Sunrise and Sunset times in St. Helena, United States 
Today:
 Sunrise: 07:23:30
|
 Sunset: 18:25:57
|
Day Length: 11h 2m 27s
Time zone: America/Los_Angeles, UTC -7 h.
Latitude: 38.5063, Longitude: -122.468
St. Helena
🌤 Possibly a moderately beautiful sunset.
California, United States 
7 168 people
Current temperature 11 ° C 
Partly cloudy
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Oct-01, Wednesday | 07:06:14 | 12:59:20 | 18:52:26 | 11h 46m 12s |
| 2025-Oct-02, Thursday | 07:07:09 | 12:59:01 | 18:50:53 | 11h 43m 44s |
| 2025-Oct-03, Friday | 07:08:04 | 12:58:42 | 18:49:20 | 11h 41m 16s |
| 2025-Oct-04, Saturday | 07:09:00 | 12:58:24 | 18:47:48 | 11h 38m 48s |
| 2025-Oct-05, Sunday | 07:09:55 | 12:58:06 | 18:46:16 | 11h 36m 21s |
| 2025-Oct-06, Monday | 07:10:52 | 12:57:48 | 18:44:45 | 11h 33m 53s |
| 2025-Oct-07, Tuesday | 07:11:48 | 12:57:31 | 18:43:14 | 11h 31m 26s |
| 2025-Oct-08, Wednesday | 07:12:45 | 12:57:14 | 18:41:44 | 11h 28m 59s |
| 2025-Oct-09, Thursday | 07:13:42 | 12:56:58 | 18:40:14 | 11h 26m 32s |
| 2025-Oct-10, Friday | 07:14:39 | 12:56:42 | 18:38:45 | 11h 24m 6s |
| 2025-Oct-11, Saturday | 07:15:37 | 12:56:27 | 18:37:17 | 11h 21m 40s |
| 2025-Oct-12, Sunday | 07:16:35 | 12:56:12 | 18:35:49 | 11h 19m 14s |
| 2025-Oct-13, Monday | 07:17:33 | 12:55:57 | 18:34:22 | 11h 16m 49s |
| 2025-Oct-14, Tuesday | 07:18:32 | 12:55:44 | 18:32:56 | 11h 14m 24s |
| 2025-Oct-15, Wednesday | 07:19:30 | 12:55:30 | 18:31:30 | 11h 12m 0s |
| 2025-Oct-16, Thursday | 07:20:30 | 12:55:18 | 18:30:06 | 11h 9m 36s |
| 2025-Oct-17, Friday | 07:21:29 | 12:55:06 | 18:28:42 | 11h 7m 13s |
| 2025-Oct-18, Saturday | 07:22:29 | 12:54:54 | 18:27:19 | 11h 4m 50s |
| 2025-Oct-19, Sunday | 07:23:30 | 12:54:43 | 18:25:57 | 11h 2m 27s |
| 2025-Oct-20, Monday | 07:24:30 | 12:54:33 | 18:24:36 | 11h 0m 6s |
| 2025-Oct-21, Tuesday | 07:25:31 | 12:54:24 | 18:23:16 | 10h 57m 45s |
| 2025-Oct-22, Wednesday | 07:26:33 | 12:54:15 | 18:21:57 | 10h 55m 24s |
| 2025-Oct-23, Thursday | 07:27:34 | 12:54:06 | 18:20:39 | 10h 53m 5s |
| 2025-Oct-24, Friday | 07:28:36 | 12:53:59 | 18:19:22 | 10h 50m 46s |
| 2025-Oct-25, Saturday | 07:29:39 | 12:53:52 | 18:18:06 | 10h 48m 27s |
| 2025-Oct-26, Sunday | 07:30:41 | 12:53:46 | 18:16:51 | 10h 46m 10s |
| 2025-Oct-27, Monday | 07:31:44 | 12:53:41 | 18:15:38 | 10h 43m 54s |
| 2025-Oct-28, Tuesday | 07:32:47 | 12:53:36 | 18:14:25 | 10h 41m 38s |
| 2025-Oct-29, Wednesday | 07:33:51 | 12:53:33 | 18:13:14 | 10h 39m 23s |
| 2025-Oct-30, Thursday | 07:34:55 | 12:53:30 | 18:12:04 | 10h 37m 9s |
| 2025-Oct-31, Friday | 07:35:59 | 12:53:27 | 18:10:56 | 10h 34m 57s |
Day length in St. Helena during the year on the chart:
St. Helena on United States map:
Locations in the same time zone America/Los_Angeles
Los Angeles (California), Seattle (Washington), San Francisco (California), San Diego (California), Riverside (California), Las Vegas (Nevada), Portland (Oregon), Sacramento (California), San Jose (California), Fresno (California), Concord (California), Mission Viejo (California), Bakersfield (California), Murrieta (California), Long Beach (California), Reno (Nevada), Oakland (California), Indio (California), Spokane (Washington), Stockton (California), Oxnard (California), Modesto (California), Anaheim (California), Lancaster (California), Victorville (California), Santa Ana (California), Santa Rosa (California), Santa Clarita (California), Antioch (California), Henderson (Nevada)
Largest populated areas in United States
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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