Lisbon to Portsmouth: time difference
Portsmouth is 5 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 12:57 12:57 PM Portsmouth 07:57 7:57 AM You –:–
12:57 12:57 PM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:07
07:57 7:57 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
·
−5 h
Portsmouth is 5 h behind Lisbon.
When you, Lisbon and Portsmouth 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
🇩🇲 Portsmouth
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 17 5 PM 18 6 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇩🇲 Portsmouth |
|---|---|---|
| Local time | 12:57 | 07:57 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Western European Summer Time | Atlantic Standard Time |
| UTC offset | UTC+1 | UTC-4 |
| Offset from Lisbon | — | −5 h |
| IANA zone | Europe/Lisbon | America/Dominica |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:41 | 05:57 |
| Sunset | 19:07 | 17:50 |
| Daylight | 11 h 26 min | 11 h 52 min |
| People on this clock | 545,923 | 3,633 |
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 Portsmouth: common questions
What is the time difference between Lisbon and Portsmouth?
Portsmouth is 5 hours behind: it uses UTC−4, while Lisbon is on UTC+1.
What time is it in Portsmouth at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in Portsmouth it is 4:00 AM at that moment.
What time is it in Portsmouth when it is 6:00 PM in Lisbon?
When it is 6:00 PM in Lisbon, it is 1:00 PM in Portsmouth.
When do working hours in Lisbon and in Portsmouth overlap?
Working hours (9:00 AM–6:00 PM) overlap from 2:00 PM to 6:00 PM in Lisbon, which is 9:00 AM to 1:00 PM in Portsmouth.
When does the date change in Portsmouth compared with Lisbon?
The new day starts in Portsmouth later: until 5:00 AM in Lisbon, it is still the previous day there. From 7:00 PM in Portsmouth, Lisbon is already on the next day.
Is the time difference between Lisbon and Portsmouth the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Portsmouth will be 4 hours behind Lisbon.
