ClockAlign

Timezone answer

Best Meeting Time: Chicago & Sao Paulo

Sao Paulo is currently 2 hours ahead of Chicago (this can shift with daylight saving time). Working hours (9am–6pm) overlap from 9 AM to 4 PM Chicago time. ClockAlign ranks the slots inside that window by when both sides are cognitively sharp, not just awake.

🇺🇸 Chicago, United States of America
CDT · America/Chicago
🇧🇷 Sao Paulo, Brazil
GMT-3 · America/Sao_Paulo

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
C
Chicago
🇺🇸Chicago · CDT
SP
Sao Paulo
🇧🇷Sao Paulo · GMT-3
Team energy across the day · times in UTC
AsleepGroggyAwakeGolden
00:0006:0012:0018:0024:00
Chicago9:15 AM CDT
Sao Paulo11:15 AM GMT-3
14:15 UTC
Drag anywhere on the timeline to test a meeting time · the glow marks the best window
Best times to meet
Selected time
14:15UTC
2Worst sacrifice
89%Fairness
2Teammates
CChicago9:15 AM CDTSharp2
SPSao Paulo11:15 AM GMT-3Golden1
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