Sunrise and sunset times in Boulder, UT
Check out today's and tomorrow's sunrise and sunset times in Boulder, as well as the whole calendar for September 2026.
Today
September 16, 2026. Current time: 7:36:28 am
First light at 6:42:22 am
Sunrise time: 7:07:21 am
Sunset time: 7:33:30 pm
Last light at 7:58:30 pm
Sun position chart
Now · Sun altitude: 4.7° · Azimuth: 90° (E)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 12 hours, 26 minutes
11 hours, 57 minutes left for today's sunset in Boulder
Moon will rise on Sep 16 at 1:02 PM
Moon will set on Sep 16 at 10:21 PMMoon phase: 🌒 Waxing Crescent (29%)🌕 Full moon: Sep 26 at 10:50 AM · 🌑 New moon: Oct 10 at 9:50 AMTomorrow
September 17, 2026
First light at 6:43:14 am
Sunrise time: 7:08:13 am
Sunset time: 7:31:56 pm
Last light at 7:56:55 pm
Day length: 12 hours, 23 minutes
Tomorrow will be 2 minutes shorter than today in Boulder
Moon will rise on Sep 17 at 2:02 PM Moon will set on Sep 17 at 11:06 PMMoon phase: 🌒 Waxing Crescent (44%)
- Boulder, Utah
- Latitude: 37.924442 (North)
- Longitude: -111.426109 (West)
- Time zone: Mountain Time MDT
Shortest day in Boulder, UT
The shortest day of the year will be in around 3 months, during the winter solstice on December 21, 2026, with a daylight length of 9 hours and 34 minutes.Longest day in Boulder, UT
The longest day of the year was 2 months and 25 days ago, during the summer solstice on June 21, 2026, with a daylight length of 14 hours and 50 minutes.
September 2026 - Boulder, Utah - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of September in Boulder.
The day length shortens by 1 hour, 9 minutes over the course of September 2026 in Boulder, UT - from 13 hours, 1 minute on the first day to 11 hours, 52 minutes on the last day.
| Day | First Light | Sunrise | Sunset | Last Light | Day Length | Day Length Variation | Solar Noon
Time of day when the sun reaches its highest point in the sky.
|
Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tue, Sep 1 | 6:29:06 am | 6:54:38 am | 7:56:35 pm | 8:22:06 pm | 13h 1m 57s | -2m 21s | 1:25:36 pm | 60.1° | 5:57:09 am | 8:54:03 pm | 5:24:03 am | 9:27:10 pm | 10h 58m 54s | 🌖 (73%) |
| Wed, Sep 2 | 6:30:00 am | 6:55:29 am | 7:55:05 pm | 8:20:34 pm | 12h 59m 36s | -2m 21s | 1:25:17 pm | 59.8° | 5:58:08 am | 8:52:25 pm | 5:25:09 am | 9:25:24 pm | 11h 1m 15s | 🌖 (62%) |
| Thu, Sep 3 | 6:30:54 am | 6:56:20 am | 7:53:35 pm | 8:19:01 pm | 12h 57m 15s | -2m 21s | 1:24:57 pm | 59.4° | 5:59:07 am | 8:50:47 pm | 5:26:16 am | 9:23:39 pm | 11h 3m 36s | 🌖 (51%) |
| Fri, Sep 4 | 6:31:47 am | 6:57:11 am | 7:52:04 pm | 8:17:27 pm | 12h 54m 53s | -2m 22s | 1:24:37 pm | 59° | 6:00:06 am | 8:49:09 pm | 5:27:21 am | 9:21:53 pm | 11h 5m 58s | 🌗 (40%) |
| Sat, Sep 5 | 6:32:41 am | 6:58:02 am | 7:50:33 pm | 8:15:54 pm | 12h 52m 31s | -2m 22s | 1:24:17 pm | 58.7° | 6:01:04 am | 8:47:31 pm | 5:28:26 am | 9:20:08 pm | 11h 8m 20s | 🌘 (29%) |
| Sun, Sep 6 | 6:33:34 am | 6:58:53 am | 7:49:01 pm | 8:14:20 pm | 12h 50m 8s | -2m 23s | 1:23:57 pm | 58.3° | 6:02:02 am | 8:45:52 pm | 5:29:31 am | 9:18:23 pm | 11h 10m 42s | 🌘 (19%) |
| Mon, Sep 7 | 6:34:28 am | 6:59:43 am | 7:47:29 pm | 8:12:45 pm | 12h 47m 46s | -2m 22s | 1:23:36 pm | 57.9° | 6:02:59 am | 8:44:13 pm | 5:30:35 am | 9:16:37 pm | 11h 13m 5s | 🌘 (11%) |
| Tue, Sep 8 | 6:35:21 am | 7:00:34 am | 7:45:57 pm | 8:11:11 pm | 12h 45m 23s | -2m 23s | 1:23:16 pm | 57.5° | 6:03:57 am | 8:42:35 pm | 5:31:39 am | 9:14:52 pm | 11h 15m 28s | 🌘 (5%) |
