Rio de Janeiro Time Zone Information
Rio de Janeiro is on Greenwich Mean Time - 3. New York City is on GMT - 5, so when both countries are on Standard Time, noon in New York City, is 2:00 PM in Rio. However, this happens only for a few days a year, because both countries also switch to Daylight Savings Time for the summer. Here is where it gets tricky. When It is Spring in Rio, it is Fall in New York, so Rio adds an hour for Daylight Savings Time when New York is about to return to Standard Time. As a result of this, the time difference between New York and Rio can actually be anywhere from one hour to three hours, depending on the time of year. To complicate matters even more, the change to Daylight Savings Time is a matter of legislation, so the dates can change from time to time.
How do you know the difference today? The simplest way is to consult an online resource like the World Clock where the information is always up to date.
The current date and time in Rio is
For reference purposes, here is a table for 2006-2007.
| Season in US | Date | Time in New York | Time in Rio de Janeiro | Time Difference |
| Winter | GMT - 5 | GMT - 2 (DST) | 3 hours | |
| Sunday, February 24, 2007 DST ends in Rio de Janeiro at 12:01 AM | GMT - 5 | GMT - 3 | 2 hours | |
| Spring | Sunday, March 11, 2007 DST begins in New York City at 2:00 AM local standard time | GMT - 4 (DST) | GMT - 3 | 1 hour |
| Summer | GMT - 4 (DST) | GMT - 3 | 1 hour | |
| Fall | Sunday, November 5, 2006 DST begins in Rio de Janeiro at 12:01 AM | GMT - 4 (DST) | GMT - 2 (DST) | 2 hours |
| Sunday, October 29, 2006 DST ends in New York City at 2:00 AM local daylight time | GMT - 5 | GMT - 2(DST) | 3 hours | |
| Winter | GMT - 5 | GMT - 2 | 3 hours |
