Moon · April 2026
Moon calendar for Boulder, Colorado, United States: April 2026
Daily moon phases, illumination, moonrise and moonset in Boulder, Colorado, United States for April 2026. Full moon: April 1, 2026. All times are shown in the local time of Boulder, Colorado, United States.
Full moonWednesday, April 1, 2026, 6:27 PM
New moonFriday, April 17, 2026, 5:45 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Full Moon | 100% | 7:25 PM | 6:36 AM |
| 2 | Full Moon | 99% | 8:20 PM | 7:21 AM |
| 3 | Waning Gibbous | 97% | 9:30 PM | 7:35 AM |
| 4 | Waning Gibbous | 92% | 10:21 PM | 8:00 AM |
| 5 | Waning Gibbous | 87% | 11:31 PM | 8:25 AM |
| 6 | Waning Gibbous | 80% | — | 9:19 AM |
| 7 | Waning Gibbous | 72% | 12:20 AM | 9:48 AM |
| 8 | Waning Gibbous | 63% | 1:20 AM | 10:34 AM |
| 9 | Last Quarter | 54% | 1:57 AM | 11:40 AM |
| 10 | Last Quarter | 44% | 2:28 AM | 12:34 PM |
| 11 | Waning Crescent | 34% | 3:24 AM | 1:38 PM |
| 12 | Waning Crescent | 25% | 3:40 AM | 2:50 PM |
| 13 | Waning Crescent | 17% | 4:11 AM | 4:05 PM |
| 14 | Waning Crescent | 9% | 4:26 AM | 5:22 PM |
| 15 | Waning Crescent | 4% | 4:48 AM | 6:20 PM |
| 16 | New Moon | 1% | 5:30 AM | 7:35 PM |
| 17 | New Moon | 0% | 5:42 AM | 8:45 PM |
| 18 | Waxing Crescent | 2% | 6:19 AM | 10:11 PM |
| 19 | Waxing Crescent | 7% | 6:43 AM | 11:34 PM |
| 20 | Waxing Crescent | 14% | 7:39 AM | — |
| 21 | Waxing Crescent | 23% | 8:27 AM | 12:30 AM |
| 22 | Waxing Crescent | 34% | 9:45 AM | 1:41 AM |
| 23 | First Quarter | 45% | 11:11 AM | 2:25 AM |
| 24 | First Quarter | 57% | 12:22 PM | 3:22 AM |
| 25 | Waxing Gibbous | 68% | 1:38 PM | 3:38 AM |
| 26 | Waxing Gibbous | 77% | 2:36 PM | 4:11 AM |
| 27 | Waxing Gibbous | 86% | 3:53 PM | 4:24 AM |
| 28 | Waxing Gibbous | 92% | 5:04 PM | 4:43 AM |
| 29 | Waxing Gibbous | 97% | 6:10 PM | 5:25 AM |
| 30 | Full Moon | 99% | 7:13 PM | 5:36 AM |
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Frequently asked questions
When is the full moon in April 2026 in Boulder, Colorado, United States?
The full moon peaks on Wednesday, April 1, 2026, 6:27 PM (local time).
When is the new moon in April 2026?
The new moon falls on Friday, April 17, 2026, 5:45 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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