Great Falls, MT to Lisbon: time difference
Lisbon is 7 h ahead of Great Falls, MT. Live clocks for both, the working hours they share, and how each one sits against your own time.
+7 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Great Falls, MT 21:11 9:11 PM Lisbon 04:11 4:11 AM You –:–
21:11 9:11 PM
Mountain Daylight Time · UTC-6
☀️ 07:37 · 🌙 18:48
04:11 4:11 AM
Western European Summer Time · UTC+1
☀️ 07:42 · 🌙 19:06
·
+7 h
Lisbon is 7 h ahead of Great Falls, MT.
When you, Great Falls, MT 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
🇺🇸 Great Falls, MT
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
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 6 6 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Great Falls, MT | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 21:11 | 04:11 |
| Local date | Saturday, October 10, 2026 | Sunday, October 11, 2026 |
| Time zone | Mountain Daylight Time | Western European Summer Time |
| UTC offset | UTC-6 | UTC+1 |
| Offset from Great Falls, MT | — | +7 h |
| IANA zone | America/Denver | Europe/Lisbon |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 07:37 | 07:42 |
| Sunset | 18:48 | 19:06 |
| Daylight | 11 h 11 min | 11 h 24 min |
| People on this clock | 60,442 | 545,923 |
Compare Great Falls, MT with another city
More comparisons with Great Falls, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Great Falls, MT and Lisbon: common questions
How many hours ahead of Great Falls, MT, is Lisbon?
The clocks in Lisbon are 7 hours ahead of those in Great Falls (UTC+1 and UTC−6).
What time is it in Lisbon at the start of the working day in Great Falls, MT?
The working day in Great Falls starts at 9:00 AM; in Lisbon it is 4:00 PM at that moment.
What time is it in Lisbon at the end of the working day in Great Falls, MT?
The working day in Great Falls ends at 6:00 PM; in Lisbon it is 1:00 AM (the next day) at that moment.
Is there a time when both Great Falls, MT, and Lisbon are at work?
Yes: from 9:00 AM to 11:00 AM in Great Falls (4:00 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 5:00 PM in Great Falls, MT, it is already the next day in Lisbon. The other way round, until 7:00 AM in Lisbon it is still the previous day in Great Falls.
Does the time gap between Great Falls, MT, and Lisbon change during the year?
Yes, because the clocks in Great Falls and in Lisbon change on different dates. Next change: from October 25, 2026, Lisbon will be 6 hours ahead of Great Falls.
