Sun Times in Castro Valley
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Frequently Asked Questions
What time is sunrise in Castro Valley?
Check the sunrise time displayed above for Castro Valley (America/Los_Angeles). Times are calculated from the city's coordinates.
What time is sunset in Castro Valley?
Check the sunset time displayed above for Castro Valley (America/Los_Angeles). Times are calculated from the city's coordinates.
When is golden hour in Castro Valley?
Golden hour times for Castro Valley are displayed above. Morning golden hour runs from sunrise until about an hour after. Evening golden hour starts about an hour before sunset.
How long is the day in Castro Valley?
The day length for Castro Valley is shown above. It represents the time between sunrise and sunset.
What time is the sun at its highest point in Castro Valley?
The sun's highest point (solar noon) for Castro Valley is shown in the times above (America/Los_Angeles). This is when the sun crosses the meridian.
What time does it get dark in Castro Valley?
Sunset and dusk times for Castro Valley are displayed above (America/Los_Angeles). It typically takes over an hour after sunset for the sky to get fully dark.
How long does twilight last in Castro Valley?
Twilight duration in Castro Valley varies by season. You can calculate it from the sunset and astronomical dusk times shown above.
What is the earliest sunrise of the year in Castro Valley?
The earliest sunrise in Castro Valley in 2026 is at 5:46 AM on June 6 (America/Los_Angeles). This occurs around the summer solstice when days are longest.
What is the latest sunset of the year in Castro Valley?
The latest sunset in Castro Valley in 2026 is at 8:34 PM on June 25 (America/Los_Angeles). This occurs shortly after the summer solstice.
What time does it actually get dark after sunset in Castro Valley?
After sunset in Castro Valley, civil twilight lasts roughly 30 minutes, during which the sky fades but remains somewhat bright. Full darkness follows after astronomical dusk. See the exact times above.
What these times mean
Solar times in Castro Valley shift throughout the year. Each stage of the day brings distinct light that photographers, outdoor planners, and everyday users rely on.
- Dawn
- The first usable twilight before sunrise, when the horizon brightens and color gradually returns to the sky.
- Sunrise
- The moment the upper edge of the sun appears above the horizon, starting direct daylight.
- Golden Hour
- The low-angle window just after sunrise and just before sunset, producing warm, soft light favored by photographers.
- Sunset
- The moment the upper edge of the sun drops below the horizon, ending direct sunlight for the day.
- Dusk
- The fading twilight after sunset, ending with astronomical dusk when the sky becomes fully dark.
Monthly daylight in Castro Valley
Sunrise, sunset, and total daylight in Castro Valley on the 15th of each month for 2026. Times reflect the city's local timezone.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:22 AM | 5:13 PM | 9h 51m |
| February | 6:57 AM | 5:47 PM | 10h 50m |
| March | 7:19 AM | 7:15 PM | 11h 57m |
| April | 6:33 AM | 7:44 PM | 13h 11m |
| May | 5:58 AM | 8:11 PM | 14h 13m |
| June | 5:46 AM | 8:31 PM | 14h 46m |
| July | 5:58 AM | 8:29 PM | 14h 31m |
| August | 6:24 AM | 8:00 PM | 13h 37m |
| September | 6:50 AM | 7:15 PM | 12h 25m |
| October | 7:16 AM | 6:30 PM | 11h 14m |
| November | 6:48 AM | 4:57 PM | 10h 08m |
| December | 7:16 AM | 4:50 PM | 9h 34m |
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