Sunrise and sunset times in Roundup, MT
Check out today's and tomorrow's sunrise and sunset times in Roundup, as well as the whole calendar for September 2026.
Today
September 16, 2026. Current time: 6:00:32 am
First light at 6:23:41 am
Sunrise time: 6:52:22 am
Sunset time: 7:25:25 pm
Last light at 7:54:07 pm
Sun position chart
Now · Sun altitude: -9.8° (below the horizon) · Azimuth: 76° (E)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 12 hours, 33 minutes
13 hours, 24 minutes left for today's sunset in Roundup
Moon will rise on Sep 16 at 1:25 PM
Moon will set on Sep 16 at 9:34 PMMoon phase: 🌒 Waxing Crescent (28%)🌕 Full moon: Sep 26 at 10:50 AM · 🌑 New moon: Oct 10 at 9:50 AMTomorrow
September 17, 2026
First light at 6:24:59 am
Sunrise time: 6:53:39 am
Sunset time: 7:23:26 pm
Last light at 7:52:05 pm
Day length: 12 hours, 29 minutes
Tomorrow will be 3 minutes shorter than today in Roundup
Moon will rise on Sep 17 at 2:28 PM Moon will set on Sep 17 at 10:14 PMMoon phase: 🌒 Waxing Crescent (44%)
- Roundup, Montana
- Latitude: 46.445244 (North)
- Longitude: -108.541801 (West)
- Time zone: Mountain Time MDT
Shortest day in Roundup, MT
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 8 hours and 38 minutes.Longest day in Roundup, MT
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 15 hours and 52 minutes.
September 2026 - Roundup, Montana - 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 Roundup.
The day length shortens by 1 hour, 34 minutes over the course of September 2026 in Roundup, MT - from 13 hours, 21 minutes on the first day to 11 hours, 47 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 | 6:03:45 am | 6:33:18 am | 7:54:50 pm | 8:24:24 pm | 13h 21m 32s | -3m 10s | 1:14:04 pm | 51.6° | 5:26:10 am | 9:01:58 pm | 4:46:05 am | 9:42:03 pm | 10h 39m 45s | 🌖 (73%) |
| Wed, Sep 2 | 6:05:06 am | 6:34:35 am | 7:52:55 pm | 8:22:24 pm | 13h 18m 20s | -3m 12s | 1:13:45 pm | 51.2° | 5:27:40 am | 8:59:49 pm | 4:47:49 am | 9:39:40 pm | 10h 42m 56s | 🌖 (62%) |
| Thu, Sep 3 | 6:06:26 am | 6:35:51 am | 7:50:59 pm | 8:20:24 pm | 13h 15m 8s | -3m 12s | 1:13:25 pm | 50.9° | 5:29:10 am | 8:57:41 pm | 4:49:33 am | 9:37:17 pm | 10h 46m 8s | 🌖 (51%) |
| Fri, Sep 4 | 6:07:47 am | 6:37:07 am | 7:49:03 pm | 8:18:24 pm | 13h 11m 56s | -3m 12s | 1:13:05 pm | 50.5° | 5:30:39 am | 8:55:32 pm | 4:51:16 am | 9:34:55 pm | 10h 49m 20s | 🌗 (40%) |
| Sat, Sep 5 | 6:09:07 am | 6:38:23 am | 7:47:07 pm | 8:16:23 pm | 13h 8m 44s | -3m 12s | 1:12:45 pm | 50.1° | 5:32:07 am | 8:53:23 pm | 4:52:58 am | 9:32:33 pm | 10h 52m 33s | 🌘 (29%) |
| Sun, Sep 6 | 6:10:27 am | 6:39:40 am | 7:45:10 pm | 8:14:22 pm | 13h 5m 30s | -3m 14s | 1:12:25 pm | 49.8° | 5:33:35 am | 8:51:15 pm | 4:54:39 am | 9:30:11 pm | 10h 55m 46s | 🌘 (19%) |
| Mon, Sep 7 | 6:11:48 am | 6:40:56 am | 7:43:13 pm | 8:12:21 pm | 13h 2m 17s | -3m 13s | 1:12:04 pm | 49.4° | 5:35:03 am | 8:49:06 pm | 4:56:19 am | 9:27:50 pm | 10h 58m 59s | 🌘 (11%) |
