 39% | 1:58 PM | 10:52 PM |
| 7 | First Quarter | 49% | 3:05 PM | 11:43 PM |
| 8 | First Quarter | 59% | 3:54 PM | — |
| 9 | Waxing Gibbous | 69% | 4:29 PM | 12:30 AM |
| 10 | Waxing Gibbous | 77% | 5:22 PM | 1:40 AM |
| 11 | Waxing Gibbous | 85% | 5:40 PM | 2:36 AM |
| 12 | Waxing Gibbous | 91% | 6:04 PM | 3:46 AM |
| 13 | Waxing Gibbous | 95% | 6:21 PM | 4:54 AM |
| 14 | Waxing Gibbous | 98% | 6:27 PM | 6:04 AM |
| 15 | Full Moon | 100% | 6:41 PM | 7:18 AM |
| 16 | Full Moon | 99% | 7:18 PM | 8:17 AM |
| 17 | Waning Gibbous | 97% | 7:32 PM | 9:33 AM |
| 18 | Waning Gibbous | 92% | 7:42 PM | 10:28 AM |
| 19 | Waning Gibbous | 86% | 8:14 PM | 11:49 AM |
| 20 | Waning Gibbous | 78% | 8:31 PM | 1:21 PM |
| 21 | Waning Gibbous | 68% | 9:32 PM | 2:24 PM |
| 22 | Last Quarter | 57% | 10:21 PM | 3:39 PM |
| 23 | Last Quarter | 45% | 11:41 PM | 4:24 PM |
| 24 | Waning Crescent | 34% | — | 5:17 PM |
| 25 | Waning Crescent | 23% | 1:12 AM | 5:39 PM |
| 26 | Waning Crescent | 14% | 2:25 AM | 6:06 PM |
| 27 | Waning Crescent | 7% | 3:56 AM | 6:22 PM |
| 28 | Waning Crescent | 2% | 5:30 AM | 6:33 PM |
| 29 | New Moon | 0% | 6:29 AM | 7:09 PM |
| 30 | New Moon | 1% | 7:56 AM | 7:32 PM |
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Frequently asked questions
When is the full moon in September 2027 in Great Falls, Montana, United States?
The full moon peaks on Wednesday, September 15, 2027, 9:52 PM (local time).
When is the new moon in September 2027?
The new moon falls on Wednesday, September 29, 2027, 5:45 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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