Seattle, WA to St.Catharines: time difference
St.Catharines 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 00:33 12:33 AM St.Catharines 03:33 3:33 AM You –:–
00:33 12:33 AM
Pacific Daylight Time · UTC-7
☀️ 07:36 · 🌙 18:13
03:33 3:33 AM
Eastern Daylight Time · UTC-4
☀️ 07:38 · 🌙 18:26
·
+3 h
St.Catharines is 3 h ahead of Seattle, WA.
When you, Seattle, WA and St.Catharines 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.Catharines
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.Catharines |
|---|---|---|
| Local time | 00:33 | 03:33 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Pacific Daylight Time | Eastern Daylight Time |
| UTC offset | UTC-7 | UTC-4 |
| Offset from Seattle, WA | — | +3 h |
| IANA zone | America/Los Angeles | America/Toronto |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 07:36 | 07:38 |
| Sunset | 18:13 | 18:26 |
| Daylight | 10 h 37 min | 10 h 48 min |
| People on this clock | 737,015 | 133,113 |
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.Catharines: common questions
How far ahead of Seattle, WA, is St.Catharines?
St.Catharines is 3 hours ahead of Seattle: UTC−4 against UTC−7.
What time is it in St.Catharines when it is 9:00 AM in Seattle, WA?
When it is 9:00 AM in Seattle, it is 12:00 PM in St.Catharines.
What time is it in St.Catharines at the end of the working day in Seattle, WA?
The working day in Seattle ends at 6:00 PM; in St.Catharines it is 9:00 PM at that moment.
When is a good time to call St.Catharines from Seattle, WA?
Between 9:00 AM and 3:00 PM in Seattle – that is 12:00 PM to 6:00 PM in St.Catharines – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in St.Catharines?
From 9:00 PM in Seattle, WA, it is already the next day in St.Catharines. The other way round, until 3:00 AM in St.Catharines it is still the previous day in Seattle.
Does the time difference between Seattle, WA, and St.Catharines change?
No. The clocks in Seattle and in St.Catharines change on the same dates, so the difference stays 3 hours.
