Sunrise and Sunset times in St. Marys, United States 
Today:
 Sunrise: 07:25:42
|
 Sunset: 16:45:47
|
Day Length: 9h 20m 5s
Time zone: America/Chicago, UTC -6 h.
Latitude: 41.3076, Longitude: -93.7338
St. Marys
Iowa, United States 
123 people
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Dec-01, Monday | 07:21:45 | 12:04:08 | 16:46:31 | 9h 24m 46s |
| 2025-Dec-02, Tuesday | 07:22:46 | 12:04:31 | 16:46:17 | 9h 23m 31s |
| 2025-Dec-03, Wednesday | 07:23:46 | 12:04:55 | 16:46:04 | 9h 22m 18s |
| 2025-Dec-04, Thursday | 07:24:44 | 12:05:19 | 16:45:54 | 9h 21m 10s |
| 2025-Dec-05, Friday | 07:25:42 | 12:05:44 | 16:45:47 | 9h 20m 5s |
| 2025-Dec-06, Saturday | 07:26:38 | 12:06:10 | 16:45:42 | 9h 19m 4s |
| 2025-Dec-07, Sunday | 07:27:32 | 12:06:36 | 16:45:39 | 9h 18m 7s |
| 2025-Dec-08, Monday | 07:28:26 | 12:07:02 | 16:45:38 | 9h 17m 12s |
| 2025-Dec-09, Tuesday | 07:29:18 | 12:07:29 | 16:45:40 | 9h 16m 22s |
| 2025-Dec-10, Wednesday | 07:30:08 | 12:07:56 | 16:45:44 | 9h 15m 36s |
| 2025-Dec-11, Thursday | 07:30:57 | 12:08:24 | 16:45:50 | 9h 14m 53s |
| 2025-Dec-12, Friday | 07:31:44 | 12:08:52 | 16:45:59 | 9h 14m 15s |
| 2025-Dec-13, Saturday | 07:32:30 | 12:09:20 | 16:46:10 | 9h 13m 40s |
| 2025-Dec-14, Sunday | 07:33:13 | 12:09:49 | 16:46:24 | 9h 13m 11s |
| 2025-Dec-15, Monday | 07:33:55 | 12:10:18 | 16:46:40 | 9h 12m 45s |
| 2025-Dec-16, Tuesday | 07:34:36 | 12:10:47 | 16:46:58 | 9h 12m 22s |
| 2025-Dec-17, Wednesday | 07:35:14 | 12:11:16 | 16:47:18 | 9h 12m 4s |
| 2025-Dec-18, Thursday | 07:35:51 | 12:11:45 | 16:47:40 | 9h 11m 49s |
| 2025-Dec-19, Friday | 07:36:25 | 12:12:15 | 16:48:05 | 9h 11m 40s |
| 2025-Dec-20, Saturday | 07:36:58 | 12:12:45 | 16:48:32 | 9h 11m 34s |
| 2025-Dec-21, Sunday | 07:37:28 | 12:13:15 | 16:49:01 | 9h 11m 33s |
| 2025-Dec-22, Monday | 07:37:57 | 12:13:45 | 16:49:32 | 9h 11m 35s |
| 2025-Dec-23, Tuesday | 07:38:23 | 12:14:14 | 16:50:06 | 9h 11m 43s |
| 2025-Dec-24, Wednesday | 07:38:47 | 12:14:44 | 16:50:41 | 9h 11m 54s |
| 2025-Dec-25, Thursday | 07:39:10 | 12:15:14 | 16:51:18 | 9h 12m 8s |
| 2025-Dec-26, Friday | 07:39:30 | 12:15:44 | 16:51:57 | 9h 12m 27s |
| 2025-Dec-27, Saturday | 07:39:47 | 12:16:13 | 16:52:39 | 9h 12m 52s |
| 2025-Dec-28, Sunday | 07:40:03 | 12:16:42 | 16:53:22 | 9h 13m 19s |
| 2025-Dec-29, Monday | 07:40:16 | 12:17:11 | 16:54:07 | 9h 13m 51s |
| 2025-Dec-30, Tuesday | 07:40:27 | 12:17:40 | 16:54:53 | 9h 14m 26s |
| 2025-Dec-31, Wednesday | 07:40:36 | 12:18:09 | 16:55:42 | 9h 15m 6s |
Day length in St. Marys during the year on the chart:
St. Marys 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