Lisbon to Portsmouth, NH: time difference
Portsmouth, NH 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 09:11 9:11 AM Portsmouth, NH 04:11 4:11 AM You –:–
09:11 9:11 AM
Western European Summer Time · UTC+1
☀️ 07:50 · 🌙 18:54
04:11 4:11 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 17:55
·
−5 h
Portsmouth, NH is 5 h behind Lisbon.
When you, Lisbon and Portsmouth, NH 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, NH
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, NH |
|---|---|---|
| Local time | 09:11 | 04:11 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Western European Summer Time | Eastern Daylight Time |
| UTC offset | UTC+1 | UTC-4 |
| Offset from Lisbon | — | −5 h |
| IANA zone | Europe/Lisbon | America/New York |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 07:50 | 07:02 |
| Sunset | 18:54 | 17:55 |
| Daylight | 11 h 4 min | 10 h 54 min |
| People on this clock | 545,923 | 95,535 |
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, NH: common questions
How many hours behind Lisbon is Portsmouth, NH?
The clocks in Portsmouth are 5 hours behind those in Lisbon (UTC−4 and UTC+1).
If it is 9:00 AM in Lisbon, what time is it in Portsmouth, NH?
At 9:00 AM in Lisbon, clocks in Portsmouth show 4:00 AM.
If it is 6:00 PM in Lisbon, what time is it in Portsmouth, NH?
At 6:00 PM in Lisbon, clocks in Portsmouth show 1:00 PM.
When is a good time to call Portsmouth, NH, from Lisbon?
Between 2:00 PM and 6:00 PM in Lisbon – that is 9:00 AM to 1:00 PM in Portsmouth – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Lisbon is it still yesterday in Portsmouth, NH?
Before 5:00 AM in Lisbon, the date in Portsmouth has not changed yet. From 7:00 PM in Portsmouth, it is already the next day in Lisbon.
Does the time gap between Lisbon and Portsmouth, NH, change during the year?
Yes, because the clocks in Lisbon and in Portsmouth change on different dates. Next change: from October 25, 2026, Portsmouth will be 4 hours behind Lisbon.
