Seattle, WA to Portsmouth: time difference
Portsmouth 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 05:07 5:07 AM Portsmouth 08:07 8:07 AM You –:–
05:07 5:07 AM
Pacific Daylight Time · UTC-7
☀️ 07:22 · 🌙 18:32
08:07 8:07 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
·
+3 h
Portsmouth is 3 h ahead of Seattle, WA.
When you, Seattle, WA and Portsmouth 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
🇩🇲 Portsmouth
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 | 🇩🇲 Portsmouth |
|---|---|---|
| Local time | 05:07 | 08:07 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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/Dominica |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | Not observed |
| Sunrise | 07:22 | 05:57 |
| Sunset | 18:32 | 17:50 |
| Daylight | 11 h 11 min | 11 h 52 min |
| People on this clock | 737,015 | 3,633 |
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 Portsmouth: common questions
How far ahead of Seattle, WA, is Portsmouth?
Portsmouth is 3 hours ahead of Seattle: UTC−4 against UTC−7.
What time is it in Portsmouth when it is 9:00 AM in Seattle, WA?
When it is 9:00 AM in Seattle, it is 12:00 PM in Portsmouth.
What time is it in Portsmouth at the end of the working day in Seattle, WA?
The working day in Seattle ends at 6:00 PM; in Portsmouth it is 9:00 PM at that moment.
When is a good time to call Portsmouth from Seattle, WA?
Between 9:00 AM and 3:00 PM in Seattle – that is 12:00 PM to 6:00 PM in Portsmouth – both places are within working hours (9:00 AM–6:00 PM).
From what time in Seattle, WA, is it tomorrow in Portsmouth?
Once it is 9:00 PM in Seattle, the date in Portsmouth has already changed. Until 3:00 AM in Portsmouth, it is still the previous day in Seattle.
Does the time gap between Seattle, WA, and Portsmouth change during the year?
Yes – daylight saving time is used in Seattle but not in Portsmouth. From November 1, 2026, Portsmouth will be 4 hours ahead of Seattle.
