Sunrise and Sunset times in Rock Valley, United States

Rock Valley United States Daily sun schedule, day length and annual chart
☀️ Local time
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Sunrise
Today sunrise
06:34:14
Sunset
Today sunset
20:13:47
🌤️
Day length
13h 39m 33s
City
Rock Valley
Region / Country
Iowa, United States
Time zone
America/Chicago, UTC -5 h.
Population
3 409 people
Latitude
43.2042
Longitude
-96.2909

Select month and year

Date Sunrise Solar Noon Sunset Day length
2026-Apr-01, Wednesday 07:06:17 13:28:56 19:51:35 12h 45m 18s
2026-Apr-02, Thursday 07:04:32 13:28:38 19:52:45 12h 48m 13s
2026-Apr-03, Friday 07:02:47 13:28:21 19:53:55 12h 51m 8s
2026-Apr-04, Saturday 07:01:02 13:28:03 19:55:05 12h 54m 3s
2026-Apr-05, Sunday 06:59:17 13:27:46 19:56:15 12h 56m 58s
2026-Apr-06, Monday 06:57:33 13:27:29 19:57:25 12h 59m 52s
2026-Apr-07, Tuesday 06:55:49 13:27:12 19:58:35 13h 2m 46s
2026-Apr-08, Wednesday 06:54:06 13:26:56 19:59:46 13h 5m 40s
2026-Apr-09, Thursday 06:52:23 13:26:39 20:00:56 13h 8m 33s
2026-Apr-10, Friday 06:50:41 13:26:23 20:02:06 13h 11m 25s
2026-Apr-11, Saturday 06:48:59 13:26:08 20:03:16 13h 14m 17s
2026-Apr-12, Sunday 06:47:18 13:25:52 20:04:26 13h 17m 8s
2026-Apr-13, Monday 06:45:38 13:25:37 20:05:36 13h 19m 58s
2026-Apr-14, Tuesday 06:43:58 13:25:22 20:06:46 13h 22m 48s
2026-Apr-15, Wednesday 06:42:19 13:25:08 20:07:56 13h 25m 37s
2026-Apr-16, Thursday 06:40:40 13:24:53 20:09:07 13h 28m 27s
2026-Apr-17, Friday 06:39:03 13:24:40 20:10:17 13h 31m 14s
2026-Apr-18, Saturday 06:37:26 13:24:26 20:11:27 13h 34m 1s
2026-Apr-19, Sunday 06:35:50 13:24:13 20:12:37 13h 36m 47s
2026-Apr-20, Monday 06:34:14 13:24:01 20:13:47 13h 39m 33s
2026-Apr-21, Tuesday 06:32:40 13:23:49 20:14:57 13h 42m 17s
2026-Apr-22, Wednesday 06:31:07 13:23:37 20:16:07 13h 45m 0s
2026-Apr-23, Thursday 06:29:34 13:23:26 20:17:17 13h 47m 43s
2026-Apr-24, Friday 06:28:03 13:23:15 20:18:27 13h 50m 24s
2026-Apr-25, Saturday 06:26:32 13:23:05 20:19:37 13h 53m 5s
2026-Apr-26, Sunday 06:25:03 13:22:55 20:20:47 13h 55m 44s
2026-Apr-27, Monday 06:23:35 13:22:46 20:21:57 13h 58m 22s
2026-Apr-28, Tuesday 06:22:08 13:22:37 20:23:06 14h 0m 58s
2026-Apr-29, Wednesday 06:20:42 13:22:29 20:24:16 14h 3m 34s
2026-Apr-30, Thursday 06:19:17 13:22:21 20:25:25 14h 6m 8s

Day length in Rock Valley during the year on the chart

Rock Valley 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