San Jose to San Mateo, CA: time difference
San Mateo, 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 11:43 11:43 AM San Mateo, CA 10:43 10:43 AM You –:–
11:43 11:43 AM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:19
10:43 10:43 AM
Pacific Daylight Time · UTC-7
☀️ 07:21 · 🌙 18:29
·
−1 h
San Mateo, CA is 1 h behind San Jose.
When you, San Jose 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
🇨🇷 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
🇺🇸 San Mateo, 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 | 🇺🇸 San Mateo, CA |
|---|---|---|
| Local time | 11:43 | 10:43 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 07:21 |
| Sunset | 17:19 | 18:29 |
| Daylight | 11 h 53 min | 11 h 8 min |
| People on this clock | 342,188 | 103,536 |
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 San Mateo, CA: common questions
How far behind San Jose is San Mateo, CA?
San Mateo is 1 hour behind San Jose: UTC−7 against UTC−6.
If it is 9:00 AM in San Jose, what time is it in San Mateo, CA?
At 9:00 AM in San Jose, clocks in San Mateo show 8:00 AM.
What time is it in San Mateo, 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 San Mateo.
When is a good time to call San Mateo, CA, from San Jose?
Between 10:00 AM and 6:00 PM in San Jose – that is 9:00 AM to 5:00 PM in San Mateo – both places are within working hours (9:00 AM–6:00 PM).
Until what time in San Jose is it still yesterday in San Mateo, CA?
Before 1:00 AM in San Jose, the date in San Mateo has not changed yet. From 11:00 PM in San Mateo, it is already the next day in San Jose.
Does the time difference between San Jose and San Mateo, CA, change?
Yes. The clocks change only in San Mateo. From November 1, 2026, San Mateo will be 2 hours behind San Jose.
