ClockAlign

Timezone answer

Best Meeting Time: San Francisco & Seoul

Seoul is currently 16 hours ahead of San Francisco (this can shift with daylight saving time). San Francisco and Seoul have no standard working-hours overlap — one side will always be outside 9am–6pm. ClockAlign helps you rotate meeting times fairly or decide when to go async instead.

🇺🇸 San Francisco, United States of America
PDT · America/Los_Angeles
🇰🇷 Seoul, South Korea
GMT+9 · Asia/Seoul

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
SF
San Francisco
🇺🇸San Francisco · PDT
S
Seoul
🇰🇷Seoul · GMT+9
Team energy across the day · times in UTC
AsleepGroggyAwakeGolden
00:0006:0012:0018:0024:00
San Francisco5:15 PM PDT
Seoul9:15 AM GMT+9
00:15 UTC
Drag anywhere on the timeline to test a meeting time · the glow marks the best window
Best times to meet
Selected time
00:15UTC
3Worst sacrifice
89%Fairness
2Teammates
SFSan Francisco5:15 PM PDTSharp3
SSeoul9:15 AM GMT+9Sharp2
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