Seattle to London Time

Seattle is 8 hours behind London.

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Tap a city name to search and change it (partial names work). Drag the timeline (12 hours in view, scrolls forever). Keyboard: ← → , PgUp / PgDn 1 hour, Home = now.

Seattle time to London time

Seattle is 8 hours behind London. When it is 9:00 AM in Seattle, USA, it is 5:00 PM in London, UK. Standard 9 AM to 6 PM working hours overlap for 1 hour: 9:00 AM to 10:00 AM in Seattle (5:00 PM to 6:00 PM in London).

Time difference

8 hours (Seattle behind). Seattle uses PDT; London uses BST.

Working-hours overlap

1 hour of shared 9 AM to 6 PM hours.

Daylight saving

Next change: Sun, Oct 25, 2026 (London).

Seattle to London time conversion table

Times for Fri, Oct 9, 2026. Highlighted rows fall within 9 AM to 6 PM in both cities. Drag the live converter above for any other date.
Seattle (PDT)London (BST)
12:00 AM8:00 AM
1:00 AM9:00 AM
2:00 AM10:00 AM
3:00 AM11:00 AM
4:00 AM12:00 PM
5:00 AM1:00 PM
6:00 AM2:00 PM
7:00 AM3:00 PM
8:00 AM4:00 PM
9:00 AM5:00 PM
10:00 AM6:00 PM
11:00 AM7:00 PM
12:00 PM8:00 PM
1:00 PM9:00 PM
2:00 PM10:00 PM
3:00 PM11:00 PM
4:00 PM12:00 AM (next day)
5:00 PM1:00 AM (next day)
6:00 PM2:00 AM (next day)
7:00 PM3:00 AM (next day)
8:00 PM4:00 AM (next day)
9:00 PM5:00 AM (next day)
10:00 PM6:00 AM (next day)
11:00 PM7:00 AM (next day)

Daylight saving time

On Sun, Oct 25, 2026, London switches from BST to GMT, so the difference becomes 7 hours (Seattle behind). On Sun, Nov 1, 2026, Seattle switches from PDT to PST, so the difference becomes 8 hours (Seattle behind). On Sun, Mar 14, 2027, Seattle switches from PST to PDT, so the difference becomes 7 hours (Seattle behind). On Sun, Mar 28, 2027, London switches from GMT to BST, so the difference becomes 8 hours (Seattle behind).

How to use the meeting time converter

  1. Select either city name and search by city, time zone, abbreviation, or UTC offset.
  2. Drag the horizontal timeline, or use the arrow and Page Up/Page Down keys, to choose a moment.
  3. Read the matching time and date for both locations and use the color bands to compare working hours.

Frequently asked questions

What is the time difference between Seattle and London?

Seattle is 8 hours behind London. Seattle currently uses PDT and London uses BST.

When it is 9 AM in Seattle, what time is it in London?

It is 5:00 PM in London.

What is the best time for a meeting between Seattle and London?

Standard 9 AM to 6 PM working hours overlap for 1 hour: 9:00 AM to 10:00 AM in Seattle (5:00 PM to 6:00 PM in London).

Does daylight saving time affect Seattle and London?

On Sun, Oct 25, 2026, London switches from BST to GMT, so the difference becomes 7 hours (Seattle behind). On Sun, Nov 1, 2026, Seattle switches from PDT to PST, so the difference becomes 8 hours (Seattle behind). On Sun, Mar 14, 2027, Seattle switches from PST to PDT, so the difference becomes 7 hours (Seattle behind). On Sun, Mar 28, 2027, London switches from GMT to BST, so the difference becomes 8 hours (Seattle behind).

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