O'Fallon, IL to Lisbon: time difference
Lisbon is 6 h ahead of O'Fallon, IL. Live clocks for both, the working hours they share, and how each one sits against your own time.
+6 h
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 Lisbon 00:28 12:28 AM You –:–
18:28 6:28 PM
Central Daylight Time · UTC-5
☀️ 07:15 · 🌙 18:15
00:28 12:28 AM
Western European Summer Time · UTC+1
☀️ 07:52 · 🌙 18:52
·
+6 h
Lisbon is 6 h ahead of O'Fallon, IL.
When you, O'Fallon, IL and Lisbon 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
🇵🇹 Lisbon
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 2 2 AM 3 3 AM 4 4 AM 5 5 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 O'Fallon, IL | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 18:28 | 00:28 |
| Local date | Wednesday, October 21, 2026 | Thursday, October 22, 2026 |
| Time zone | Central Daylight Time | Western European Summer Time |
| UTC offset | UTC-5 | UTC+1 |
| Offset from O'Fallon, IL | — | +6 h |
| IANA zone | America/Chicago | Europe/Lisbon |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 07:15 | 07:52 |
| Sunset | 18:15 | 18:52 |
| Daylight | 10 h 59 min | 10 h 59 min |
| People on this clock | 94,074 | 545,923 |
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 Lisbon: common questions
How many hours ahead of O'Fallon, IL, is Lisbon?
The clocks in Lisbon are 6 hours ahead of those in O'Fallon (UTC+1 and UTC−5).
What time is it in Lisbon when it is 9:00 AM in O'Fallon, IL?
When it is 9:00 AM in O'Fallon, it is 3:00 PM in Lisbon.
What time is it in Lisbon at the end of the working day in O'Fallon, IL?
The working day in O'Fallon ends at 6:00 PM; in Lisbon it is 12:00 AM (the next day) at that moment.
Is there a time when both O'Fallon, IL, and Lisbon are at work?
Yes: from 9:00 AM to 12:00 PM in O'Fallon (3:00 PM to 6:00 PM in Lisbon), the working days (9:00 AM–6:00 PM) overlap.
From what time in O'Fallon, IL, is it tomorrow in Lisbon?
Once it is 6:00 PM in O'Fallon, the date in Lisbon has already changed. Until 6:00 AM in Lisbon, it is still the previous day in O'Fallon.
Is the time difference between O'Fallon, IL, and Lisbon the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From October 25, 2026, Lisbon will be 5 hours ahead of O'Fallon.
