Sunrise and Sunset times in Longmont, United States 
Longmont
☁️ Low chance of a spectacular sunset.
Colorado, United States
99 398 people
Current temperature 13 ° C 
Patchy rain nearby
Today:
 Sunrise: 06:30:27
|
 Sunset: 19:28:42
|
Day Length: 12h 58m 15s
Time zone: America/Denver, UTC -6 h.
Latitude: 40.169, Longitude: -105.1
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Sep-01, Monday | 06:28:33 | 13:00:13 | 19:31:54 | 13h 3m 21s |
| 2025-Sep-02, Tuesday | 06:29:30 | 12:59:54 | 19:30:18 | 13h 0m 48s |
| 2025-Sep-03, Wednesday | 06:30:27 | 12:59:34 | 19:28:42 | 12h 58m 15s |
| 2025-Sep-04, Thursday | 06:31:24 | 12:59:15 | 19:27:05 | 12h 55m 41s |
| 2025-Sep-05, Friday | 06:32:21 | 12:58:54 | 19:25:28 | 12h 53m 7s |
| 2025-Sep-06, Saturday | 06:33:18 | 12:58:34 | 19:23:50 | 12h 50m 32s |
| 2025-Sep-07, Sunday | 06:34:14 | 12:58:13 | 19:22:12 | 12h 47m 58s |
| 2025-Sep-08, Monday | 06:35:11 | 12:57:53 | 19:20:34 | 12h 45m 23s |
| 2025-Sep-09, Tuesday | 06:36:08 | 12:57:32 | 19:18:56 | 12h 42m 48s |
| 2025-Sep-10, Wednesday | 06:37:05 | 12:57:11 | 19:17:17 | 12h 40m 12s |
| 2025-Sep-11, Thursday | 06:38:02 | 12:56:50 | 19:15:38 | 12h 37m 36s |
| 2025-Sep-12, Friday | 06:38:58 | 12:56:28 | 19:13:58 | 12h 35m 0s |
| 2025-Sep-13, Saturday | 06:39:55 | 12:56:07 | 19:12:19 | 12h 32m 24s |
| 2025-Sep-14, Sunday | 06:40:52 | 12:55:46 | 19:10:39 | 12h 29m 47s |
| 2025-Sep-15, Monday | 06:41:49 | 12:55:24 | 19:08:59 | 12h 27m 10s |
| 2025-Sep-16, Tuesday | 06:42:46 | 12:55:03 | 19:07:19 | 12h 24m 33s |
| 2025-Sep-17, Wednesday | 06:43:43 | 12:54:41 | 19:05:39 | 12h 21m 56s |
| 2025-Sep-18, Thursday | 06:44:41 | 12:54:20 | 19:03:59 | 12h 19m 18s |
| 2025-Sep-19, Friday | 06:45:38 | 12:53:59 | 19:02:19 | 12h 16m 41s |
| 2025-Sep-20, Saturday | 06:46:35 | 12:53:37 | 19:00:39 | 12h 14m 4s |
| 2025-Sep-21, Sunday | 06:47:33 | 12:53:16 | 18:58:59 | 12h 11m 26s |
| 2025-Sep-22, Monday | 06:48:30 | 12:52:55 | 18:57:19 | 12h 8m 49s |
| 2025-Sep-23, Tuesday | 06:49:28 | 12:52:34 | 18:55:39 | 12h 6m 11s |
| 2025-Sep-24, Wednesday | 06:50:26 | 12:52:13 | 18:54:00 | 12h 3m 34s |
| 2025-Sep-25, Thursday | 06:51:24 | 12:51:52 | 18:52:20 | 12h 0m 56s |
| 2025-Sep-26, Friday | 06:52:23 | 12:51:32 | 18:50:41 | 11h 58m 18s |
| 2025-Sep-27, Saturday | 06:53:21 | 12:51:11 | 18:49:01 | 11h 55m 40s |
| 2025-Sep-28, Sunday | 06:54:20 | 12:50:51 | 18:47:22 | 11h 53m 2s |
| 2025-Sep-29, Monday | 06:55:19 | 12:50:31 | 18:45:44 | 11h 50m 25s |
| 2025-Sep-30, Tuesday | 06:56:18 | 12:50:12 | 18:44:05 | 11h 47m 47s |
Day length in Longmont during the year on the chart:
Longmont 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), Orem (Utah), Rio Rancho (New Mexico), Sandy (Utah), Lafayette (Colorado)
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)
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