| Tue, Sep 8 | 6:13:07 am | 6:42:12 am | 7:41:15 pm | 8:10:20 pm | 12h 59m 3s | -3m 14s | 1:11:44 pm | 49° | 5:36:30 am | 8:46:57 pm | 4:57:58 am | 9:25:29 pm | 11h 2m 13s | 🌘 (5%) |
| Wed, Sep 9 | 6:14:27 am | 6:43:28 am | 7:39:17 pm | 8:08:19 pm | 12h 55m 49s | -3m 14s | 1:11:23 pm | 48.6° | 5:37:57 am | 8:44:49 pm | 4:59:37 am | 9:23:09 pm | 11h 5m 27s | 🌘 (1%) |
| Thu, Sep 10 | 6:15:47 am | 6:44:44 am | 7:37:19 pm | 8:06:17 pm | 12h 52m 35s | -3m 14s | 1:11:02 pm | 48.3° | 5:39:23 am | 8:42:41 pm | 5:01:14 am | 9:20:49 pm | 11h 8m 42s | 🌑 (0.0%) |
| Fri, Sep 11 | 6:17:06 am | 6:46:01 am | 7:35:21 pm | 8:04:15 pm | 12h 49m 20s | -3m 15s | 1:10:41 pm | 47.9° | 5:40:49 am | 8:40:32 pm | 5:02:51 am | 9:18:30 pm | 11h 11m 56s | 🌒 (2%) |
| Sat, Sep 12 | 6:18:25 am | 6:47:17 am | 7:33:22 pm | 8:02:14 pm | 12h 46m 5s | -3m 15s | 1:10:19 pm | 47.5° | 5:42:14 am | 8:38:24 pm | 5:04:27 am | 9:16:12 pm | 11h 15m 11s | 🌒 (5%) |
| Sun, Sep 13 | 6:19:44 am | 6:48:33 am | 7:31:23 pm | 8:00:12 pm | 12h 42m 50s | -3m 15s | 1:09:58 pm | 47.1° | 5:43:40 am | 8:36:17 pm | 5:06:02 am | 9:13:54 pm | 11h 18m 27s | 🌒 (11%) |
| Mon, Sep 14 | 6:21:03 am | 6:49:50 am | 7:29:24 pm | 7:58:10 pm | 12h 39m 34s | -3m 16s | 1:09:37 pm | 46.7° | 5:45:04 am | 8:34:09 pm | 5:07:37 am | 9:11:37 pm | 11h 21m 42s | 🌒 (18%) |
| Tue, Sep 15 | 6:22:22 am | 6:51:06 am | 7:27:25 pm | 7:56:09 pm | 12h 36m 19s | -3m 15s | 1:09:15 pm | 46.3° | 5:46:29 am | 8:32:02 pm | 5:09:11 am | 9:09:20 pm | 11h 24m 57s | 🌒 (26%) |
| Wed, Sep 16 | 6:23:41 am | 6:52:22 am | 7:25:25 pm | 7:54:07 pm | 12h 33m 3s | -3m 16s | 1:08:54 pm | 46° | 5:47:53 am | 8:29:55 pm | 5:10:44 am | 9:07:04 pm | 11h 28m 14s | 🌒 (35%) |
| Thu, Sep 17 | 6:24:59 am | 6:53:39 am | 7:23:26 pm | 7:52:05 pm | 12h 29m 47s | -3m 16s | 1:08:32 pm | 45.6° | 5:49:16 am | 8:27:48 pm | 5:12:16 am | 9:04:49 pm | 11h 31m 30s | 🌒 (44%) |
| Fri, Sep 18 | 6:26:18 am | 6:54:56 am | 7:21:26 pm | 7:50:04 pm | 12h 26m 30s | -3m 17s | 1:08:11 pm | 45.2° | 5:50:40 am | 8:25:42 pm | 5:13:48 am | 9:02:34 pm | 11h 34m 46s | 🌓 (54%) |
| Sat, Sep 19 | 6:27:36 am | 6:56:12 am | 7:19:27 pm | 7:48:03 pm | 12h 23m 15s | -3m 15s | 1:07:50 pm | 44.8° | 5:52:03 am | 8:23:36 pm | 5:15:19 am | 9:00:20 pm | 11h 38m 2s | 🌔 (63%) |
| Sun, Sep 20 | 6:28:55 am | 6:57:29 am | 7:17:27 pm | 7:46:02 pm | 12h 19m 58s | -3m 17s | 1:07:28 pm | 44.4° | 5:53:25 am | 8:21:31 pm | 5:16:50 am | 8:58:07 pm | 11h 41m 19s | 🌔 (72%) |
| Mon, Sep 21 | 6:30:13 am | 6:58:46 am | 7:15:28 pm | 7:44:01 pm | 12h 16m 42s | -3m 16s | 1:07:07 pm | 44° | 5:54:48 am | 8:19:26 pm | 5:18:19 am | 8:55:55 pm | 11h 44m 35s | 🌔 (80%) |
| Tue, Sep 22 | 6:31:32 am | 7:00:03 am | 7:13:29 pm | 7:42:00 pm | 12h 13m 26s | -3m 16s | 1:06:46 pm | 43.6° | 5:56:10 am | 8:17:22 pm | 5:19:49 am | 8:53:43 pm | 11h 47m 51s | 🌔 (87%) |
