St.Catharines to Seattle, WA: time difference
Seattle, WA is 3 h behind St.Catharines. 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.
St.Catharines 02:48 2:48 AM Seattle, WA 23:48 11:48 PM You –:–
02:48 2:48 AM
Eastern Daylight Time · UTC-4
☀️ 07:38 · 🌙 18:26
23:48 11:48 PM
Pacific Daylight Time · UTC-7
☀️ 07:36 · 🌙 18:13
·
−3 h
Seattle, WA is 3 h behind St.Catharines.
When you, St.Catharines 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
🇨🇦 St.Catharines
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
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Time zones side by side
| Detail | 🇨🇦 St.Catharines | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 02:48 | 23:48 |
| Local date | Wednesday, October 21, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from St.Catharines | — | −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 | 07:38 | 07:36 |
| Sunset | 18:26 | 18:13 |
| Daylight | 10 h 48 min | 10 h 37 min |
| People on this clock | 133,113 | 737,015 |
Compare St.Catharines with another city
More comparisons with St.Catharines: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
St.Catharines and Seattle, WA: common questions
What is the time difference between St.Catharines and Seattle, WA?
Seattle is 3 hours behind: it uses UTC−7, while St.Catharines is on UTC−4.
What time is it in Seattle, WA, when it is 9:00 AM in St.Catharines?
When it is 9:00 AM in St.Catharines, it is 6:00 AM in Seattle.
What time is it in Seattle, WA, at the end of the working day in St.Catharines?
The working day in St.Catharines ends at 6:00 PM; in Seattle it is 3:00 PM at that moment.
Is there a time when both St.Catharines and Seattle, WA, are at work?
Yes: from 12:00 PM to 6:00 PM in St.Catharines (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 St.Catharines?
The new day starts in Seattle later: until 3:00 AM in St.Catharines, it is still the previous day there. From 9:00 PM in Seattle, St.Catharines is already on the next day.
Is the time difference between St.Catharines 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.
