London-to-Pacific coordination is common for global companies with UK headquarters and West Coast US operations. Fintech, gaming, and media companies frequently bridge this 8-hour gap.
When both regions are in standard time, London is 8 hours ahead of the Pacific coast. A 5 PM end-of-day in London is only 9 AM in San Francisco — just as the West Coast workday begins. This leaves a very narrow real-time collaboration window.
The DST complication mirrors the GMT-to-EST pattern but amplified. The US and UK switch clocks on different weekends, creating brief periods where the gap is 7 hours instead of 8. During summer, when both sides observe daylight saving (BST and PDT), the gap returns to 8 hours.
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