Lisbon to St Thomas: time difference
St Thomas 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 15:42 3:42 PM St Thomas 10:42 10:42 AM You –:–
15:42 3:42 PM
Western European Summer Time · UTC+1
☀️ 07:48 · 🌙 18:57
10:42 10:42 AM
Atlantic Standard Time · UTC-4
☀️ 06:15 · 🌙 17:57
·
−5 h
St Thomas is 5 h behind Lisbon.
When you, Lisbon and St Thomas 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
🇻🇮 St Thomas
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 | 🇻🇮 St Thomas |
|---|---|---|
| Local time | 15:42 | 10:42 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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/St Thomas |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:48 | 06:15 |
| Sunset | 18:57 | 17:57 |
| Daylight | 11 h 9 min | 11 h 42 min |
| People on this clock | 545,923 | 20,000 |
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 St Thomas: common questions
How far behind Lisbon is St Thomas?
St Thomas is 5 hours behind Lisbon: UTC−4 against UTC+1.
If it is 9:00 AM in Lisbon, what time is it in St Thomas?
At 9:00 AM in Lisbon, clocks in St Thomas show 4:00 AM.
If it is 6:00 PM in Lisbon, what time is it in St Thomas?
At 6:00 PM in Lisbon, clocks in St Thomas show 1:00 PM.
When do working hours in Lisbon and in St Thomas 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 St Thomas.
When is it still the previous day in St Thomas?
Until 5:00 AM in Lisbon it is still the previous day in St Thomas. The other way round, from 7:00 PM in St Thomas it is already the next day in Lisbon.
Does the time gap between Lisbon and St Thomas change during the year?
Yes – daylight saving time is used in Lisbon but not in St Thomas. From October 25, 2026, St Thomas will be 4 hours behind Lisbon.
