Sunrise and Sunset times in St. Marys, United States

St. Marys United States Daily sun schedule, day length and annual chart
☀️ Local time
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Sunrise
Today sunrise
06:27:06
Sunset
Today sunset
20:00:28
🌤️
Day length
13h 33m 22s
City
St. Marys
Region / Country
Iowa, United States
Time zone
America/Chicago, UTC -5 h.
Population
123 people
Latitude
41.3076
Longitude
-93.7338

Select month and year

Date Sunrise Solar Noon Sunset Day length
2026-Apr-01, Wednesday 06:57:22 13:18:42 19:40:02 12h 42m 40s
2026-Apr-02, Thursday 06:55:43 13:18:25 19:41:07 12h 45m 24s
2026-Apr-03, Friday 06:54:03 13:18:07 19:42:11 12h 48m 8s
2026-Apr-04, Saturday 06:52:24 13:17:50 19:43:16 12h 50m 52s
2026-Apr-05, Sunday 06:50:45 13:17:33 19:44:20 12h 53m 35s
2026-Apr-06, Monday 06:49:06 13:17:16 19:45:25 12h 56m 19s
2026-Apr-07, Tuesday 06:47:28 13:16:59 19:46:29 12h 59m 1s
2026-Apr-08, Wednesday 06:45:51 13:16:42 19:47:34 13h 1m 43s
2026-Apr-09, Thursday 06:44:13 13:16:26 19:48:38 13h 4m 25s
2026-Apr-10, Friday 06:42:37 13:16:10 19:49:43 13h 7m 6s
2026-Apr-11, Saturday 06:41:01 13:15:54 19:50:47 13h 9m 46s
2026-Apr-12, Sunday 06:39:25 13:15:39 19:51:52 13h 12m 27s
2026-Apr-13, Monday 06:37:50 13:15:23 19:52:56 13h 15m 6s
2026-Apr-14, Tuesday 06:36:16 13:15:08 19:54:01 13h 17m 45s
2026-Apr-15, Wednesday 06:34:43 13:14:54 19:55:05 13h 20m 22s
2026-Apr-16, Thursday 06:33:10 13:14:40 19:56:10 13h 23m 0s
2026-Apr-17, Friday 06:31:38 13:14:26 19:57:14 13h 25m 36s
2026-Apr-18, Saturday 06:30:06 13:14:13 19:58:19 13h 28m 13s
2026-Apr-19, Sunday 06:28:36 13:14:00 19:59:24 13h 30m 48s
2026-Apr-20, Monday 06:27:06 13:13:47 20:00:28 13h 33m 22s
2026-Apr-21, Tuesday 06:25:37 13:13:35 20:01:33 13h 35m 56s
2026-Apr-22, Wednesday 06:24:10 13:13:23 20:02:37 13h 38m 27s
2026-Apr-23, Thursday 06:22:43 13:13:12 20:03:42 13h 40m 59s
2026-Apr-24, Friday 06:21:17 13:13:01 20:04:46 13h 43m 29s
2026-Apr-25, Saturday 06:19:51 13:12:51 20:05:51 13h 46m 0s
2026-Apr-26, Sunday 06:18:27 13:12:41 20:06:55 13h 48m 28s
2026-Apr-27, Monday 06:17:05 13:12:32 20:08:00 13h 50m 55s
2026-Apr-28, Tuesday 06:15:43 13:12:23 20:09:04 13h 53m 21s
2026-Apr-29, Wednesday 06:14:22 13:12:15 20:10:08 13h 55m 46s
2026-Apr-30, Thursday 06:13:02 13:12:07 20:11:12 13h 58m 10s

Day length in St. Marys during the year on the chart

St. Marys on United States map

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