Moon · December 2026
Moon calendar for Simi Valley, California, United States: December 2026
Daily moon phases, illumination, moonrise and moonset in Simi Valley, California, United States for December 2026. Full moon: December 23, 2026. All times are shown in the local time of Simi Valley, California, United States.
Full moonWednesday, December 23, 2026, 5:16 PM
New moonTuesday, December 8, 2026, 3:17 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Last Quarter | 45% | — | 12:37 PM |
| 2 | Waning Crescent | 34% | 12:23 AM | 1:28 PM |
| 3 | Waning Crescent | 24% | 1:34 AM | 1:38 PM |
| 4 | Waning Crescent | 16% | 2:26 AM | 2:16 PM |
| 5 | Waning Crescent | 9% | 3:36 AM | 2:32 PM |
| 6 | Waning Crescent | 4% | 4:26 AM | 3:30 PM |
| 7 | Waning Crescent | 1% | 5:36 AM | 4:00 PM |
| 8 | New Moon | 0% | 6:25 AM | 4:34 PM |
| 9 | New Moon | 1% | 7:32 AM | 5:36 PM |
| 10 | Waxing Crescent | 3% | 8:15 AM | 6:24 PM |
| 11 | Waxing Crescent | 7% | 8:43 AM | 7:33 PM |
| 12 | Waxing Crescent | 13% | 9:35 AM | 8:23 PM |
| 13 | Waxing Crescent | 20% | 10:04 AM | 9:32 PM |
| 14 | Waxing Crescent | 28% | 10:26 AM | 10:22 PM |
| 15 | Waxing Crescent | 37% | 10:53 AM | 11:31 PM |
| 16 | First Quarter | 47% | 11:33 AM | — |
| 17 | First Quarter | 58% | 11:45 AM | 12:21 AM |
| 18 | Waxing Gibbous | 68% | 12:22 PM | 1:32 AM |
| 19 | Waxing Gibbous | 78% | 12:37 PM | 2:25 AM |
| 20 | Waxing Gibbous | 86% | 1:34 PM | 3:38 AM |
| 21 | Waxing Gibbous | 93% | 2:16 PM | 4:45 AM |
| 22 | Waxing Gibbous | 98% | 3:09 PM | 6:09 AM |
| 23 | Full Moon | 100% | 4:13 PM | 7:25 AM |
| 24 | Full Moon | 99% | 5:29 PM | 8:15 AM |
| 25 | Waning Gibbous | 96% | 6:26 PM | 9:06 AM |
| 26 | Waning Gibbous | 90% | 7:44 PM | 9:39 AM |
| 27 | Waning Gibbous | 82% | 8:57 PM | 10:19 AM |
| 28 | Waning Gibbous | 72% | 10:16 PM | 10:37 AM |
| 29 | Waning Gibbous | 61% | 11:24 PM | 11:28 AM |
| 30 | Last Quarter | 51% | — | 11:39 AM |
| 31 | Last Quarter | 40% | 12:21 AM | 12:17 PM |
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Frequently asked questions
When is the full moon in December 2026 in Simi Valley, California, United States?
The full moon peaks on Wednesday, December 23, 2026, 5:16 PM (local time).
When is the new moon in December 2026?
The new moon falls on Tuesday, December 8, 2026, 3:17 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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