London to San Francisco (Pacific) — Time Zone Converter
GMT/BST (UTC+1) → PT (UTC-7). San Francisco (Pacific) is 8 hours behind relative to London right now.
London
Oct 7, 2026, 12:54 PM
San Francisco (Pacific)
Oct 7, 2026, 4:54 AM
Need the reverse? San Francisco (Pacific) to London →
Sample times — GMT/BST to PT
Sample conversions for today; daylight saving applied.
About London and San Francisco (Pacific)London vs San Francisco (Pacific) time difference through 2026
The gap changes 4 times during 2026, because London and San Francisco (Pacific) switch to and from daylight saving time on different dates. Double-check meetings booked in the weeks around each switch.
Dates (2026) GMT/BST PT Difference Jan 1 – Mar 7 UTC UTC−8 San Francisco (Pacific) is 8 hours behind Mar 8 – Mar 28 UTC UTC−7 San Francisco (Pacific) is 7 hours behind Mar 29 – Oct 24 UTC+1 UTC−7 San Francisco (Pacific) is 8 hours behind Oct 25 – Oct 31 UTC UTC−7 San Francisco (Pacific) is 7 hours behind Nov 1 – Dec 31 UTC UTC−8 San Francisco (Pacific) is 8 hours behind
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
London vs San Francisco (Pacific) time difference through 2026
The gap changes 4 times during 2026, because London and San Francisco (Pacific) switch to and from daylight saving time on different dates. Double-check meetings booked in the weeks around each switch.
| Dates (2026) | GMT/BST | PT | Difference |
|---|---|---|---|
| Jan 1 – Mar 7 | UTC | UTC−8 | San Francisco (Pacific) is 8 hours behind |
| Mar 8 – Mar 28 | UTC | UTC−7 | San Francisco (Pacific) is 7 hours behind |
| Mar 29 – Oct 24 | UTC+1 | UTC−7 | San Francisco (Pacific) is 8 hours behind |
| Oct 25 – Oct 31 | UTC | UTC−7 | San Francisco (Pacific) is 7 hours behind |
| Nov 1 – Dec 31 | UTC | UTC−8 | San Francisco (Pacific) is 8 hours behind |
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
London to San Francisco conversions are a daily ritual for UK staff at US tech firms. Because London leads by eight hours, UK afternoons map to California mornings — the only stretch when both offices are open.
Frequently asked questions
What is the time difference between London and San Francisco (Pacific)?
Right now the offset is about 8 hours behind (from GMT/BST to PT). Daylight saving rules differ by region, so use the converter and table above rather than memorising a single number year-round.
Does daylight saving affect London vs San Francisco (Pacific)?
Yes, whenever either region springs forward or falls back, the gap can shift by an hour. This page uses the IANA time-zone database so those transitions are applied automatically.
How do I schedule a meeting across the United Kingdom and the San Francisco Bay Area?
Pick a time in the converter, share both columns with attendees, and avoid early-morning or late-night slots on one side. The sample table lists common business hours in the source zone.
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