Sunrise and Sunset times in O'Fallon, United States 
Today:
 Sunrise: 07:18:34
|
 Sunset: 17:07:29
|
Day Length: 9h 48m 55s
Time zone: America/Chicago, UTC -6 h.
Latitude: 38.7851, Longitude: -90.7177
O'Fallon
Missouri, United States 
87 597 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2026-Jan-01, Thursday | 07:21:05 | 12:06:33 | 16:52:01 | 9h 30m 56s |
| 2026-Jan-02, Friday | 07:21:12 | 12:07:01 | 16:52:50 | 9h 31m 38s |
| 2026-Jan-03, Saturday | 07:21:16 | 12:07:29 | 16:53:41 | 9h 32m 25s |
| 2026-Jan-04, Sunday | 07:21:18 | 12:07:56 | 16:54:33 | 9h 33m 15s |
| 2026-Jan-05, Monday | 07:21:19 | 12:08:23 | 16:55:27 | 9h 34m 8s |
| 2026-Jan-06, Tuesday | 07:21:17 | 12:08:49 | 16:56:21 | 9h 35m 4s |
| 2026-Jan-07, Wednesday | 07:21:12 | 12:09:15 | 16:57:17 | 9h 36m 5s |
| 2026-Jan-08, Thursday | 07:21:06 | 12:09:40 | 16:58:14 | 9h 37m 8s |
| 2026-Jan-09, Friday | 07:20:58 | 12:10:05 | 16:59:12 | 9h 38m 14s |
| 2026-Jan-10, Saturday | 07:20:47 | 12:10:29 | 17:00:11 | 9h 39m 24s |
| 2026-Jan-11, Sunday | 07:20:34 | 12:10:53 | 17:01:11 | 9h 40m 37s |
| 2026-Jan-12, Monday | 07:20:20 | 12:11:16 | 17:02:12 | 9h 41m 52s |
| 2026-Jan-13, Tuesday | 07:20:03 | 12:11:38 | 17:03:14 | 9h 43m 11s |
| 2026-Jan-14, Wednesday | 07:19:44 | 12:12:00 | 17:04:17 | 9h 44m 33s |
| 2026-Jan-15, Thursday | 07:19:22 | 12:12:21 | 17:05:20 | 9h 45m 58s |
| 2026-Jan-16, Friday | 07:18:59 | 12:12:42 | 17:06:25 | 9h 47m 26s |
| 2026-Jan-17, Saturday | 07:18:34 | 12:13:02 | 17:07:29 | 9h 48m 55s |
| 2026-Jan-18, Sunday | 07:18:07 | 12:13:21 | 17:08:35 | 9h 50m 28s |
| 2026-Jan-19, Monday | 07:17:38 | 12:13:39 | 17:09:41 | 9h 52m 3s |
| 2026-Jan-20, Tuesday | 07:17:06 | 12:13:57 | 17:10:47 | 9h 53m 41s |
| 2026-Jan-21, Wednesday | 07:16:33 | 12:14:14 | 17:11:54 | 9h 55m 21s |
| 2026-Jan-22, Thursday | 07:15:58 | 12:14:30 | 17:13:02 | 9h 57m 4s |
| 2026-Jan-23, Friday | 07:15:21 | 12:14:45 | 17:14:09 | 9h 58m 48s |
| 2026-Jan-24, Saturday | 07:14:42 | 12:15:00 | 17:15:17 | 10h 0m 35s |
| 2026-Jan-25, Sunday | 07:14:01 | 12:15:13 | 17:16:26 | 10h 2m 25s |
| 2026-Jan-26, Monday | 07:13:18 | 12:15:26 | 17:17:34 | 10h 4m 16s |
| 2026-Jan-27, Tuesday | 07:12:34 | 12:15:38 | 17:18:43 | 10h 6m 9s |
| 2026-Jan-28, Wednesday | 07:11:47 | 12:15:50 | 17:19:52 | 10h 8m 5s |
| 2026-Jan-29, Thursday | 07:10:59 | 12:16:00 | 17:21:01 | 10h 10m 2s |
| 2026-Jan-30, Friday | 07:10:09 | 12:16:10 | 17:22:11 | 10h 12m 2s |
| 2026-Jan-31, Saturday | 07:09:18 | 12:16:19 | 17:23:20 | 10h 14m 2s |
Day length in O'Fallon during the year on the chart:
O'Fallon on United States map:
Locations in the same time zone America/Chicago
Chicago (Illinois), Dallas (Texas), Houston (Texas), Minneapolis (Minnesota), St. Louis (Missouri), San Antonio (Texas), Austin (Texas), Kansas City (Missouri), Montevideo (Montevideo), Milwaukee (Wisconsin), Prague (Praha, Hlavní Město), Nashville (Tennessee), Memphis (Tennessee), New Orleans (Louisiana), Oklahoma City (Oklahoma), Fort Worth (Texas), Omaha (Nebraska), McAllen (Texas), Birmingham (Alabama), Tulsa (Oklahoma), Baton Rouge (Louisiana), Wichita (Kansas), Des Moines (Iowa), Little Rock (Arkansas), Denton (Texas), Madison (Wisconsin), Arlington (Texas), Pensacola (Florida), Fayetteville (Arkansas), Corpus Christi (Texas)
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