San Jose to Rancho Cucamonga, CA: time difference
Rancho Cucamonga, 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 12:39 12:39 PM Rancho Cucamonga, CA 11:39 11:39 AM You –:–
12:39 12:39 PM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:19
11:39 11:39 AM
Pacific Daylight Time · UTC-7
☀️ 06:58 · 🌙 18:14
·
−1 h
Rancho Cucamonga, CA is 1 h behind San Jose.
When you, San Jose and Rancho Cucamonga, 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
🇺🇸 Rancho Cucamonga, 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
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Time zones side by side
| Detail | 🇨🇷 San Jose | 🇺🇸 Rancho Cucamonga, CA |
|---|---|---|
| Local time | 12:39 | 11:39 |
| 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 | 06:58 |
| Sunset | 17:19 | 18:14 |
| Daylight | 11 h 53 min | 11 h 15 min |
| People on this clock | 342,188 | 170,714 |
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 Rancho Cucamonga, CA: common questions
How far behind San Jose is Rancho Cucamonga, CA?
Rancho Cucamonga 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 Rancho Cucamonga, CA?
At 9:00 AM in San Jose, clocks in Rancho Cucamonga show 8:00 AM.
If it is 6:00 PM in San Jose, what time is it in Rancho Cucamonga, CA?
At 6:00 PM in San Jose, clocks in Rancho Cucamonga show 5:00 PM.
Is there a time when both San Jose and Rancho Cucamonga, CA, are at work?
Yes: from 10:00 AM to 6:00 PM in San Jose (9:00 AM to 5:00 PM in Rancho Cucamonga), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Rancho Cucamonga, CA?
Until 1:00 AM in San Jose it is still the previous day in Rancho Cucamonga. The other way round, from 11:00 PM in Rancho Cucamonga it is already the next day in San Jose.
Is the time difference between San Jose and Rancho Cucamonga, CA, the same all year?
No. Only Rancho Cucamonga switches to summer time, so the gap changes twice a year. From November 1, 2026, Rancho Cucamonga will be 2 hours behind San Jose.
