Lisbon to Great Falls, MT: time difference
Great Falls, MT is 7 h behind Lisbon. 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.
Lisbon 05:07 5:07 AM Great Falls, MT 22:07 10:07 PM You –:–
05:07 5:07 AM
Western European Summer Time · UTC+1
☀️ 07:42 · 🌙 19:06
22:07 10:07 PM
Mountain Daylight Time · UTC-6
☀️ 07:37 · 🌙 18:48
·
−7 h
Great Falls, MT is 7 h behind Lisbon.
When you, Lisbon and Great Falls, MT are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇹 Lisbon
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
🇺🇸 Great Falls, MT
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇺🇸 Great Falls, MT |
|---|---|---|
| Local time | 05:07 | 22:07 |
| Local date | Sunday, October 11, 2026 | Saturday, October 10, 2026 |
| Time zone | Western European Summer Time | Mountain Daylight Time |
| UTC offset | UTC+1 | UTC-6 |
| Offset from Lisbon | — | −7 h |
| IANA zone | Europe/Lisbon | America/Denver |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 07:42 | 07:37 |
| Sunset | 19:06 | 18:48 |
| Daylight | 11 h 24 min | 11 h 11 min |
| People on this clock | 545,923 | 60,442 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and Great Falls, MT: common questions
What is the time difference between Lisbon and Great Falls, MT?
Great Falls is 7 hours behind: it uses UTC−6, while Lisbon is on UTC+1.
What time is it in Great Falls, MT, when it is 9:00 AM in Lisbon?
When it is 9:00 AM in Lisbon, it is 2:00 AM in Great Falls.
If it is 6:00 PM in Lisbon, what time is it in Great Falls, MT?
At 6:00 PM in Lisbon, clocks in Great Falls show 11:00 AM.
When do working hours in Lisbon and in Great Falls, MT, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 4:00 PM to 6:00 PM in Lisbon, which is 9:00 AM to 11:00 AM in Great Falls.
When is it still the previous day in Great Falls, MT?
Until 7:00 AM in Lisbon it is still the previous day in Great Falls. The other way round, from 5:00 PM in Great Falls it is already the next day in Lisbon.
Does the time difference between Lisbon and Great Falls, MT, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Great Falls will be 6 hours behind Lisbon.
