San Jose to Castro Valley, CA: time difference
Castro Valley, CA is 1 h behind San Jose. 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.
San Jose 04:15 4:15 AM Castro Valley, CA 03:15 3:15 AM You –:–
04:15 4:15 AM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:17
03:15 3:15 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−1 h
Castro Valley, CA is 1 h behind San Jose.
When you, San Jose 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
🇨🇷 San Jose
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
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 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 San Jose | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 04:15 | 03:15 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Central Standard Time | Pacific Daylight Time |
| UTC offset | UTC-6 | UTC-7 |
| Offset from San Jose | — | −1 h |
| IANA zone | America/Costa Rica | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 05:26 | 07:24 |
| Sunset | 17:17 | 18:23 |
| Daylight | 11 h 51 min | 10 h 59 min |
| People on this clock | 342,188 | 61,388 |
Compare San Jose with another city
More comparisons with San Jose: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Jose and Castro Valley, CA: common questions
How far behind San Jose is Castro Valley, CA?
Castro Valley is 1 hour behind San Jose: UTC−7 against UTC−6.
What time is it in Castro Valley, CA, at the start of the working day in San Jose?
The working day in San Jose starts at 9:00 AM; in Castro Valley it is 8:00 AM at that moment.
What time is it in Castro Valley, CA, when it is 6:00 PM in San Jose?
When it is 6:00 PM in San Jose, it is 5:00 PM in Castro Valley.
Is there a time when both San Jose and Castro Valley, CA, are at work?
Yes: from 10:00 AM to 6:00 PM in San Jose (9:00 AM to 5:00 PM in Castro Valley), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Castro Valley, CA?
Until 1:00 AM in San Jose it is still the previous day in Castro Valley. The other way round, from 11:00 PM in Castro Valley it is already the next day in San Jose.
Is the time difference between San Jose and Castro Valley, CA, the same all year?
No. Only Castro Valley switches to summer time, so the gap changes twice a year. From November 1, 2026, Castro Valley will be 2 hours behind San Jose.
