Sarnia to Seattle, WA: time difference
Seattle, WA is 3 h behind Sarnia. 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.
Sarnia 21:31 9:31 PM Seattle, WA 18:31 6:31 PM You –:–
21:31 9:31 PM
Eastern Daylight Time · UTC-4
☀️ 07:42 · 🌙 18:50
18:31 6:31 PM
Pacific Daylight Time · UTC-7
☀️ 07:27 · 🌙 18:25
·
−3 h
Seattle, WA is 3 h behind Sarnia.
When you, Sarnia 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
🇨🇦 Sarnia
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
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Time zones side by side
| Detail | 🇨🇦 Sarnia | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 21:31 | 18:31 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from Sarnia | — | −3 h |
| IANA zone | America/Toronto | America/Los Angeles |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:42 | 07:27 |
| Sunset | 18:50 | 18:25 |
| Daylight | 11 h 8 min | 10 h 57 min |
| People on this clock | 71,594 | 737,015 |
Compare Sarnia with another city
More comparisons with Sarnia: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sarnia and Seattle, WA: common questions
What is the time difference between Sarnia and Seattle, WA?
Seattle is 3 hours behind: it uses UTC−7, while Sarnia is on UTC−4.
What time is it in Seattle, WA, when it is 9:00 AM in Sarnia?
When it is 9:00 AM in Sarnia, it is 6:00 AM in Seattle.
What time is it in Seattle, WA, when it is 6:00 PM in Sarnia?
When it is 6:00 PM in Sarnia, it is 3:00 PM in Seattle.
Is there a time when both Sarnia and Seattle, WA, are at work?
Yes: from 12:00 PM to 6:00 PM in Sarnia (9:00 AM to 3:00 PM in Seattle), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Seattle, WA, compared with Sarnia?
The new day starts in Seattle later: until 3:00 AM in Sarnia, it is still the previous day there. From 9:00 PM in Seattle, Sarnia is already on the next day.
Is the time difference between Sarnia and Seattle, WA, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 3 hours.
