ClockAlign

Timezone answer

Best Meeting Time: London & San Francisco

London is currently 8 hours ahead of San Francisco (this can shift with daylight saving time). Working hours (9am–6pm) overlap from 5 PM to 6 PM London time. ClockAlign ranks the slots inside that window by when both sides are cognitively sharp, not just awake.

🇬🇧 London, United Kingdom
GMT · Europe/London
🇺🇸 San Francisco, United States of America
PST · America/Los_Angeles

Use the interactive finder below to compare local times, golden windows, and sacrifice scores for this city pair. Timezone offsets use current daylight-saving rules, so always confirm the final date before sending calendar invites.

Sources: IANA Time Zone Database · CDC/NIOSH fatigue and work guidance

Free Golden Window finder

When is everyone actually sharp?

Add your team across time zones. ClockAlign maps each person’s energy through the day and finds the fairest, sharpest time to meet — not just when everyone’s awake.

Your team · 2 people
L
London
🇬🇧London · GMT
SF
San Francisco
🇺🇸San Francisco · PST
Team energy across the day · times in UTC
AsleepGroggyAwakeGolden
00:0006:0012:0018:0024:00
London5:15 PM GMT
San Francisco9:15 AM PST
17:15 UTC
Drag anywhere on the timeline to test a meeting time · the glow marks the best window
Best times to meet
Selected time
17:15UTC
3Worst sacrifice
89%Fairness
2Teammates
LLondon5:15 PM GMTSharp3
SFSan Francisco9:15 AM PSTSharp2
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