Boulder, CO sky calendar · April 2027
Full moon: Tue, Apr 20. New moon: Tue, Apr 6. Sunrise moves from 6:45 AM to 6:02 AM, sunset from 7:25 PM to 7:54 PM. 2 sky events this month (below). Times are local (MDT).
| Date | Sunrise | Sunset | Moonrise | Moonset | Moon |
|---|---|---|---|---|---|
| Thu, Apr 1 | 6:45 AM | 7:25 PM | 4:12 AM | 2:18 PM | Waning crescent · 26% |
| Fri, Apr 2 | 6:43 AM | 7:26 PM | 4:38 AM | 3:20 PM | Waning crescent · 18% |
| Sat, Apr 3 | 6:41 AM | 7:27 PM | 5:02 AM | 4:22 PM | Waning crescent · 11% |
| Sun, Apr 4 | 6:40 AM | 7:28 PM | 5:24 AM | 5:25 PM | Waning crescent · 5% |
| Mon, Apr 5 | 6:38 AM | 7:29 PM | 5:46 AM | 6:30 PM | Waning crescent · 2% |
| Tue, Apr 6 | 6:37 AM | 7:30 PM | 6:09 AM | 7:37 PM | New moon · 0% |
| Wed, Apr 7 | 6:35 AM | 7:31 PM | 6:34 AM | 8:46 PM | Waxing crescent · 1% |
| Thu, Apr 8 | 6:34 AM | 7:32 PM | 7:04 AM | 9:58 PM | Waxing crescent · 4% |
| Fri, Apr 9 | 6:32 AM | 7:33 PM | 7:40 AM | 11:11 PM | Waxing crescent · 9% |
| Sat, Apr 10 | 6:30 AM | 7:34 PM | 8:24 AM | — | Waxing crescent · 17% |
| Sun, Apr 11 | 6:29 AM | 7:35 PM | 9:20 AM | 12:21 AM | Waxing crescent · 26% |
| Mon, Apr 12 | 6:27 AM | 7:36 PM | 10:25 AM | 1:23 AM | Waxing crescent · 36% |
| Tue, Apr 13 | 6:26 AM | 7:37 PM | 11:37 AM | 2:15 AM | First quarter · 48% |
| Wed, Apr 14 | 6:24 AM | 7:38 PM | 12:52 PM | 2:58 AM | Waxing gibbous · 59% |
| Thu, Apr 15 | 6:23 AM | 7:39 PM | 2:07 PM | 3:32 AM | Waxing gibbous · 70% |
| Fri, Apr 16 | 6:21 AM | 7:40 PM | 3:19 PM | 4:02 AM | Waxing gibbous · 80% |
| Sat, Apr 17 | 6:20 AM | 7:41 PM | 4:30 PM | 4:28 AM | Waxing gibbous · 88% |
| Sun, Apr 18 | 6:18 AM | 7:42 PM | 5:40 PM | 4:52 AM | Waxing gibbous · 94% |
| Mon, Apr 19 | 6:17 AM | 7:43 PM | 6:50 PM | 5:17 AM | Waxing gibbous · 98% |
| Tue, Apr 20 | 6:15 AM | 7:44 PM | 7:59 PM | 5:43 AM | Full moon · 100% |
| Wed, Apr 21 | 6:14 AM | 7:45 PM | 9:08 PM | 6:12 AM | Waning gibbous · 99% |
| Thu, Apr 22 | 6:13 AM | 7:46 PM | 10:15 PM | 6:46 AM | Waning gibbous · 96% |
| Fri, Apr 23 | 6:11 AM | 7:47 PM | 11:17 PM | 7:25 AM | Waning gibbous · 92% |
| Sat, Apr 24 | 6:10 AM | 7:48 PM | — | 8:12 AM | Waning gibbous · 85% |
| Sun, Apr 25 | 6:08 AM | 7:49 PM | 12:12 AM | 9:05 AM | Waning gibbous · 78% |
| Mon, Apr 26 | 6:07 AM | 7:50 PM | 12:59 AM | 10:03 AM | Waning gibbous · 69% |
| Tue, Apr 27 | 6:06 AM | 7:51 PM | 1:38 AM | 11:03 AM | Waning gibbous · 60% |
| Wed, Apr 28 | 6:04 AM | 7:52 PM | 2:11 AM | 12:05 PM | Last quarter · 51% |
| Thu, Apr 29 | 6:03 AM | 7:53 PM | 2:39 AM | 1:07 PM | Waning crescent · 42% |
| Fri, Apr 30 | 6:02 AM | 7:54 PM | 3:03 AM | 2:08 PM | Waning crescent · 32% |
Sky events this month
- Tue, Apr 20 4:27 PMFull moon
- Wed, Apr 21Lyrids meteor shower peakUp to about 18 meteors an hour under a perfectly dark sky · bright moonlight hides fainter meteors
Month by month
Calculated with Astronomy Engine (MIT license).