Moon · September 2025
Moon calendar for Casper, Wyoming, United States: September 2025
Daily moon phases, illumination, moonrise and moonset in Casper, Wyoming, United States for September 2025. Full moon: September 7, 2025. All times are shown in the local time of Casper, Wyoming, United States.
Full moonSunday, September 7, 2025, 1:53 PM
New moonSunday, September 21, 2025, 10:49 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 65% | 3:46 PM | 12:07 AM |
| 2 | Waxing Gibbous | 74% | 4:28 PM | 12:54 AM |
| 3 | Waxing Gibbous | 82% | 5:29 PM | 1:56 AM |
| 4 | Waxing Gibbous | 89% | 5:50 PM | 3:12 AM |
| 5 | Waxing Gibbous | 95% | 6:22 PM | 4:17 AM |
| 6 | Waxing Gibbous | 99% | 6:35 PM | 5:33 AM |
| 7 | Full Moon | 100% | 7:19 PM | 6:29 AM |
| 8 | Waning Gibbous | 99% | 7:36 PM | 7:49 AM |
| 9 | Waning Gibbous | 95% | 7:50 PM | 9:21 AM |
| 10 | Waning Gibbous | 89% | 8:20 PM | 10:24 AM |
| 11 | Waning Gibbous | 80% | 8:35 PM | 11:47 AM |
| 12 | Waning Gibbous | 70% | 9:31 PM | 1:25 PM |
| 13 | Last Quarter | 59% | 10:14 PM | 2:27 PM |
| 14 | Last Quarter | 47% | 11:20 PM | 3:35 PM |
| 15 | Waning Crescent | 36% | — | 4:35 PM |
| 16 | Waning Crescent | 25% | 12:19 AM | 5:34 PM |
| 17 | Waning Crescent | 16% | 1:38 AM | 6:01 PM |
| 18 | Waning Crescent | 9% | 2:49 AM | 6:23 PM |
| 19 | Waning Crescent | 4% | 4:13 AM | 6:36 PM |
| 20 | New Moon | 1% | 5:30 AM | 7:15 PM |
| 21 | New Moon | 0% | 6:24 AM | 7:31 PM |
| 22 | New Moon | 1% | 7:36 AM | 7:38 PM |
| 23 | Waxing Crescent | 4% | 8:26 AM | 8:01 PM |
| 24 | Waxing Crescent | 9% | 9:38 AM | 8:21 PM |
| 25 | Waxing Crescent | 15% | 10:29 AM | 8:40 PM |
| 26 | Waxing Crescent | 22% | 11:41 AM | 9:30 PM |
| 27 | Waxing Crescent | 30% | 12:32 PM | 10:01 PM |
| 28 | Waxing Crescent | 39% | 1:40 PM | 10:37 PM |
| 29 | First Quarter | 49% | 2:25 PM | 11:44 PM |
| 30 | First Quarter | 58% | 3:26 PM | — |
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Frequently asked questions
When is the full moon in September 2025 in Casper, Wyoming, United States?
The full moon peaks on Sunday, September 7, 2025, 1:53 PM (local time).
When is the new moon in September 2025?
The new moon falls on Sunday, September 21, 2025, 10:49 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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