Casper, WY to Lisbon: time difference
Lisbon is 7 h ahead of Casper, WY. 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.
Casper, WY 09:59 9:59 AM Lisbon 16:59 4:59 PM You –:–
09:59 9:59 AM
Mountain Daylight Time · UTC-6
☀️ 07:23 · 🌙 18:19
16:59 4:59 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
·
+7 h
Lisbon is 7 h ahead of Casper, WY.
When you, Casper, WY 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
🇺🇸 Casper, WY
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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Casper, WY | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 09:59 | 16:59 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Mountain Daylight Time | Western European Summer Time |
| UTC offset | UTC-6 | UTC+1 |
| Offset from Casper, WY | — | +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 | 07:23 | 07:49 |
| Sunset | 18:19 | 18:56 |
| Daylight | 10 h 57 min | 11 h 7 min |
| People on this clock | 58,763 | 545,923 |
Compare Casper, WY with another city
More comparisons with Casper, WY: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Casper, WY and Lisbon: common questions
How many hours ahead of Casper, WY, is Lisbon?
The clocks in Lisbon are 7 hours ahead of those in Casper (UTC+1 and UTC−6).
If it is 9:00 AM in Casper, WY, what time is it in Lisbon?
At 9:00 AM in Casper, clocks in Lisbon show 4:00 PM.
What time is it in Lisbon at the end of the working day in Casper, WY?
The working day in Casper ends at 6:00 PM; in Lisbon it is 1:00 AM (the next day) at that moment.
When do working hours in Casper, WY, and in Lisbon overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 11:00 AM in Casper, which is 4:00 PM to 6:00 PM in Lisbon.
From what time in Casper, WY, is it tomorrow in Lisbon?
Once it is 5:00 PM in Casper, the date in Lisbon has already changed. Until 7:00 AM in Lisbon, it is still the previous day in Casper.
Is the time difference between Casper, WY, 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 6 hours ahead of Casper.
