United States
Time now in Castro Valley
Sunrise 06:29Sunset 07:54Time zone UTC −7
Time zone
America/Los_Angeles
UTC offset
UTC −7
Daylight saving
In effect now
Population
61,388
Sunrise
06:29
Sunset
07:54
Day length
13h 25m
Coordinates
37.69, -122.09
Time difference from Castro Valley
Hours ahead (right) or behind (left) Castro Valley right now.
Castro Valley on the map
About the time in Castro Valley
Castro Valley runs on America/Los_Angeles, which puts the city UTC −7 from Coordinated Universal Time right now. The clock at the top of this page is not copied from your device: it is anchored to our reference timestamp and re-rendered every second against the IANA time zone database, so it stays right even when a laptop or phone has quietly drifted.
If you are coordinating from another country, the shortcut is the working window: a normal Castro Valley day of 09:00–17:00 falls between 16:00–00:00 UTC. Convert your own hours into UTC once and you can tell at a glance whether someone there is likely to be at their desk.
Sunrise today lands at 06:29 and sunset at 07:54 local time, giving 13h 25m of daylight. Those figures come from the city's own coordinates (37.69, -122.09) rather than a country-wide average, so they match what you would actually see from a window in Castro Valley.
Frequently asked questions about time in Castro Valley
- Is the clock on this page accurate?
- It is synchronised with our server rather than your device, then formatted for America/Los_Angeles, so a drifting device clock does not affect what you see.
- What time is it in Castro Valley right now?
- The live clock above shows the current time in Castro Valley, updating every second from America/Los_Angeles (UTC −7).
- What are normal business hours in Castro Valley in UTC?
- A 09:00–17:00 working day in Castro Valley runs from 16:00–00:00 UTC today.
- Which time zone is Castro Valley in?
- Castro Valley uses America/Los_Angeles, currently UTC −7.
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