Naperville, IL to Lisbon: time difference
Lisbon is 6 h ahead of Naperville, 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.
Naperville, IL 15:18 3:18 PM Lisbon 21:18 9:18 PM You –:–
15:18 3:18 PM
Central Daylight Time · UTC-5
☀️ 07:11 · 🌙 18:05
21:18 9:18 PM
Western European Summer Time · UTC+1
☀️ 07:51 · 🌙 18:53
·
+6 h
Lisbon is 6 h ahead of Naperville, IL.
When you, Naperville, 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
🇺🇸 Naperville, 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 | 🇺🇸 Naperville, IL | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 15:18 | 21:18 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central Daylight Time | Western European Summer Time |
| UTC offset | UTC-5 | UTC+1 |
| Offset from Naperville, 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 | 07:11 | 07:51 |
| Sunset | 18:05 | 18:53 |
| Daylight | 10 h 54 min | 11 h 2 min |
| People on this clock | 149,540 | 545,923 |
Compare Naperville, IL with another city
More comparisons with Naperville, IL: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Naperville, IL and Lisbon: common questions
How many hours ahead of Naperville, IL, is Lisbon?
The clocks in Lisbon are 6 hours ahead of those in Naperville (UTC+1 and UTC−5).
What time is it in Lisbon at the start of the working day in Naperville, IL?
The working day in Naperville starts at 9:00 AM; in Lisbon it is 3:00 PM at that moment.
What time is it in Lisbon at the end of the working day in Naperville, IL?
The working day in Naperville ends at 6:00 PM; in Lisbon it is 12:00 AM (the next day) at that moment.
Is there a time when both Naperville, IL, and Lisbon are at work?
Yes: from 9:00 AM to 12:00 PM in Naperville (3:00 PM to 6:00 PM in Lisbon), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Lisbon?
From 6:00 PM in Naperville, IL, it is already the next day in Lisbon. The other way round, until 6:00 AM in Lisbon it is still the previous day in Naperville.
Does the time difference between Naperville, IL, and Lisbon change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Lisbon will be 5 hours ahead of Naperville.
