What is CST in BRT?
Brasília Time is 2 hours ahead
Central Time is on UTC−5:00 and Brasília Time is on UTC−3:00 right now. Central Time is on daylight saving, so its clocks read CDT. The gap changes during the year — see below.
- Time in Chicago
- 9:56 pm
- Time in São Paulo
- 11:56 pm
- Difference
- +2 h
- Next clock change
- November 1, 2026
Convert a time
BRT — Brasília Time
11:00 pm
Tue
When the difference changes
Central Time and Brasília Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – November 1, 2026Brasília Time is 2 hours ahead
- November 1, 2026 – March 14, 2027Brasília Time is 3 hours ahead
- March 14, 2027 – onwardsBrasília Time is 2 hours ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Central Time
Clocks go back one hour at 2am local time, becoming CST.
Brasília Time
Brasília Time stays on BRT all year, so its offset from UTC never moves.
CST to BRT conversion table
Every hour of Tuesday, September 22, 2026, converted from Central Time to Brasília Time. 2 of the 24 hours fall on a different calendar day in São Paulo, which is marked.
- 12:00 am CDT
- 2:00 am BRT
- 1:00 am CDT
- 3:00 am BRT
- 2:00 am CDT
- 4:00 am BRT
- 3:00 am CDT
- 5:00 am BRT
- 4:00 am CDT
- 6:00 am BRT
- 5:00 am CDT
- 7:00 am BRT
- 6:00 am CDT
- 8:00 am BRT
- 7:00 am CDT
- 9:00 am BRT
- 8:00 am CDT
- 10:00 am BRT
- 9:00 am CDT
- 11:00 am BRT
- 10:00 am CDT
- 12:00 pm BRT
- 11:00 am CDT
- 1:00 pm BRT
- 12:00 pm CDT
- 2:00 pm BRT
- 1:00 pm CDT
- 3:00 pm BRT
- 2:00 pm CDT
- 4:00 pm BRT
- 3:00 pm CDT
- 5:00 pm BRT
- 4:00 pm CDT
- 6:00 pm BRT
- 5:00 pm CDT
- 7:00 pm BRT
- 6:00 pm CDT
- 8:00 pm BRT
- 7:00 pm CDT
- 9:00 pm BRT
- 8:00 pm CDT
- 10:00 pm BRT
- 9:00 pm CDT
- 11:00 pm BRT
- 10:00 pm CDT
- 12:00 am BRT+1 day
- 11:00 pm CDT
- 1:00 am BRT+1 day
Scheduling between the two
Working hours overlap from 9:00 am to 4:00 pm CDT, which is 11:00 am to 6:00 pm BRT. Anything inside that window falls in the normal working day at both ends.
A note on CST: it can also mean China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). This page means US Central Time.
Central Time (CDT) is used in Dallas, Houston, Mexico City and Winnipeg
Brasília Time (BRT) is used in Rio de Janeiro and Brasília. Brazil ended daylight saving in 2019.