Time difference between London and Seattle

Seattle is 8 hours behind London.

United Kingdom · Greenwich Mean Time

12:46 AM

Thursday, November 12, 2026

United States · Pacific Standard Time

4:46 PM

Wednesday, November 11, 2026

London to Seattle time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between London and Seattle?

Seattle is 8 hours behind London. London is on UTC+0 and Seattle is on UTC−8.

What time is it in Seattle when it is 9 AM in London?

When it is 9:00 AM in London, it is 1:00 AM in Seattle.

When is the best time to call Seattle from London?

The best time to call or meet is 5:00 PM–6:00 PM in London (9:00 AM–10:00 AM in Seattle), when both places are in normal office hours.

Which days are working days in both London and Seattle?

Both London and Seattle usually work Monday to Friday.

Does the time difference between London and Seattle change?

Yes. Because of daylight saving time, the difference changes on Sunday, March 14, 2027, when Seattle will be 7 hours behind London.

London is 8 hours ahead of Seattle. More: time in London · time in Seattle