Lisbon to Casper, WY: time difference
Casper, WY 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 11:46 11:46 AM Casper, WY 04:46 4:46 AM You –:–
11:46 11:46 AM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
04:46 4:46 AM
Mountain Daylight Time · UTC-6
☀️ 07:23 · 🌙 18:19
·
−7 h
Casper, WY is 7 h behind Lisbon.
When you, Lisbon and Casper, WY 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
🇺🇸 Casper, WY
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 | 🇺🇸 Casper, WY |
|---|---|---|
| Local time | 11:46 | 04:46 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 07:49 | 07:23 |
| Sunset | 18:56 | 18:19 |
| Daylight | 11 h 7 min | 10 h 57 min |
| People on this clock | 545,923 | 58,763 |
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 Casper, WY: common questions
What is the time difference between Lisbon and Casper, WY?
Casper is 7 hours behind: it uses UTC−6, while Lisbon is on UTC+1.
If it is 9:00 AM in Lisbon, what time is it in Casper, WY?
At 9:00 AM in Lisbon, clocks in Casper show 2:00 AM.
If it is 6:00 PM in Lisbon, what time is it in Casper, WY?
At 6:00 PM in Lisbon, clocks in Casper show 11:00 AM.
Is there a time when both Lisbon and Casper, WY, are at work?
Yes: from 4:00 PM to 6:00 PM in Lisbon (9:00 AM to 11:00 AM in Casper), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Casper, WY, compared with Lisbon?
The new day starts in Casper later: until 7:00 AM in Lisbon, it is still the previous day there. From 5:00 PM in Casper, Lisbon is already on the next day.
Does the time difference between Lisbon and Casper, WY, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Casper will be 6 hours behind Lisbon.
