Bilateral Time Zone Comparison
Seattle to London Time Difference
London is 8 hours ahead of Seattle. Locate morning Seattle / afternoon London overlap hours, compare live clocks, and schedule meetings easily.
Quick Answer: London is exactly 8 hours ahead of Seattle. When it is 12:00 PM (Noon) in Seattle, it is 8:00 PM in London. Outside standard daytime business hours.
Reference City
UTC -7Seattle
Saturday, October 10, 2026
9:21:42
America/Los_AngelesTarget City
UTC +1London
Saturday, October 10, 2026
5:21:42
Europe/LondonExact Difference Summary
London is 8 hours behind of Seattle
When it is 12:00 PM (Noon) in Seattle, it is 8 hours behind in London.
24-Hour Time Conversion & Business Overlap
Highlighted green rows represent mutual office hours (9:00 AM – 6:00 PM).
Shared Business Hours
Sea:00:00
Lon:08:00
Sea:01:00
Lon:09:00
Sea:02:00
Lon:10:00
Sea:03:00
Lon:11:00
Sea:04:00
Lon:12:00
Sea:05:00
Lon:13:00
Sea:06:00
Lon:14:00
Sea:07:00
Lon:15:00
Sea:08:00
Lon:16:00
Sea:09:00
Lon:17:00
Sea:10:00
Lon:18:00
Sea:11:00
Lon:19:00
Sea:12:00
Lon:20:00
Sea:13:00
Lon:21:00
Sea:14:00
Lon:22:00
Sea:15:00
Lon:23:00
Sea:16:00
Lon:00:00
Sea:17:00
Lon:01:00
Sea:18:00
Lon:02:00
Sea:19:00
Lon:03:00
Sea:20:00
Lon:04:00
Sea:21:00
Lon:05:00
Sea:22:00
Lon:06:00
Sea:23:00
Lon:07:00
Hourly Comparison Table
Seattle to London Hourly Time Chart
Hour-by-hour cross-reference table for planning transatlantic calls, remote handoffs, and meetings between Seattle (United States) and London (United Kingdom).
| Seattle Local Time | London Local Time |
|---|---|
| 8:00 AM (Seattle) | 4:00 PM (London) |
| 9:00 AM (Seattle) | 5:00 PM (London) |
| 10:00 AM (Seattle) | 6:00 PM (London) |
| 11:00 AM (Seattle) | 7:00 PM (London) |
| 12:00 PM (Seattle) | 8:00 PM (London) |
| 1:00 PM (Seattle) | 9:00 PM (London) |
| 2:00 PM (Seattle) | 10:00 PM (London) |
| 3:00 PM (Seattle) | 11:00 PM (London) |
| 4:00 PM (Seattle) | 12:00 AM (London) |
| 5:00 PM (Seattle) | 1:00 AM (London) |
| 6:00 PM (Seattle) | 2:00 AM (London) |
| 7:00 PM (Seattle) | 3:00 AM (London) |
| 8:00 PM (Seattle) | 4:00 AM (London) |
Reverse Direction
London to Seattle Time Difference
View Seattle from the perspective of London with reciprocal business overlap.
View Reciprocal Clocks
Reference City Profile
Current Time in Seattle, United States
Live atomic clock, daylight saving schedule, sunrise and sunset in Seattle.
Explore Seattle Clocks
Target City Profile
Current Time in London, United Kingdom
Live atomic clock, daylight saving schedule, sunrise and sunset in London.
Explore London Clocks
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Transcontinental Coordination
Pacific Northwest to UK 8-Hour Time Comparison
London is 8 hours ahead of Seattle. Connecting the Pacific Northwest's cloud computing and enterprise tech corridor with European operations requires pinpointing that early morning West Coast window before London closes.
Our interactive comparison board helps distributed teams identify workable meeting slots, compare live atomic clocks, and avoid scheduling headaches during seasonal DST shifts.
Capturing the 8:00 AM – 9:30 AM Seattle Overlap Window
Compare reciprocal schedules, verify working hour alignments, and schedule with confidence.
Navigating US and UK Daylight Saving Divergence
Compare reciprocal schedules, verify working hour alignments, and schedule with confidence.
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Google SERP Verified
London is normally 8 hours ahead of Seattle.
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