| Wed, Sep 9 | 6:36:14 am | 7:01:25 am | 7:44:25 pm | 8:09:36 pm | 12h 43m 0s | -2m 23s | 1:22:55 pm | 57.2° | 6:04:54 am | 8:40:56 pm | 5:32:42 am | 9:13:07 pm | 11h 17m 51s | 🌘 (1%) |
| Thu, Sep 10 | 6:37:07 am | 7:02:16 am | 7:42:52 pm | 8:08:01 pm | 12h 40m 36s | -2m 24s | 1:22:34 pm | 56.8° | 6:05:51 am | 8:39:17 pm | 5:33:45 am | 9:11:23 pm | 11h 20m 15s | 🌑 (0.0%) |
| Fri, Sep 11 | 6:37:59 am | 7:03:07 am | 7:41:19 pm | 8:06:26 pm | 12h 38m 12s | -2m 24s | 1:22:13 pm | 56.4° | 6:06:47 am | 8:37:38 pm | 5:34:48 am | 9:09:38 pm | 11h 22m 39s | 🌒 (2%) |
| Sat, Sep 12 | 6:38:52 am | 7:03:58 am | 7:39:45 pm | 8:04:51 pm | 12h 35m 47s | -2m 25s | 1:21:52 pm | 56° | 6:07:44 am | 8:35:59 pm | 5:35:49 am | 9:07:54 pm | 11h 25m 4s | 🌒 (5%) |
| Sun, Sep 13 | 6:39:45 am | 7:04:49 am | 7:38:12 pm | 8:03:16 pm | 12h 33m 23s | -2m 24s | 1:21:30 pm | 55.6° | 6:08:40 am | 8:34:21 pm | 5:36:51 am | 9:06:09 pm | 11h 27m 27s | 🌒 (11%) |
| Mon, Sep 14 | 6:40:37 am | 7:05:39 am | 7:36:38 pm | 8:01:40 pm | 12h 30m 59s | -2m 24s | 1:21:09 pm | 55.2° | 6:09:35 am | 8:32:42 pm | 5:37:52 am | 9:04:26 pm | 11h 29m 52s | 🌒 (18%) |
| Tue, Sep 15 | 6:41:30 am | 7:06:30 am | 7:35:04 pm | 8:00:05 pm | 12h 28m 34s | -2m 25s | 1:20:47 pm | 54.9° | 6:10:31 am | 8:31:04 pm | 5:38:53 am | 9:02:42 pm | 11h 32m 17s | 🌒 (26%) |
| Wed, Sep 16 | 6:42:22 am | 7:07:21 am | 7:33:30 pm | 7:58:30 pm | 12h 26m 9s | -2m 25s | 1:20:26 pm | 54.5° | 6:11:27 am | 8:29:25 pm | 5:39:53 am | 9:00:59 pm | 11h 34m 43s | 🌒 (35%) |
| Thu, Sep 17 | 6:43:14 am | 7:08:13 am | 7:31:56 pm | 7:56:55 pm | 12h 23m 43s | -2m 26s | 1:20:05 pm | 54.1° | 6:12:22 am | 8:27:47 pm | 5:40:53 am | 8:59:16 pm | 11h 37m 8s | 🌒 (44%) |
| Fri, Sep 18 | 6:44:07 am | 7:09:04 am | 7:30:22 pm | 7:55:19 pm | 12h 21m 18s | -2m 25s | 1:19:43 pm | 53.7° | 6:13:17 am | 8:26:09 pm | 5:41:53 am | 8:57:34 pm | 11h 39m 33s | 🌓 (54%) |
| Sat, Sep 19 | 6:44:59 am | 7:09:55 am | 7:28:48 pm | 7:53:44 pm | 12h 18m 53s | -2m 25s | 1:19:22 pm | 53.3° | 6:14:12 am | 8:24:32 pm | 5:42:52 am | 8:55:52 pm | 11h 41m 58s | 🌔 (63%) |
| Sun, Sep 20 | 6:45:51 am | 7:10:46 am | 7:27:14 pm | 7:52:09 pm | 12h 16m 28s | -2m 25s | 1:19:00 pm | 52.9° | 6:15:06 am | 8:22:54 pm | 5:43:51 am | 8:54:10 pm | 11h 44m 24s | 🌔 (72%) |
| Mon, Sep 21 | 6:46:44 am | 7:11:38 am | 7:25:40 pm | 7:50:34 pm | 12h 14m 2s | -2m 26s | 1:18:39 pm | 52.5° | 6:16:01 am | 8:21:17 pm | 5:44:49 am | 8:52:29 pm | 11h 46m 49s | 🌔 (80%) |
| Tue, Sep 22 | 6:47:36 am | 7:12:29 am | 7:24:06 pm | 7:49:00 pm | 12h 11m 37s | -2m 25s | 1:18:18 pm | 52.2° | 6:16:55 am | 8:19:40 pm | 5:45:47 am | 8:50:48 pm | 11h 49m 15s | 🌔 (87%) |
| Wed, Sep 23 | 6:48:28 am | 7:13:21 am | 7:22:33 pm | 7:47:25 pm | 12h 9m 12s | -2m 25s | 1:17:57 pm | 51.8° | 6:17:50 am | 8:18:04 pm | 5:46:45 am | 8:49:08 pm | 11h 51m 40s | 🌔 (93%) |
| Thu, Sep 24 | 6:49:21 am | 7:14:13 am | 7:20:59 pm | 7:45:51 pm | 12h 6m 46s | -2m 26s | 1:17:36 pm | 51.4° | 6:18:44 am | 8:16:28 pm | 5:47:43 am | 8:47:29 pm | 11h 54m 6s | 🌔 (98%) |
| Fri, Sep 25 | 6:50:13 am | 7:15:05 am | 7:19:25 pm | 7:44:17 pm | 12h 4m 20s | -2m 26s | 1:17:15 pm | 51° | 6:19:38 am | 8:14:52 pm | 5:48:40 am | 8:45:50 pm | 11h 56m 32s | 🌔 (99.7%) |
| Sat, Sep 26 | 6:51:06 am | 7:15:57 am | 7:17:52 pm | 7:42:43 pm | 12h 1m 55s | -2m 25s | 1:16:55 pm | 50.6° | 6:20:32 am | 8:13:17 pm | 5:49:37 am | 8:44:12 pm | 11h 58m 57s | 🌕 (99.6%) |
