San Jose to Fontana, CA: time difference
Fontana, 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 16:21 4:21 PM Fontana, CA 15:21 3:21 PM You –:–
16:21 4:21 PM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:18
15:21 3:21 PM
Pacific Daylight Time · UTC-7
☀️ 07:00 · 🌙 18:11
·
−1 h
Fontana, CA is 1 h behind San Jose.
When you, San Jose and Fontana, 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
🇺🇸 Fontana, 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 | 🇺🇸 Fontana, CA |
|---|---|---|
| Local time | 16:21 | 15:21 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 07:00 |
| Sunset | 17:18 | 18:11 |
| Daylight | 11 h 52 min | 11 h 11 min |
| People on this clock | 342,188 | 210,000 |
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 Fontana, CA: common questions
How many hours behind San Jose is Fontana, CA?
The clocks in Fontana are 1 hour behind those in San Jose (UTC−7 and UTC−6).
If it is 9:00 AM in San Jose, what time is it in Fontana, CA?
At 9:00 AM in San Jose, clocks in Fontana show 8:00 AM.
What time is it in Fontana, 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 Fontana.
When do working hours in San Jose and in Fontana, CA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in San Jose, which is 9:00 AM to 5:00 PM in Fontana.
When does the date change in Fontana, CA, compared with San Jose?
The new day starts in Fontana later: until 1:00 AM in San Jose, it is still the previous day there. From 11:00 PM in Fontana, San Jose is already on the next day.
Does the time gap between San Jose and Fontana, CA, change during the year?
Yes – daylight saving time is used in Fontana but not in San Jose. From November 1, 2026, Fontana will be 2 hours behind San Jose.
