Sunrise and sunset in Boulder

Boulder Sunrise, Sunset and Moon in April 2026

Local time (MDT)

Day length goes from 12 h 41 min on April 1 to 13 h 53 min on April 30. Sunrise moves from 6:45 AM to 6:02 AM and sunset from 7:26 PM to 7:55 PM.

Every day

Dawn and dusk are civil twilight (the sun 6 degrees below the horizon); golden hour starts when the evening sun is 6 degrees up; full dark is astronomical twilight, 18 degrees down. A blank moonrise or moonset means it falls on the next day.

DateDawnSunriseSunsetDuskGolden hourFull darkDay lengthChangeMoonMoonriseMoonset
Apr 16:18 AM6:45 AM7:26 PM7:53 PM6:50 PM8:59 PM12 h 41 minFull moon 8:12 PM7:24 PM6:22 AM
Apr 26:16 AM6:43 AM7:27 PM7:54 PM6:51 PM9:00 PM12 h 44 min+3.0 minFull moon, 100%8:28 PM6:43 AM
Apr 36:14 AM6:42 AM7:28 PM7:55 PM6:52 PM9:01 PM12 h 46 min+2.0 minWaning gibbous, 98%9:32 PM7:07 AM
Apr 46:13 AM6:40 AM7:29 PM7:56 PM6:53 PM9:02 PM12 h 49 min+3.0 minWaning gibbous, 94%10:36 PM7:33 AM
Apr 56:11 AM6:38 AM7:30 PM7:57 PM6:54 PM9:04 PM12 h 52 min+3.0 minWaning gibbous, 88%11:39 PM8:03 AM
Apr 66:09 AM6:37 AM7:31 PM7:58 PM6:55 PM9:05 PM12 h 54 min+2.0 minWaning gibbous, 80%8:40 AM
Apr 76:08 AM6:35 AM7:32 PM7:59 PM6:56 PM9:06 PM12 h 57 min+3.0 minWaning gibbous, 71%12:38 AM9:23 AM
Apr 86:06 AM6:34 AM7:33 PM8:00 PM6:57 PM9:08 PM12 h 59 min+2.0 minWaning gibbous, 61%1:33 AM10:15 AM
Apr 96:04 AM6:32 AM7:34 PM8:01 PM6:58 PM9:09 PM13 h 02 min+3.0 minLast quarter 10:52 PM2:20 AM11:13 AM
Apr 106:03 AM6:31 AM7:35 PM8:02 PM6:59 PM9:10 PM13 h 04 min+2.0 minWaning crescent, 40%3:00 AM12:15 PM
Apr 116:01 AM6:29 AM7:36 PM8:04 PM7:00 PM9:12 PM13 h 07 min+3.0 minWaning crescent, 30%3:34 AM1:21 PM
Apr 126:00 AM6:28 AM7:37 PM8:05 PM7:00 PM9:13 PM13 h 09 min+2.0 minWaning crescent, 21%4:03 AM2:28 PM
Apr 135:58 AM6:26 AM7:38 PM8:06 PM7:01 PM9:14 PM13 h 12 min+3.0 minWaning crescent, 13%4:28 AM3:36 PM
Apr 145:57 AM6:25 AM7:39 PM8:07 PM7:02 PM9:16 PM13 h 14 min+2.0 minWaning crescent, 7%4:52 AM4:45 PM
Apr 155:55 AM6:23 AM7:40 PM8:08 PM7:03 PM9:17 PM13 h 17 min+3.0 minWaning crescent, 2%5:15 AM5:57 PM
Apr 165:53 AM6:22 AM7:41 PM8:09 PM7:04 PM9:18 PM13 h 19 min+2.0 minNew moon, 0%5:39 AM7:11 PM
Apr 175:52 AM6:20 AM7:42 PM8:10 PM7:05 PM9:20 PM13 h 22 min+3.0 minNew moon 5:53 AM6:07 AM8:29 PM
Apr 185:50 AM6:19 AM7:43 PM8:11 PM7:06 PM9:21 PM13 h 24 min+2.0 minWaxing crescent, 3%6:39 AM9:49 PM
Apr 195:49 AM6:17 AM7:44 PM8:12 PM7:07 PM9:23 PM13 h 27 min+3.0 minWaxing crescent, 7%7:20 AM11:08 PM
Apr 205:47 AM6:16 AM7:45 PM8:13 PM7:08 PM9:24 PM13 h 29 min+2.0 minWaxing crescent, 14%8:10 AM
Apr 215:46 AM6:14 AM7:46 PM8:14 PM7:09 PM9:25 PM13 h 32 min+3.0 minWaxing crescent, 22%9:11 AM12:21 AM
Apr 225:44 AM6:13 AM7:47 PM8:16 PM7:10 PM9:27 PM13 h 34 min+2.0 minWaxing crescent, 31%10:22 AM1:22 AM
Apr 235:43 AM6:11 AM7:48 PM8:17 PM7:11 PM9:28 PM13 h 37 min+3.0 minFirst quarter 8:32 PM11:36 AM2:10 AM
Apr 245:41 AM6:10 AM7:49 PM8:18 PM7:12 PM9:30 PM13 h 39 min+2.0 minFirst quarter, 52%12:49 PM2:48 AM
Apr 255:40 AM6:09 AM7:50 PM8:19 PM7:13 PM9:31 PM13 h 41 min+2.0 minWaxing gibbous, 62%2:00 PM3:18 AM
Apr 265:38 AM6:07 AM7:51 PM8:20 PM7:14 PM9:33 PM13 h 44 min+3.0 minWaxing gibbous, 72%3:07 PM3:44 AM
Apr 275:37 AM6:06 AM7:52 PM8:21 PM7:15 PM9:34 PM13 h 46 min+2.0 minWaxing gibbous, 81%4:12 PM4:06 AM
Apr 285:36 AM6:05 AM7:53 PM8:22 PM7:16 PM9:36 PM13 h 48 min+2.0 minWaxing gibbous, 89%5:15 PM4:27 AM
Apr 295:34 AM6:03 AM7:54 PM8:23 PM7:17 PM9:37 PM13 h 51 min+3.0 minWaxing gibbous, 95%6:18 PM4:48 AM
Apr 305:33 AM6:02 AM7:55 PM8:24 PM7:18 PM9:39 PM13 h 53 min+2.0 minWaxing gibbous, 98%7:21 PM5:11 AM

Other months

More

Sources

Computed with the NOAA solar position equations and the lunar methods of Meeus, Astronomical Algorithms, for a flat horizon; hills and buildings delay a real sunrise.