ClockAlign

Timezone answer

Best Meeting Time: Boston & San Francisco

Boston is currently 3 hours ahead of San Francisco (this can shift with daylight saving time). Working hours (9am–6pm) overlap from 12 PM to 6 PM Boston time. ClockAlign ranks the slots inside that window by when both sides are cognitively sharp, not just awake.

🇺🇸 Boston, United States of America
EDT · America/New_York
🇺🇸 San Francisco, United States of America
PDT · 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
B
Boston
🇺🇸Boston · EDT
SF
San Francisco
🇺🇸San Francisco · PDT
Team energy across the day · times in UTC
AsleepGroggyAwakeGolden
00:0006:0012:0018:0024:00
Boston12:15 PM EDT
San Francisco9:15 AM PDT
16:15 UTC
Drag anywhere on the timeline to test a meeting time · the glow marks the best window
Best times to meet
Selected time
16:15UTC
2Worst sacrifice
100%Fairness
2Teammates
BBoston12:15 PM EDTGolden2
SFSan Francisco9:15 AM PDTSharp2
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