Seattle is usually 3 hours behind Toronto. Both observe daylight saving time, so the difference shifts by an hour for a few weeks around the spring and autumn changeovers.

SeattleToronto

Sunrise 7:24 AMSunset 6:28 PM(local)

Sunrise 7:29 AMSunset 6:41 PM(local)

Seattle: daylight saving timeNow UTC-7 PDT. Next change: November 1, 2026 β€” clocks go back 1 hour.
Public holiday in Toronto: Thanksgiving (Oct 12)
Toronto: daylight saving timeNow UTC-4. Next change: November 1, 2026 β€” clocks go back 1 hour.
SeattleUTC-7PDT
TorontoUTC-4

πŸ‡ΊπŸ‡Έ Seattle

Dialing code+1
Population780,995
Coordinates47.61Β°N, 122.33Β°W
Elevation56 m

πŸ‡¨πŸ‡¦ Toronto

Dialing code+1
Population2,794,356
Coordinates43.71Β°N, 79.40Β°W
Elevation161 m

No comfortable common working hours β€” these cities barely overlap.

Working hours assumed 9:00–18:00.

Frequently asked questions

What is the time difference between Seattle and Toronto?
Seattle is 3 hours behind Toronto. Use the side-by-side clocks and the day/night strips above to convert any hour between them.
When is the best time to call between Seattle and Toronto?
There is no hour when standard working hours (9:00–18:00) overlap in both Seattle and Toronto, so any call falls outside business hours for at least one side.
Why does the time difference between Seattle and Toronto change?
Because at least one of Seattle and Toronto observes daylight saving time, the difference shifts by an hour when one city changes its clocks and the other has not yet (or does not).