Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between brt and cdt?
Brasilia Time (brt) is UTC-3 and Central Daylight Time (cdt) is UTC-5. The difference between them is 2 hours.
Where is brt used?
Brasilia Time (brt) is used in Brazil and surrounding regions. The IANA timezone identifier is America/Sao_Paulo.
Where is cdt used?
Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.
How do I convert brt to cdt?
Use the interactive converter above. Drag the time slider to any brt time and the cdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
How far apart are BRT (São Paulo) and CDT (Chicago)?
BRT (São Paulo) is 2 hours ahead of CDT (Chicago). When it's noon in BRT (São Paulo), it's 10:00 in CDT (Chicago).
BRT (São Paulo) is in the America/Sao_Paulo timezone. CDT (Chicago) is in America/Chicago. The difference is 2 hours.
Daily overlap window
Both BRT (São Paulo) and CDT (Chicago) are simultaneously in business hours for 6 hours per day (assuming standard 9:00–17:00 working hours).
00:0006:0012:0018:0024:00
BRT (São Paulo)
CDT (Chicago)
Overlap (6h)
Recommended meeting windows
Both BRT (São Paulo) and CDT (Chicago) are in standard hours simultaneously for 6h per day. 3 recommended slots shown below.
11:00 São Paulo / 09:00 Chicago✓ Both working
12:00 São Paulo / 10:00 Chicago✓ Both working
13:00 São Paulo / 11:00 Chicago✓ Both working
Based on standard 09:00–17:00 working hours in each location's local time.
Public holidays this year
⚡ Upcoming holidays in both locations, confirm with your contact before booking.
BRT (São Paulo)7 holidays
Jul 9Constitutionalist Revolution of 1932
Sep 7Independence Day
Oct 12Our Lady of Aparecida
Nov 2All Souls' Day
Nov 15Republic Proclamation Day
CDT (Chicago)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
BRT (São Paulo) and CDT (Chicago) — practical scheduling
BRT (São Paulo) (Brazil) leads CDT (Chicago) (USA) by 2 hours. Despite the gap, a 6-hour window of shared business hours each day keeps real-time collaboration practical for both sides.
💡 Practical scheduling guidelines
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11:00–12:00 in BRT (São Paulo) = 09:00–10:00 in CDT (Chicago). Both sides are in standard business hours during this window.
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12:00–13:00 in BRT (São Paulo) = 10:00–11:00 in CDT (Chicago). Both sides are in standard business hours during this window.
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13:00–14:00 in BRT (São Paulo) = 11:00–12:00 in CDT (Chicago). Both sides are in standard business hours during this window.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in BRT (São Paulo). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.
