Lisbon to Sierra Vista, AZ: time difference
Sierra Vista, AZ is 8 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 11:57 11:57 AM Sierra Vista, AZ 03:57 3:57 AM You –:–
11:57 11:57 AM
Western European Summer Time · UTC+1
☀️ 07:53 · 🌙 18:50
03:57 3:57 AM
Mountain Standard Time · UTC-7
☀️ 06:30 · 🌙 17:43
·
−8 h
Sierra Vista, AZ is 8 h behind Lisbon.
When you, Lisbon and Sierra Vista, AZ 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
🇺🇸 Sierra Vista, AZ
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇺🇸 Sierra Vista, AZ |
|---|---|---|
| Local time | 11:57 | 03:57 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Western European Summer Time | Mountain Standard Time |
| UTC offset | UTC+1 | UTC-7 |
| Offset from Lisbon | — | −8 h |
| IANA zone | Europe/Lisbon | America/Phoenix |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:53 | 06:30 |
| Sunset | 18:50 | 17:43 |
| Daylight | 10 h 57 min | 11 h 13 min |
| People on this clock | 545,923 | 45,308 |
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 Sierra Vista, AZ: common questions
What is the time difference between Lisbon and Sierra Vista, AZ?
Sierra Vista is 8 hours behind: it uses UTC−7, while Lisbon is on UTC+1.
What time is it in Sierra Vista, AZ, at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in Sierra Vista it is 1:00 AM at that moment.
If it is 6:00 PM in Lisbon, what time is it in Sierra Vista, AZ?
At 6:00 PM in Lisbon, clocks in Sierra Vista show 10:00 AM.
When do working hours in Lisbon and in Sierra Vista, AZ, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 5:00 PM to 6:00 PM in Lisbon, which is 9:00 AM to 10:00 AM in Sierra Vista.
When is it still the previous day in Sierra Vista, AZ?
Until 8:00 AM in Lisbon it is still the previous day in Sierra Vista. The other way round, from 4:00 PM in Sierra Vista it is already the next day in Lisbon.
Is the time difference between Lisbon and Sierra Vista, AZ, the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Sierra Vista will be 7 hours behind Lisbon.
