Sunrise and Sunset times in Roundup, United States 
Today:
 Sunrise: 07:37:54
|
 Sunset: 18:20:08
|
Day Length: 10h 42m 14s
Time zone: America/Denver, UTC -6 h.
Latitude: 46.4485, Longitude: -108.54
Roundup
☁️ Low chance of a spectacular sunset.
Montana, United States 
1 857 people
Current temperature 12 ° C 
Patchy rain nearby
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Oct-01, Wednesday | 07:13:30 | 13:03:38 | 18:53:46 | 11h 40m 16s |
| 2025-Oct-02, Thursday | 07:14:49 | 13:03:19 | 18:51:49 | 11h 37m 0s |
| 2025-Oct-03, Friday | 07:16:08 | 13:03:00 | 18:49:52 | 11h 33m 44s |
| 2025-Oct-04, Saturday | 07:17:28 | 13:02:42 | 18:47:56 | 11h 30m 28s |
| 2025-Oct-05, Sunday | 07:18:47 | 13:02:24 | 18:46:00 | 11h 27m 13s |
| 2025-Oct-06, Monday | 07:20:07 | 13:02:06 | 18:44:05 | 11h 23m 58s |
| 2025-Oct-07, Tuesday | 07:21:28 | 13:01:49 | 18:42:10 | 11h 20m 42s |
| 2025-Oct-08, Wednesday | 07:22:48 | 13:01:32 | 18:40:16 | 11h 17m 28s |
| 2025-Oct-09, Thursday | 07:24:09 | 13:01:16 | 18:38:22 | 11h 14m 13s |
| 2025-Oct-10, Friday | 07:25:30 | 13:01:00 | 18:36:30 | 11h 11m 0s |
| 2025-Oct-11, Saturday | 07:26:52 | 13:00:45 | 18:34:37 | 11h 7m 45s |
| 2025-Oct-12, Sunday | 07:28:14 | 13:00:30 | 18:32:46 | 11h 4m 32s |
| 2025-Oct-13, Monday | 07:29:36 | 13:00:15 | 18:30:55 | 11h 1m 19s |
| 2025-Oct-14, Tuesday | 07:30:58 | 13:00:01 | 18:29:05 | 10h 58m 7s |
| 2025-Oct-15, Wednesday | 07:32:21 | 12:59:48 | 18:27:16 | 10h 54m 55s |
| 2025-Oct-16, Thursday | 07:33:44 | 12:59:35 | 18:25:27 | 10h 51m 43s |
| 2025-Oct-17, Friday | 07:35:07 | 12:59:23 | 18:23:40 | 10h 48m 33s |
| 2025-Oct-18, Saturday | 07:36:31 | 12:59:12 | 18:21:53 | 10h 45m 22s |
| 2025-Oct-19, Sunday | 07:37:54 | 12:59:01 | 18:20:08 | 10h 42m 14s |
| 2025-Oct-20, Monday | 07:39:19 | 12:58:51 | 18:18:23 | 10h 39m 4s |
| 2025-Oct-21, Tuesday | 07:40:43 | 12:58:41 | 18:16:39 | 10h 35m 56s |
| 2025-Oct-22, Wednesday | 07:42:08 | 12:58:32 | 18:14:57 | 10h 32m 49s |
| 2025-Oct-23, Thursday | 07:43:33 | 12:58:24 | 18:13:15 | 10h 29m 42s |
| 2025-Oct-24, Friday | 07:44:58 | 12:58:17 | 18:11:35 | 10h 26m 37s |
| 2025-Oct-25, Saturday | 07:46:24 | 12:58:10 | 18:09:56 | 10h 23m 32s |
| 2025-Oct-26, Sunday | 07:47:49 | 12:58:04 | 18:08:18 | 10h 20m 29s |
| 2025-Oct-27, Monday | 07:49:15 | 12:57:58 | 18:06:41 | 10h 17m 26s |
| 2025-Oct-28, Tuesday | 07:50:41 | 12:57:54 | 18:05:06 | 10h 14m 25s |
| 2025-Oct-29, Wednesday | 07:52:08 | 12:57:50 | 18:03:32 | 10h 11m 24s |
| 2025-Oct-30, Thursday | 07:53:34 | 12:57:47 | 18:01:59 | 10h 8m 25s |
| 2025-Oct-31, Friday | 07:55:01 | 12:57:45 | 18:00:28 | 10h 5m 27s |
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