Time Difference Between Seattle and London

The time difference between Seattle and London is 8 hours. When it is 12:00 noon in Seattle, it is 20:00 in London. Seattle uses the America/Los_Angeles time zone (UTC-7), while London uses Europe/London (UTC+1).

Time Zone Details: Seattle vs London

Best Time to Schedule a Call

With a 8 hours gap, there is no standard business-hours overlap between Seattle and London. One party will need to adjust their schedule. Early mornings in London or late evenings in Seattle tend to be the most practical compromise.

Hour-by-Hour Time Conversion

Use this table to quickly convert any hour from Seattle time to London time. Rows highlighted in green indicate overlapping business hours in both cities.

Daylight Saving Time (DST) Impact

Both Seattle and London are currently observing daylight saving time. The current 8 hours difference reflects both cities' DST offsets. When one city switches back to standard time before the other, the gap will temporarily change by 1 hour.

Practical Tips for Seattle–London Scheduling

• Video calls: Rotate call times between early-morning and late-evening slots to share the scheduling burden fairly.
• Email and async work: Send messages at the end of your workday so they arrive at the start of theirs. With a 8 hours offset, replies will often land by your next morning.
• Flight arrivals: A direct flight between these cities can cross 8 time zones. Factor in jet lag recovery — most travelers need roughly one day per hour of time difference to fully adjust.
• Use UTC as a neutral reference when coordinating with three or more time zones at once.

Compare Seattle and London with Other Cities

From Seattle

From London

Frequently Asked Questions

What is the time difference between Seattle and London?

The time difference is 8 hours. London is 8 hours ahead of Seattle.

Does the time difference change during the year?

Yes. Both cities observe daylight saving time, but they may switch on different dates, causing the gap to shift by 1 hour temporarily.

When is the best time to call from Seattle to London?

There is no ideal window during standard business hours. Consider scheduling at the edges — early morning for the city that is ahead and late afternoon for the city that is behind.

How do I convert Seattle time to London time?

Add 8 hours to Seattle time to get London time. Use the hour-by-hour table above for a quick reference.

Related Pages

• Current time in Seattle — live clock, time zone details, DST status
• Current time in London — live clock, time zone details, DST status
• Time Difference Calculator — compare any two cities
• UTC-7 countries and cities
• UTC+1 countries and cities
• Current UTC Time
• All World Time Zones
• What Is a Time Zone?

For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.