Charlestown to Seattle, WA: time difference
Seattle, WA is 3 h behind Charlestown. 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.
Charlestown 10:16 10:16 AM Seattle, WA 07:16 7:16 AM You –:–
10:16 10:16 AM
Atlantic Standard Time · UTC-4
☀️ 06:03 · 🌙 17:53
07:16 7:16 AM
Pacific Daylight Time · UTC-7
☀️ 07:22 · 🌙 18:32
·
−3 h
Seattle, WA is 3 h behind Charlestown.
When you, Charlestown and Seattle, WA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇳 Charlestown
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
🇺🇸 Seattle, WA
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 19 7 PM 20 8 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇰🇳 Charlestown | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 10:16 | 07:16 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from Charlestown | — | −3 h |
| IANA zone | America/St Kitts | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 06:03 | 07:22 |
| Sunset | 17:53 | 18:32 |
| Daylight | 11 h 51 min | 11 h 11 min |
| People on this clock | 1,500 | 737,015 |
Compare Charlestown with another city
More comparisons with Charlestown: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Charlestown and Seattle, WA: common questions
What is the time difference between Charlestown and Seattle, WA?
Seattle is 3 hours behind: it uses UTC−7, while Charlestown is on UTC−4.
If it is 9:00 AM in Charlestown, what time is it in Seattle, WA?
At 9:00 AM in Charlestown, clocks in Seattle show 6:00 AM.
What time is it in Seattle, WA, when it is 6:00 PM in Charlestown?
When it is 6:00 PM in Charlestown, it is 3:00 PM in Seattle.
When is a good time to call Seattle, WA, from Charlestown?
Between 12:00 PM and 6:00 PM in Charlestown – that is 9:00 AM to 3:00 PM in Seattle – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Charlestown is it still yesterday in Seattle, WA?
Before 3:00 AM in Charlestown, the date in Seattle has not changed yet. From 9:00 PM in Seattle, it is already the next day in Charlestown.
Is the time difference between Charlestown and Seattle, WA, the same all year?
No. Only Seattle switches to summer time, so the gap changes twice a year. From November 1, 2026, Seattle will be 4 hours behind Charlestown.
