Sunrise and Sunset times in Roundup, United States 
Today:
 Sunrise: 07:49:33
|
 Sunset: 17:00:57
|
Day Length: 9h 11m 24s
Time zone: America/Denver, UTC -7 h.
Latitude: 46.4485, Longitude: -108.54
Roundup
Montana, United States 
1 857 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2026-Jan-01, Thursday | 07:57:40 | 12:17:52 | 16:38:03 | 8h 40m 23s |
| 2026-Jan-02, Friday | 07:57:39 | 12:18:20 | 16:39:01 | 8h 41m 22s |
| 2026-Jan-03, Saturday | 07:57:34 | 12:18:47 | 16:40:00 | 8h 42m 26s |
| 2026-Jan-04, Sunday | 07:57:27 | 12:19:14 | 16:41:02 | 8h 43m 35s |
| 2026-Jan-05, Monday | 07:57:17 | 12:19:41 | 16:42:05 | 8h 44m 48s |
| 2026-Jan-06, Tuesday | 07:57:05 | 12:20:08 | 16:43:10 | 8h 46m 5s |
| 2026-Jan-07, Wednesday | 07:56:50 | 12:20:33 | 16:44:17 | 8h 47m 27s |
| 2026-Jan-08, Thursday | 07:56:32 | 12:20:59 | 16:45:26 | 8h 48m 54s |
| 2026-Jan-09, Friday | 07:56:11 | 12:21:24 | 16:46:36 | 8h 50m 25s |
| 2026-Jan-10, Saturday | 07:55:48 | 12:21:48 | 16:47:48 | 8h 52m 0s |
| 2026-Jan-11, Sunday | 07:55:22 | 12:22:11 | 16:49:01 | 8h 53m 39s |
| 2026-Jan-12, Monday | 07:54:53 | 12:22:34 | 16:50:16 | 8h 55m 23s |
| 2026-Jan-13, Tuesday | 07:54:22 | 12:22:57 | 16:51:32 | 8h 57m 10s |
| 2026-Jan-14, Wednesday | 07:53:48 | 12:23:19 | 16:52:50 | 8h 59m 2s |
| 2026-Jan-15, Thursday | 07:53:12 | 12:23:40 | 16:54:08 | 9h 0m 56s |
| 2026-Jan-16, Friday | 07:52:33 | 12:24:00 | 16:55:28 | 9h 2m 55s |
| 2026-Jan-17, Saturday | 07:51:51 | 12:24:20 | 16:56:49 | 9h 4m 58s |
| 2026-Jan-18, Sunday | 07:51:08 | 12:24:39 | 16:58:11 | 9h 7m 3s |
| 2026-Jan-19, Monday | 07:50:21 | 12:24:57 | 16:59:34 | 9h 9m 13s |
| 2026-Jan-20, Tuesday | 07:49:33 | 12:25:15 | 17:00:57 | 9h 11m 24s |
| 2026-Jan-21, Wednesday | 07:48:42 | 12:25:32 | 17:02:22 | 9h 13m 40s |
| 2026-Jan-22, Thursday | 07:47:49 | 12:25:48 | 17:03:47 | 9h 15m 58s |
| 2026-Jan-23, Friday | 07:46:53 | 12:26:03 | 17:05:13 | 9h 18m 20s |
| 2026-Jan-24, Saturday | 07:45:55 | 12:26:18 | 17:06:40 | 9h 20m 45s |
| 2026-Jan-25, Sunday | 07:44:55 | 12:26:31 | 17:08:07 | 9h 23m 12s |
| 2026-Jan-26, Monday | 07:43:53 | 12:26:44 | 17:09:35 | 9h 25m 42s |
| 2026-Jan-27, Tuesday | 07:42:49 | 12:26:56 | 17:11:04 | 9h 28m 15s |
| 2026-Jan-28, Wednesday | 07:41:43 | 12:27:08 | 17:12:32 | 9h 30m 49s |
| 2026-Jan-29, Thursday | 07:40:35 | 12:27:18 | 17:14:01 | 9h 33m 26s |
| 2026-Jan-30, Friday | 07:39:25 | 12:27:28 | 17:15:31 | 9h 36m 6s |
| 2026-Jan-31, Saturday | 07:38:13 | 12:27:37 | 17:17:01 | 9h 38m 48s |
Day length in Roundup during the year on the chart:
Roundup on United States map:
Locations in the same time zone America/Denver
Denver (Colorado), Salt Lake City (Utah), El Paso (Texas), Albuquerque (New Mexico), Colorado Springs (Colorado), Ogden (Utah), Provo (Utah), Aurora (Colorado), Fort Collins (Colorado), Lakewood (Colorado), Pueblo (Colorado), Thornton (Colorado), Grand Junction (Colorado), West Valley City (Utah), Las Cruces (New Mexico), Greeley (Colorado), Boulder (Colorado), Billings (Montana), Arvada (Colorado), St. George (Utah), West Jordan (Utah), Westminster (Colorado), Centennial (Colorado), Santa Fe (New Mexico), Highlands Ranch (Colorado), Logan (Utah), Longmont (Colorado), Orem (Utah), Rio Rancho (New Mexico), Sandy (Utah)
Largest populated areas in United States
New York (New York), Los Angeles (California), Chicago (Illinois), Miami (Florida), Dallas (Texas), Philadelphia (Pennsylvania), Houston (Texas), Washington (District of Columbia), Atlanta (Georgia), Boston (Massachusetts), Phoenix (Arizona), Seattle (Washington), San Francisco (California), Detroit (Michigan), San Diego (California), Minneapolis (Minnesota), Tampa (Florida), Denver (Colorado), Brooklyn (New York), Queens (New York), Baltimore (Maryland), Riverside (California), St. Louis (Missouri), Las Vegas (Nevada), Portland (Oregon), San Antonio (Texas), Sacramento (California), San Jose (California), Orlando (Florida), Cleveland (Ohio)
Countries closest to United States
*Calculation of distances from capital to capital
Daylight Hours FAQ: 10 Most Googled Questions Answered
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks