New York, NY to Castro Valley, CA: time difference
Castro Valley, CA is 3 h behind New York, NY. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
New York, NY 06:23 6:23 AM Castro Valley, CA 03:23 3:23 AM You –:–
06:23 6:23 AM
Eastern Daylight Time · UTC-4
☀️ 07:16 · 🌙 18:08
03:23 3:23 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−3 h
Castro Valley, CA is 3 h behind New York, NY.
When you, New York, NY and Castro Valley, CA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 New York, NY
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇺🇸 Castro Valley, CA
21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 New York, NY | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 06:23 | 03:23 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from New York, NY | — | −3 h |
| IANA zone | America/New York | America/Los Angeles |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:16 | 07:24 |
| Sunset | 18:08 | 18:23 |
| Daylight | 10 h 52 min | 10 h 59 min |
| People on this clock | 8,804,190 | 61,388 |
Compare New York, NY with another city
More comparisons with New York, NY: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
New York, NY and Castro Valley, CA: common questions
How many hours behind New York, NY, is Castro Valley, CA?
The clocks in Castro Valley are 3 hours behind those in New York (UTC−7 and UTC−4).
What time is it in Castro Valley, CA, at the start of the working day in New York, NY?
The working day in New York starts at 9:00 AM; in Castro Valley it is 6:00 AM at that moment.
If it is 6:00 PM in New York, NY, what time is it in Castro Valley, CA?
At 6:00 PM in New York, clocks in Castro Valley show 3:00 PM.
When is a good time to call Castro Valley, CA, from New York, NY?
Between 12:00 PM and 6:00 PM in New York – that is 9:00 AM to 3:00 PM in Castro Valley – both places are within working hours (9:00 AM–6:00 PM).
Until what time in New York, NY, is it still yesterday in Castro Valley, CA?
Before 3:00 AM in New York, the date in Castro Valley has not changed yet. From 9:00 PM in Castro Valley, it is already the next day in New York.
Does the time gap between New York, NY, and Castro Valley, CA, change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 3 hours.