| Sun, Sep 27 | 6:51:58 am | 7:16:49 am | 7:16:19 pm | 7:41:10 pm | 11h 59m 30s | -2m 25s | 1:16:34 pm | 50.2° | 6:21:26 am | 8:11:42 pm | 5:50:34 am | 8:42:34 pm | 12h 1m 23s | 🌖 (97%) |
| Mon, Sep 28 | 6:52:51 am | 7:17:42 am | 7:14:46 pm | 7:39:37 pm | 11h 57m 4s | -2m 26s | 1:16:14 pm | 49.8° | 6:22:20 am | 8:10:08 pm | 5:51:31 am | 8:40:57 pm | 12h 3m 49s | 🌖 (92%) |
| Tue, Sep 29 | 6:53:43 am | 7:18:35 am | 7:13:13 pm | 7:38:05 pm | 11h 54m 38s | -2m 26s | 1:15:54 pm | 49.4° | 6:23:14 am | 8:08:34 pm | 5:52:27 am | 8:39:21 pm | 12h 6m 15s | 🌖 (85%) |
| Wed, Sep 30 | 6:54:36 am | 7:19:28 am | 7:11:41 pm | 7:36:32 pm | 11h 52m 13s | -2m 25s | 1:15:34 pm | 49° | 6:24:07 am | 8:07:01 pm | 5:53:23 am | 8:37:45 pm | 12h 8m 40s | 🌖 (75%) |
💡 Got a cool idea? 🤦 Found any errors?
We're always improving this website!
Sunrise and Sunset photos in Boulder, UT
Enjoy this beautiful gallery of images of the sunset and sunrise at Boulder, UT. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Boulder, UT - 2026
The following graph shows sunrise and sunset times in Boulder, UT for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Boulder, UT.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Boulder, UT
In Boulder, UT, the earliest sunrise of 2026 is on June 13 at 6:01 am, while the latest sunrise is on October 31 at 7:49 am. The earliest sunset is on December 6 at 5:07 pm, and the latest sunset is on June 28 at 8:53 pm.
Boulder, UT gets 5h 15m more daylight on the longest day than on the shortest one (14h 50m versus 9h 34m). Averaged over the whole year, a day lasts 12h 14m.
Boulder, UT Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Boulder. Throughout the year, it slowly traces this figure-eight:
Move along the curve to read the Sun's altitude and azimuth for any day of the year in Boulder.
Over the year, the 12:00 Sun swings between just 28.4° above the horizon (around Dec 21) and 74.4° (around Jun 18) in Boulder. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma. Notice the whole figure leans east of the meridian: over Boulder the Sun reaches its highest point between 12:09 and 12:39 depending on the time of year, but never at 12:00.
Detailed Analemma Chart
The technical chart below plots one dot per day, labels the first day of each month, marks the solstices, equinoxes, perihelion and aphelion, and draws the noon altitude of the equinoxes (90° minus your latitude) together with its ±23.4° seasonal limits.
Why does the figure look wider here than in the sky view above?
Both draw the same data, but with different conventions. The sky view uses the same scale on both axes, so it shows the analemma with its true proportions, as a camera would capture it: about 47° tall and only a few degrees wide. This chart, like most technical analemma diagrams, stretches each axis independently to fill the plot, expanding the narrow azimuth range several times so its day-to-day variation can actually be read. Also, azimuth is not sky distance: near the zenith, one degree of azimuth spans much less than one degree across the sky, which further widens the figure in this representation.
Places near Boulder, UT
These nearby towns and cities have almost the same sunrise and sunset times as Boulder, UT — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Escalante 14 miCapitol Reef National Park 19 miTeasdale 25 miTorrey 26 miBicknell 29 miLyman 34 miAntimony 34 miLoa 35 mi