Lisbon to Somerville, MA: time difference
Somerville, MA 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 16:55 4:55 PM Somerville, MA 11:55 11:55 AM You –:–
16:55 4:55 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
11:55 11:55 AM
Eastern Daylight Time · UTC-4
☀️ 07:01 · 🌙 17:59
·
−5 h
Somerville, MA is 5 h behind Lisbon.
When you, Lisbon and Somerville, MA 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
🇺🇸 Somerville, MA
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 | 🇺🇸 Somerville, MA |
|---|---|---|
| Local time | 16:55 | 11:55 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 07:49 | 07:01 |
| Sunset | 18:56 | 17:59 |
| Daylight | 11 h 7 min | 10 h 58 min |
| People on this clock | 545,923 | 75,754 |
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 Somerville, MA: common questions
How many hours behind Lisbon is Somerville, MA?
The clocks in Somerville are 5 hours behind those in Lisbon (UTC−4 and UTC+1).
What time is it in Somerville, MA, when it is 9:00 AM in Lisbon?
When it is 9:00 AM in Lisbon, it is 4:00 AM in Somerville.
If it is 6:00 PM in Lisbon, what time is it in Somerville, MA?
At 6:00 PM in Lisbon, clocks in Somerville show 1:00 PM.
When do working hours in Lisbon and in Somerville, MA, 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 Somerville.
Until what time in Lisbon is it still yesterday in Somerville, MA?
Before 5:00 AM in Lisbon, the date in Somerville has not changed yet. From 7:00 PM in Somerville, it is already the next day in Lisbon.
Does the time difference between Lisbon and Somerville, MA, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Somerville will be 4 hours behind Lisbon.
