O'Fallon, IL to Montevideo: time difference
Montevideo is 2 h ahead of 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 18:28 6:28 PM Montevideo 20:28 8:28 PM You –:–
18:28 6:28 PM
Central Daylight Time · UTC-5
☀️ 07:15 · 🌙 18:15
20:28 8:28 PM
Uruguay Standard Time · UTC-3
☀️ 05:56 · 🌙 19:05
·
+2 h
Montevideo is 2 h ahead of O'Fallon, IL.
When you, O'Fallon, IL and Montevideo 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
🇺🇾 Montevideo
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 1 1 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 O'Fallon, IL | 🇺🇾 Montevideo |
|---|---|---|
| Local time | 18:28 | 20:28 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Central Daylight Time | Uruguay Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from O'Fallon, IL | — | +2 h |
| IANA zone | America/Chicago | America/Montevideo |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:15 | 05:56 |
| Sunset | 18:15 | 19:05 |
| Daylight | 10 h 59 min | 13 h 9 min |
| People on this clock | 94,074 | 1,319,108 |
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 Montevideo: common questions
How far ahead of O'Fallon, IL, is Montevideo?
Montevideo is 2 hours ahead of O'Fallon: UTC−3 against UTC−5.
What time is it in Montevideo at the start of the working day in O'Fallon, IL?
The working day in O'Fallon starts at 9:00 AM; in Montevideo it is 11:00 AM at that moment.
What time is it in Montevideo at the end of the working day in O'Fallon, IL?
The working day in O'Fallon ends at 6:00 PM; in Montevideo it is 8:00 PM at that moment.
When do working hours in O'Fallon, IL, and in Montevideo overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 4:00 PM in O'Fallon, which is 11:00 AM to 6:00 PM in Montevideo.
When does the date change in Montevideo compared with O'Fallon, IL?
The new day starts in Montevideo earlier: at 10:00 PM in O'Fallon it is already midnight there. Until 2:00 AM in Montevideo, O'Fallon is still on the previous day.
Is the time difference between O'Fallon, IL, and Montevideo the same all year?
No. Only O'Fallon switches to summer time, so the gap changes twice a year. From November 1, 2026, Montevideo will be 3 hours ahead of O'Fallon.
