The time difference between Rio de Janeiro and Chicago is 2 hours. When it is 12:00 noon in Rio de Janeiro, it is 10:00 in Chicago. Rio de Janeiro uses the America/Sao_Paulo time zone (UTC-3), while Chicago uses America/Chicago (UTC-5).
| Detail | Rio de Janeiro | Chicago |
|---|---|---|
| Time Zone ID | America/Sao_Paulo | America/Chicago |
| UTC Offset | UTC-3 | UTC-5 |
| Abbreviation | -03 | CDT |
| DST Active | No | Yes — currently observing |
| Country | Brazil | United States |
| Region | South America | North America |
There are 6 overlapping business hours between Rio de Janeiro and Chicago (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:
Use this table to quickly convert any hour from Rio de Janeiro time to Chicago time. Rows highlighted in green indicate overlapping business hours in both cities.
| Rio de Janeiro | Chicago | |
|---|---|---|
| 00:00 | 22:00 (-1 day) | Night |
| 01:00 | 23:00 (-1 day) | Night |
| 02:00 | 00:00 | Night |
| 03:00 | 01:00 | Night |
| 04:00 | 02:00 | Night |
| 05:00 | 03:00 | Night |
| 06:00 | 04:00 | |
| 07:00 | 05:00 | |
| 08:00 | 06:00 | |
| 09:00 | 07:00 | |
| 10:00 | 08:00 | |
| 11:00 | 09:00 | Overlap |
| 12:00 | 10:00 | Overlap |
| 13:00 | 11:00 | Overlap |
| 14:00 | 12:00 | Overlap |
| 15:00 | 13:00 | Overlap |
| 16:00 | 14:00 | Overlap |
| 17:00 | 15:00 | |
| 18:00 | 16:00 | |
| 19:00 | 17:00 | |
| 20:00 | 18:00 | |
| 21:00 | 19:00 | |
| 22:00 | 20:00 | Night |
| 23:00 | 21:00 | Night |
Chicago is currently observing daylight saving time, while Rio de Janeiro is on standard time. When Chicago switches back to standard time, the difference between these two cities will shift by 1 hour.
The time difference is 2 hours. Chicago is 2 hours behind Rio de Janeiro.
Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.
The best window is between 11:00 and 17:00 Rio de Janeiro time, which corresponds to 09:00–15:00 in Chicago. Both sides fall within normal business hours.
Subtract 2 hours from Rio de Janeiro time to get Chicago time. Use the hour-by-hour table above for a quick reference.
For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.