Sunrise and Sunset times in Rock Falls, United States 
Today:
 Sunrise: 07:10:57
|
 Sunset: 16:28:12
|
Day Length: 9h 17m 15s
Time zone: America/Chicago, UTC -6 h.
Latitude: 41.7724, Longitude: -89.6928
Rock Falls
Illinois, United States 
8 911 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Dec-01, Monday | 07:06:57 | 11:47:58 | 16:28:59 | 9h 22m 2s |
| 2025-Dec-02, Tuesday | 07:07:59 | 11:48:21 | 16:28:44 | 9h 20m 45s |
| 2025-Dec-03, Wednesday | 07:08:59 | 11:48:45 | 16:28:31 | 9h 19m 32s |
| 2025-Dec-04, Thursday | 07:09:59 | 11:49:09 | 16:28:20 | 9h 18m 21s |
| 2025-Dec-05, Friday | 07:10:57 | 11:49:34 | 16:28:12 | 9h 17m 15s |
| 2025-Dec-06, Saturday | 07:11:53 | 11:49:59 | 16:28:06 | 9h 16m 13s |
| 2025-Dec-07, Sunday | 07:12:48 | 11:50:25 | 16:28:02 | 9h 15m 14s |
| 2025-Dec-08, Monday | 07:13:42 | 11:50:52 | 16:28:01 | 9h 14m 19s |
| 2025-Dec-09, Tuesday | 07:14:35 | 11:51:19 | 16:28:02 | 9h 13m 27s |
| 2025-Dec-10, Wednesday | 07:15:26 | 11:51:46 | 16:28:06 | 9h 12m 40s |
| 2025-Dec-11, Thursday | 07:16:15 | 11:52:13 | 16:28:12 | 9h 11m 57s |
| 2025-Dec-12, Friday | 07:17:02 | 11:52:41 | 16:28:21 | 9h 11m 19s |
| 2025-Dec-13, Saturday | 07:17:48 | 11:53:10 | 16:28:31 | 9h 10m 43s |
| 2025-Dec-14, Sunday | 07:18:32 | 11:53:38 | 16:28:44 | 9h 10m 12s |
| 2025-Dec-15, Monday | 07:19:15 | 11:54:07 | 16:29:00 | 9h 9m 45s |
| 2025-Dec-16, Tuesday | 07:19:55 | 11:54:36 | 16:29:18 | 9h 9m 23s |
| 2025-Dec-17, Wednesday | 07:20:34 | 11:55:06 | 16:29:38 | 9h 9m 4s |
| 2025-Dec-18, Thursday | 07:21:10 | 11:55:35 | 16:30:00 | 9h 8m 50s |
| 2025-Dec-19, Friday | 07:21:45 | 11:56:05 | 16:30:25 | 9h 8m 40s |
| 2025-Dec-20, Saturday | 07:22:18 | 11:56:35 | 16:30:52 | 9h 8m 34s |
| 2025-Dec-21, Sunday | 07:22:48 | 11:57:05 | 16:31:21 | 9h 8m 33s |
| 2025-Dec-22, Monday | 07:23:17 | 11:57:34 | 16:31:52 | 9h 8m 35s |
| 2025-Dec-23, Tuesday | 07:23:43 | 11:58:04 | 16:32:25 | 9h 8m 42s |
| 2025-Dec-24, Wednesday | 07:24:07 | 11:58:34 | 16:33:00 | 9h 8m 53s |
| 2025-Dec-25, Thursday | 07:24:30 | 11:59:04 | 16:33:38 | 9h 9m 8s |
| 2025-Dec-26, Friday | 07:24:49 | 11:59:33 | 16:34:17 | 9h 9m 28s |
| 2025-Dec-27, Saturday | 07:25:07 | 12:00:03 | 16:34:59 | 9h 9m 52s |
| 2025-Dec-28, Sunday | 07:25:22 | 12:00:32 | 16:35:42 | 9h 10m 20s |
| 2025-Dec-29, Monday | 07:25:35 | 12:01:01 | 16:36:27 | 9h 10m 52s |
| 2025-Dec-30, Tuesday | 07:25:46 | 12:01:30 | 16:37:14 | 9h 11m 28s |
| 2025-Dec-31, Wednesday | 07:25:54 | 12:01:59 | 16:38:03 | 9h 12m 9s |
Day length in Rock Falls during the year on the chart:
Rock Falls 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