Barcelona to San Mateo, CA: time difference
San Mateo, 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 18:51 6:51 PM San Mateo, CA 09:51 9:51 AM You –:–
18:51 6:51 PM
Central European Summer Time · UTC+2
☀️ 08:07 · 🌙 19:08
09:51 9:51 AM
Pacific Daylight Time · UTC-7
☀️ 07:21 · 🌙 18:29
·
−9 h
San Mateo, CA is 9 h behind Barcelona.
When you, Barcelona and San Mateo, 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
🇺🇸 San Mateo, 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 | 🇺🇸 San Mateo, CA |
|---|---|---|
| Local time | 18:51 | 09:51 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 08:07 | 07:21 |
| Sunset | 19:08 | 18:29 |
| Daylight | 11 h 1 min | 11 h 8 min |
| People on this clock | 1,660,122 | 103,536 |
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 San Mateo, CA: common questions
How far behind Barcelona is San Mateo, CA?
San Mateo is 9 hours behind Barcelona: UTC−7 against UTC+2.
What time is it in San Mateo, CA, at the start of the working day in Barcelona?
The working day in Barcelona starts at 9:00 AM; in San Mateo it is 12:00 AM at that moment.
If it is 6:00 PM in Barcelona, what time is it in San Mateo, CA?
At 6:00 PM in Barcelona, clocks in San Mateo show 9:00 AM.
When do working hours in Barcelona and in San Mateo, 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 San Mateo, and the start of the day in San Mateo is 6:00 PM in Barcelona.
Until what time in Barcelona is it still yesterday in San Mateo, CA?
Before 9:00 AM in Barcelona, the date in San Mateo has not changed yet. From 3:00 PM in San Mateo, it is already the next day in Barcelona.
Does the time difference between Barcelona and San Mateo, CA, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, San Mateo will be 8 hours behind Barcelona.
