San Jose to Rock Island, IL: time difference
Rock Island, IL is 1 h ahead of 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 15:22 3:22 PM Rock Island, IL 16:22 4:22 PM You –:–
15:22 3:22 PM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:18
16:22 4:22 PM
Central Daylight Time · UTC-5
☀️ 07:20 · 🌙 18:15
·
+1 h
Rock Island, IL is 1 h ahead of San Jose.
When you, San Jose and Rock Island, IL 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
🇺🇸 Rock Island, IL
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 San Jose | 🇺🇸 Rock Island, IL |
|---|---|---|
| Local time | 15:22 | 16:22 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central Standard Time | Central Daylight Time |
| UTC offset | UTC-6 | UTC-5 |
| Offset from San Jose | — | +1 h |
| IANA zone | America/Costa Rica | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:26 | 07:20 |
| Sunset | 17:18 | 18:15 |
| Daylight | 11 h 52 min | 10 h 55 min |
| People on this clock | 342,188 | 37,108 |
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 Rock Island, IL: common questions
How many hours ahead of San Jose is Rock Island, IL?
The clocks in Rock Island are 1 hour ahead of those in San Jose (UTC−5 and UTC−6).
If it is 9:00 AM in San Jose, what time is it in Rock Island, IL?
At 9:00 AM in San Jose, clocks in Rock Island show 10:00 AM.
What time is it in Rock Island, IL, when it is 6:00 PM in San Jose?
When it is 6:00 PM in San Jose, it is 7:00 PM in Rock Island.
When is a good time to call Rock Island, IL, from San Jose?
Between 9:00 AM and 5:00 PM in San Jose – that is 10:00 AM to 6:00 PM in Rock Island – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Rock Island, IL?
From 11:00 PM in San Jose it is already the next day in Rock Island. The other way round, until 1:00 AM in Rock Island it is still the previous day in San Jose.
Does the time gap between San Jose and Rock Island, IL, change during the year?
Yes – daylight saving time is used in Rock Island but not in San Jose. From November 1, 2026, Rock Island and San Jose will have the same time.
