O'Fallon, IL to San Jose: time difference
San Jose is 1 h behind O'Fallon, IL. 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.
O'Fallon, IL 19:06 7:06 PM San Jose 18:06 6:06 PM You –:–
19:06 7:06 PM
Central Daylight Time · UTC-5
☀️ 07:15 · 🌙 18:15
18:06 6:06 PM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:17
·
−1 h
San Jose is 1 h behind O'Fallon, IL.
When you, O'Fallon, IL and San Jose are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 O'Fallon, IL
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 Jose
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
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Time zones side by side
| Detail | 🇺🇸 O'Fallon, IL | 🇨🇷 San Jose |
|---|---|---|
| Local time | 19:06 | 18:06 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Central Daylight Time | Central Standard Time |
| UTC offset | UTC-5 | UTC-6 |
| Offset from O'Fallon, IL | — | −1 h |
| IANA zone | America/Chicago | America/Costa Rica |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:15 | 05:26 |
| Sunset | 18:15 | 17:17 |
| Daylight | 10 h 59 min | 11 h 52 min |
| People on this clock | 94,074 | 342,188 |
Compare O'Fallon, IL with another city
More comparisons with O'Fallon, IL: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
O'Fallon, IL and San Jose: common questions
What is the time difference between O'Fallon, IL, and San Jose?
San Jose is 1 hour behind: it uses UTC−6, while O'Fallon is on UTC−5.
What time is it in San Jose when it is 9:00 AM in O'Fallon, IL?
When it is 9:00 AM in O'Fallon, it is 8:00 AM in San Jose.
What time is it in San Jose when it is 6:00 PM in O'Fallon, IL?
When it is 6:00 PM in O'Fallon, it is 5:00 PM in San Jose.
Is there a time when both O'Fallon, IL, and San Jose are at work?
Yes: from 10:00 AM to 6:00 PM in O'Fallon (9:00 AM to 5:00 PM in San Jose), the working days (9:00 AM–6:00 PM) overlap.
Until what time in O'Fallon, IL, is it still yesterday in San Jose?
Before 1:00 AM in O'Fallon, the date in San Jose has not changed yet. From 11:00 PM in San Jose, it is already the next day in O'Fallon.
Is the time difference between O'Fallon, IL, and San Jose the same all year?
No. Only O'Fallon switches to summer time, so the gap changes twice a year. From November 1, 2026, San Jose and O'Fallon will have the same time.