| Wed, Sep 23 | 6:32:50 am | 7:01:20 am | 7:11:29 pm | 7:40:00 pm | 12h 10m 9s | -3m 17s | 1:06:25 pm | 43.2° | 5:57:32 am | 8:15:18 pm | 5:21:17 am | 8:51:32 pm | 11h 51m 9s | 🌔 (93%) |
| Thu, Sep 24 | 6:34:08 am | 7:02:38 am | 7:09:30 pm | 7:38:00 pm | 12h 6m 52s | -3m 17s | 1:06:04 pm | 42.9° | 5:58:53 am | 8:13:14 pm | 5:22:45 am | 8:49:22 pm | 11h 54m 25s | 🌔 (98%) |
| Fri, Sep 25 | 6:35:26 am | 7:03:55 am | 7:07:31 pm | 7:36:00 pm | 12h 3m 36s | -3m 16s | 1:05:43 pm | 42.5° | 6:00:15 am | 8:11:11 pm | 5:24:13 am | 8:47:13 pm | 11h 57m 42s | 🌔 (99.7%) |
| Sat, Sep 26 | 6:36:45 am | 7:05:13 am | 7:05:32 pm | 7:34:00 pm | 12h 0m 19s | -3m 17s | 1:05:22 pm | 42.1° | 6:01:36 am | 8:09:09 pm | 5:25:40 am | 8:45:05 pm | 12h 0m 59s | 🌕 (99.6%) |
| Sun, Sep 27 | 6:38:03 am | 7:06:31 am | 7:03:34 pm | 7:32:01 pm | 11h 57m 3s | -3m 16s | 1:05:02 pm | 41.7° | 6:02:57 am | 8:07:07 pm | 5:27:06 am | 8:42:58 pm | 12h 4m 15s | 🌖 (97%) |
| Mon, Sep 28 | 6:39:21 am | 7:07:49 am | 7:01:35 pm | 7:30:03 pm | 11h 53m 46s | -3m 17s | 1:04:42 pm | 41.3° | 6:04:18 am | 8:05:06 pm | 5:28:32 am | 8:40:51 pm | 12h 7m 32s | 🌖 (92%) |
| Tue, Sep 29 | 6:40:39 am | 7:09:07 am | 6:59:37 pm | 7:28:05 pm | 11h 50m 30s | -3m 16s | 1:04:22 pm | 40.9° | 6:05:38 am | 8:03:06 pm | 5:29:58 am | 8:38:46 pm | 12h 10m 48s | 🌖 (85%) |
| Wed, Sep 30 | 6:41:58 am | 7:10:25 am | 6:57:39 pm | 7:26:07 pm | 11h 47m 14s | -3m 16s | 1:04:02 pm | 40.5° | 6:06:58 am | 8:01:06 pm | 5:31:23 am | 8:36:42 pm | 12h 14m 5s | 🌖 (75%) |
💡 Got a cool idea? 🤦 Found any errors?
We're always improving this website!
Sunrise and Sunset photos in Roundup, MT
Enjoy this beautiful gallery of images of the sunset and sunrise at Roundup, MT. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Roundup, MT - 2026
The following graph shows sunrise and sunset times in Roundup, MT for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Roundup, MT.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Roundup, MT
In Roundup, MT, the earliest sunrise of 2026 is on June 15 at 5:19 am, while the latest sunrise is on January 1 at 7:55 am. The earliest sunset is on December 10 at 4:28 pm, and the latest sunset is on June 26 at 9:12 pm.
Roundup, MT gets 7h 14m more daylight on the longest day than on the shortest one (15h 52m versus 8h 38m). Averaged over the whole year, a day lasts 12h 17m.
Roundup, MT Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Roundup. 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 Roundup.
Over the year, the 12:00 Sun swings between just 20.1° above the horizon (around Dec 21) and 66.8° (around Jun 21) in Roundup. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma.
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 Roundup, MT
These nearby towns and cities have almost the same sunrise and sunset times as Roundup, MT — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Lavina 22 miBroadview 29 miMelstone 34 miRyegate 36 miHuntley 39 miWinnett 40 miGrass Range 42 miBillings 46 mi