Seattle, WA to St Thomas: time difference
St Thomas is 3 h ahead of Seattle, WA. 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.
Seattle, WA 09:40 9:40 AM St Thomas 12:40 12:40 PM You –:–
09:40 9:40 AM
Pacific Daylight Time · UTC-7
☀️ 07:32 · 🌙 18:19
12:40 12:40 PM
Atlantic Standard Time · UTC-4
☀️ 06:15 · 🌙 17:57
·
+3 h
St Thomas is 3 h ahead of Seattle, WA.
When you, Seattle, WA 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
🇺🇸 Seattle, WA
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
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 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Seattle, WA | 🇻🇮 St Thomas |
|---|---|---|
| Local time | 09:40 | 12:40 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Pacific Daylight Time | Atlantic Standard Time |
| UTC offset | UTC-7 | UTC-4 |
| Offset from Seattle, WA | — | +3 h |
| IANA zone | America/Los Angeles | America/St Thomas |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | Not observed |
| Sunrise | 07:32 | 06:15 |
| Sunset | 18:19 | 17:57 |
| Daylight | 10 h 47 min | 11 h 42 min |
| People on this clock | 737,015 | 20,000 |
Compare Seattle, WA with another city
More comparisons with Seattle, WA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seattle, WA and St Thomas: common questions
How many hours ahead of Seattle, WA, is St Thomas?
The clocks in St Thomas are 3 hours ahead of those in Seattle (UTC−4 and UTC−7).
What time is it in St Thomas when it is 9:00 AM in Seattle, WA?
When it is 9:00 AM in Seattle, it is 12:00 PM in St Thomas.
What time is it in St Thomas when it is 6:00 PM in Seattle, WA?
When it is 6:00 PM in Seattle, it is 9:00 PM in St Thomas.
Is there a time when both Seattle, WA, and St Thomas are at work?
Yes: from 9:00 AM to 3:00 PM in Seattle (12:00 PM to 6:00 PM in St Thomas), the working days (9:00 AM–6:00 PM) overlap.
From what time in Seattle, WA, is it tomorrow in St Thomas?
Once it is 9:00 PM in Seattle, the date in St Thomas has already changed. Until 3:00 AM in St Thomas, it is still the previous day in Seattle.
Is the time difference between Seattle, WA, and St Thomas the same all year?
No. Only Seattle switches to summer time, so the gap changes twice a year. From November 1, 2026, St Thomas will be 4 hours ahead of Seattle.
