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Sunrise and sunset times in Boulder, United States

Current local time: 4:24:54 AM (UTC-6)

Sun Direction: 55°15'28"
Sun Altitude: -21°53'56"
Distance to earth: 151,109,589 km
Sunrise Today: 6:25:38 AM, 76°51'13"
Sunset Today: 7:38:41 PM, 282°59'37"

000204060810121416182022
Night:
00:00 - 4:49:12 AM

9:15:06 PM - 00:00

Total: 7:34:06
Astronomical Twilight:
4:49:12 AM - 5:24:15 AM

8:40:03 PM - 9:15:06 PM

Total: 1:10:06
Nautical Twilight:
5:24:15 AM - 5:57:43 AM

8:06:35 PM - 8:40:03 PM

Total: 1:06:56
Civil Twilight:
5:57:43 AM - 6:25:38 AM

7:38:41 PM - 8:06:35 PM

Total: 0:55:49
Daylight:

6:25:38 AM - 7:38:41 PM

Total: 13:13:03

  • Today, August 28

    • Sunrise
      6:25:38 AM
    • Sunset
      7:38:41 PM
    Day length 13 hours, 13 minutes -2 m 29 sec

  • Tomorrow, August 29

    • Sunrise
      6:26:34 AM
    • Sunset
      7:37:08 PM
    Day length 13 hours, 10 minutes -2 m 29 sec

August 2025 — Sun in Boulder

DateSunDay lengthAstronomical TwilightNautical TwilightCivil Twilight
2025SunriseSunsetSolar NoonLenthDifferenceStartEndStartEndStartEnd
August 1 Fri6:00 AM8:14 PM1:07 PM14:14:44-2:004:11 AM10:02 PM4:52 AM9:22 PM5:29 AM8:44 PM
August 2 Sat6:00 AM8:13 PM1:07 PM14:12:44-2:004:13 AM10:01 PM4:53 AM9:20 PM5:30 AM8:43 PM
August 3 Sun6:01 AM8:12 PM1:07 PM14:10:41-2:034:14 AM9:59 PM4:55 AM9:19 PM5:31 AM8:42 PM
August 4 Mon6:02 AM8:11 PM1:07 PM14:08:38-2:034:16 AM9:58 PM4:56 AM9:18 PM5:32 AM8:41 PM
August 5 Tue6:03 AM8:10 PM1:07 PM14:06:33-2:054:17 AM9:56 PM4:57 AM9:16 PM5:33 AM8:40 PM
August 6 Wed6:04 AM8:09 PM1:06 PM14:04:26-2:074:19 AM9:54 PM4:58 AM9:15 PM5:35 AM8:38 PM
August 7 Thu6:05 AM8:07 PM1:06 PM14:02:18-2:084:20 AM9:53 PM4:59 AM9:13 PM5:36 AM8:37 PM
August 8 Fri6:06 AM8:06 PM1:06 PM14:00:08-2:104:21 AM9:51 PM5:01 AM9:12 PM5:37 AM8:36 PM
August 9 Sat6:07 AM8:05 PM1:06 PM13:57:57-2:114:23 AM9:49 PM5:02 AM9:10 PM5:38 AM8:34 PM
August 10 Sun6:08 AM8:04 PM1:06 PM13:55:44-2:134:24 AM9:47 PM5:03 AM9:09 PM5:39 AM8:33 PM
August 11 Mon6:09 AM8:02 PM1:06 PM13:53:31-2:134:26 AM9:46 PM5:04 AM9:07 PM5:40 AM8:32 PM
August 12 Tue6:10 AM8:01 PM1:06 PM13:51:15-2:164:27 AM9:44 PM5:05 AM9:06 PM5:41 AM8:30 PM
August 13 Wed6:11 AM8:00 PM1:05 PM13:48:59-2:164:29 AM9:42 PM5:06 AM9:04 PM5:42 AM8:29 PM
August 14 Thu6:12 AM7:59 PM1:05 PM13:46:42-2:174:30 AM9:40 PM5:08 AM9:03 PM5:43 AM8:27 PM
August 15 Fri6:13 AM7:57 PM1:05 PM13:44:24-2:184:31 AM9:39 PM5:09 AM9:01 PM5:44 AM8:26 PM
August 16 Sat6:14 AM7:56 PM1:05 PM13:42:05-2:194:33 AM9:37 PM5:10 AM9:00 PM5:45 AM8:25 PM
August 17 Sun6:15 AM7:54 PM1:05 PM13:39:43-2:224:34 AM9:35 PM5:11 AM8:58 PM5:46 AM8:23 PM
August 18 Mon6:16 AM7:53 PM1:04 PM13:37:22-2:214:35 AM9:33 PM5:12 AM8:56 PM5:47 AM8:22 PM
August 19 Tue6:17 AM7:52 PM1:04 PM13:35:00-2:224:37 AM9:31 PM5:13 AM8:55 PM5:48 AM8:20 PM
August 20 Wed6:18 AM7:50 PM1:04 PM13:32:37-2:234:38 AM9:30 PM5:15 AM8:53 PM5:49 AM8:19 PM
August 21 Thu6:18 AM7:49 PM1:04 PM13:30:13-2:244:40 AM9:28 PM5:16 AM8:51 PM5:50 AM8:17 PM
August 22 Fri6:19 AM7:47 PM1:03 PM13:27:48-2:254:41 AM9:26 PM5:17 AM8:50 PM5:51 AM8:16 PM
August 23 Sat6:20 AM7:46 PM1:03 PM13:25:22-2:264:42 AM9:24 PM5:18 AM8:48 PM5:52 AM8:14 PM
August 24 Sun6:21 AM7:44 PM1:03 PM13:22:56-2:264:44 AM9:22 PM5:19 AM8:46 PM5:53 AM8:12 PM
August 25 Mon6:22 AM7:43 PM1:03 PM13:20:29-2:274:45 AM9:20 PM5:20 AM8:45 PM5:54 AM8:11 PM
August 26 Tue6:23 AM7:41 PM1:02 PM13:18:01-2:284:46 AM9:18 PM5:22 AM8:43 PM5:55 AM8:09 PM
August 27 Wed6:24 AM7:40 PM1:02 PM13:15:32-2:294:47 AM9:16 PM5:23 AM8:41 PM5:56 AM8:08 PM
August 28 Thu6:25 AM7:38 PM1:02 PM13:13:03-2:294:49 AM9:15 PM5:24 AM8:40 PM5:57 AM8:06 PM
August 29 Fri6:26 AM7:37 PM1:01 PM13:10:34-2:294:50 AM9:13 PM5:25 AM8:38 PM5:58 AM8:04 PM
August 30 Sat6:27 AM7:35 PM1:01 PM13:08:03-2:314:51 AM9:11 PM5:26 AM8:36 PM5:59 AM8:03 PM
August 31 Sun6:28 AM7:34 PM1:01 PM13:05:32-2:314:53 AM9:09 PM5:27 AM8:34 PM6:00 AM8:01 PM
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Current sun position
Rise
6:25:38 AM
76°51'13"
Meridian
1:02:09 PM
180°
Set
7:38:41 PM
282°59'37"