Sunrise and Sunset times in Port Byron, United States 
Today:
 Sunrise: 07:23:20
|
 Sunset: 17:00:51
|
Day Length: 9h 37m 31s
Time zone: America/Chicago, UTC -6 h.
Latitude: 41.6166, Longitude: -90.3273
Port Byron
Illinois, United States 
1 639 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2026-Jan-01, Thursday | 07:28:03 | 12:04:59 | 16:41:56 | 9h 13m 53s |
| 2026-Jan-02, Friday | 07:28:07 | 12:05:27 | 16:42:48 | 9h 14m 41s |
| 2026-Jan-03, Saturday | 07:28:09 | 12:05:55 | 16:43:41 | 9h 15m 32s |
| 2026-Jan-04, Sunday | 07:28:08 | 12:06:22 | 16:44:36 | 9h 16m 28s |
| 2026-Jan-05, Monday | 07:28:05 | 12:06:49 | 16:45:33 | 9h 17m 28s |
| 2026-Jan-06, Tuesday | 07:27:59 | 12:07:15 | 16:46:31 | 9h 18m 32s |
| 2026-Jan-07, Wednesday | 07:27:51 | 12:07:41 | 16:47:31 | 9h 19m 40s |
| 2026-Jan-08, Thursday | 07:27:41 | 12:08:06 | 16:48:31 | 9h 20m 50s |
| 2026-Jan-09, Friday | 07:27:29 | 12:08:31 | 16:49:33 | 9h 22m 4s |
| 2026-Jan-10, Saturday | 07:27:14 | 12:08:55 | 16:50:37 | 9h 23m 23s |
| 2026-Jan-11, Sunday | 07:26:57 | 12:09:19 | 16:51:41 | 9h 24m 44s |
| 2026-Jan-12, Monday | 07:26:38 | 12:09:42 | 16:52:47 | 9h 26m 9s |
| 2026-Jan-13, Tuesday | 07:26:16 | 12:10:05 | 16:53:53 | 9h 27m 37s |
| 2026-Jan-14, Wednesday | 07:25:52 | 12:10:27 | 16:55:01 | 9h 29m 9s |
| 2026-Jan-15, Thursday | 07:25:26 | 12:10:48 | 16:56:09 | 9h 30m 43s |
| 2026-Jan-16, Friday | 07:24:58 | 12:11:08 | 16:57:18 | 9h 32m 20s |
| 2026-Jan-17, Saturday | 07:24:28 | 12:11:28 | 16:58:29 | 9h 34m 1s |
| 2026-Jan-18, Sunday | 07:23:55 | 12:11:47 | 16:59:39 | 9h 35m 44s |
| 2026-Jan-19, Monday | 07:23:20 | 12:12:05 | 17:00:51 | 9h 37m 31s |
| 2026-Jan-20, Tuesday | 07:22:43 | 12:12:23 | 17:02:03 | 9h 39m 20s |
| 2026-Jan-21, Wednesday | 07:22:04 | 12:12:40 | 17:03:16 | 9h 41m 12s |
| 2026-Jan-22, Thursday | 07:21:23 | 12:12:56 | 17:04:29 | 9h 43m 6s |
| 2026-Jan-23, Friday | 07:20:40 | 12:13:11 | 17:05:43 | 9h 45m 3s |
| 2026-Jan-24, Saturday | 07:19:54 | 12:13:26 | 17:06:57 | 9h 47m 3s |
| 2026-Jan-25, Sunday | 07:19:07 | 12:13:40 | 17:08:12 | 9h 49m 5s |
| 2026-Jan-26, Monday | 07:18:18 | 12:13:53 | 17:09:27 | 9h 51m 9s |
| 2026-Jan-27, Tuesday | 07:17:27 | 12:14:05 | 17:10:42 | 9h 53m 15s |
| 2026-Jan-28, Wednesday | 07:16:34 | 12:14:16 | 17:11:58 | 9h 55m 24s |
| 2026-Jan-29, Thursday | 07:15:39 | 12:14:27 | 17:13:14 | 9h 57m 35s |
| 2026-Jan-30, Friday | 07:14:43 | 12:14:36 | 17:14:30 | 9h 59m 47s |
| 2026-Jan-31, Saturday | 07:13:44 | 12:14:45 | 17:15:46 | 10h 2m 2s |
Day length in Port Byron during the year on the chart:
Port Byron 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