Clayton in numbers
- Coordinates
- 37.9410, -121.9360
- Elevation
- 120 m above sea level
- Population
- 11 867
- Region
- California
- Country
- United States, North America
- Capital
- Washington, D.C. — 3873 km away
- Same name
- 41 more places in the world share this name
Use this page to see what time it is in Clayton, California, United States — the America/Los_Angeles zone applies there (−8).
Clayton, United States
Monday, 2 November 2026
UTC−8 · America/Los_Angeles
Local time in Clayton
UTC−8 · no daylight saving time
Clayton keeps America/Los_Angeles clock_time.
Sunrise 6:36 AM Solar noon 11:52 AM Sunset 5:09 PM Daylight 10 h 34 min Night 13 h 26 min Civil twilight 6:08 AM – 5:37 PM
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Weather data by Open-Meteo, updated every 30 minutes.
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
The postal code count for Clayton is 12.
Clayton tells time by America/Los_Angeles, an offset of UTC−8. Clock shift for daylight saving: No.
First light in Clayton comes at 6:36 AM today; darkness returns after 5:09 PM. The day gives 10 h 34 min of light.
Contra Costa County and Cowell are close to Clayton and observe the same time.