Barcelona to Castro Valley, CA: time difference
Castro Valley, CA is 9 h behind Barcelona. 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.
Barcelona 12:56 12:56 PM Castro Valley, CA 03:56 3:56 AM You –:–
12:56 12:56 PM
Central European Summer Time · UTC+2
☀️ 08:11 · 🌙 19:02
03:56 3:56 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−9 h
Castro Valley, CA is 9 h behind Barcelona.
When you, Barcelona 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
🇪🇸 Barcelona
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
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇪🇸 Barcelona | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 12:56 | 03:56 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Central European Summer Time | Pacific Daylight Time |
| UTC offset | UTC+2 | UTC-7 |
| Offset from Barcelona | — | −9 h |
| IANA zone | Europe/Madrid | America/Los Angeles |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 08:11 | 07:24 |
| Sunset | 19:02 | 18:23 |
| Daylight | 10 h 50 min | 10 h 59 min |
| People on this clock | 1,660,122 | 61,388 |
Compare Barcelona with another city
More comparisons with Barcelona: the time zones next to it and the far side of the clock.
Big time differences
Barcelona and Castro Valley, CA: common questions
How far behind Barcelona is Castro Valley, CA?
Castro Valley is 9 hours behind Barcelona: UTC−7 against UTC+2.
What time is it in Castro Valley, CA, at the start of the working day in Barcelona?
The working day in Barcelona starts at 9:00 AM; in Castro Valley it is 12:00 AM at that moment.
If it is 6:00 PM in Barcelona, what time is it in Castro Valley, CA?
At 6:00 PM in Barcelona, clocks in Castro Valley show 9:00 AM.
When do working hours in Barcelona and in Castro Valley, CA, overlap?
They don't: there are no shared working hours. The start of the day in Barcelona (9:00 AM) is 12:00 AM in Castro Valley, and the start of the day in Castro Valley is 6:00 PM in Barcelona.
When does the date change in Castro Valley, CA, compared with Barcelona?
The new day starts in Castro Valley later: until 9:00 AM in Barcelona, it is still the previous day there. From 3:00 PM in Castro Valley, Barcelona is already on the next day.
Is the time difference between Barcelona and Castro Valley, CA, the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From October 25, 2026, Castro Valley will be 8 hours behind Barcelona.
