Moon · December 2025
Moon calendar for Gaithersburg, Maryland, United States: December 2025
Daily moon phases, illumination, moonrise and moonset in Gaithersburg, Maryland, United States for December 2025. Full moon: December 4, 2025. All times are shown in the local time of Gaithersburg, Maryland, United States.
Full moonThursday, December 4, 2025, 6:18 PM
New moonFriday, December 19, 2025, 9:59 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 86% | 1:53 PM | 3:36 AM |
| 2 | Waxing Gibbous | 93% | 2:24 PM | 4:42 AM |
| 3 | Waxing Gibbous | 98% | 3:10 PM | 6:15 AM |
| 4 | Full Moon | 100% | 3:47 PM | 7:35 AM |
| 5 | Full Moon | 99% | 4:37 PM | 8:34 AM |
| 6 | Waning Gibbous | 96% | 5:55 PM | 9:45 AM |
| 7 | Waning Gibbous | 90% | 7:47 PM | 10:28 AM |
| 8 | Waning Gibbous | 82% | 8:24 PM | 11:28 AM |
| 9 | Waning Gibbous | 73% | 9:39 PM | 11:43 AM |
| 10 | Waning Gibbous | 63% | 10:36 PM | 12:17 PM |
| 11 | Last Quarter | 52% | 11:50 PM | 12:26 PM |
| 12 | Last Quarter | 42% | — | 12:54 PM |
| 13 | Waning Crescent | 33% | 12:52 AM | 1:29 PM |
| 14 | Waning Crescent | 24% | 1:57 AM | 1:37 PM |
| 15 | Waning Crescent | 16% | 2:57 AM | 2:08 PM |
| 16 | Waning Crescent | 10% | 3:59 AM | 2:25 PM |
| 17 | Waning Crescent | 5% | 5:01 AM | 3:15 PM |
| 18 | Waning Crescent | 2% | 5:59 AM | 3:43 PM |
| 19 | New Moon | 0% | 6:51 AM | 4:26 PM |
| 20 | New Moon | 0% | 7:44 AM | 5:34 PM |
| 21 | Waxing Crescent | 3% | 8:26 AM | 6:24 PM |
| 22 | Waxing Crescent | 6% | 9:23 AM | 7:36 PM |
| 23 | Waxing Crescent | 12% | 9:42 AM | 8:29 PM |
| 24 | Waxing Crescent | 20% | 10:19 AM | 9:43 PM |
| 25 | Waxing Crescent | 29% | 10:30 AM | 10:52 PM |
| 26 | First Quarter | 40% | 11:16 AM | — |
| 27 | First Quarter | 51% | 11:36 AM | 12:10 AM |
| 28 | Waxing Gibbous | 62% | 11:53 AM | 1:29 AM |
| 29 | Waxing Gibbous | 73% | 12:24 PM | 2:25 AM |
| 30 | Waxing Gibbous | 83% | 12:58 PM | 3:29 AM |
| 31 | Waxing Gibbous | 91% | 1:40 PM | 5:21 AM |
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Frequently asked questions
When is the full moon in December 2025 in Gaithersburg, Maryland, United States?
The full moon peaks on Thursday, December 4, 2025, 6:18 PM (local time).
When is the new moon in December 2025?
The new moon falls on Friday, December 19, 2025, 9:59 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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