Offset
There is no time difference between Rio de Janeiro and Buenos Aires.
Rio de Janeiro (BRT) is currently the same time as Buenos Aires (ART).
BRT: UTC-3
ART: UTC-3
Neither Rio de Janeiro nor Buenos Aires is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–5 PM in Rio de Janeiro (9 AM–5 PM in Buenos Aires).
Both teams are in working hours during this window on weekdays.
Suggested time: 1:00 PM Rio de Janeiro (1:00 PM Buenos Aires).
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Brazil
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- TiradentesTue, Apr 21
- Labour DayFri, May 1
- Corpus ChristiThu, Jun 4
- Independence DayMon, Sep 7
- Our Lady of AparecidaMon, Oct 12
- All Souls' DayMon, Nov 2
- Republic Proclamation DaySun, Nov 15
- Black Awareness DayFri, Nov 20
- Christmas DayFri, Dec 25
Argentina
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Day of Remembrance for Truth and JusticeTue, Mar 24
- Day of the Veterans and Fallen of the Malvinas WarThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- May RevolutionMon, May 25
- Anniversary of the Passing of General Martín Miguel de GüemesMon, Jun 15
- General Manuel Belgrano Memorial DaySat, Jun 20
- Independence DayThu, Jul 9
- General José de San Martín Memorial DayMon, Aug 17
- Day of Respect for Cultural DiversityMon, Oct 12
- National Sovereignty DayMon, Nov 23
- Immaculate Conception DayTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Buenos Aires is approximately 1,200 miles southwest of Rio de Janeiro.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Rio de Janeiro | Buenos Aires | Day |
|---|---|---|
| 12:00 am | 12:00 am | Same day |
| 1:00 am | 1:00 am | Same day |
| 2:00 am | 2:00 am | Same day |
| 3:00 am | 3:00 am | Same day |
| 4:00 am | 4:00 am | Same day |
| 5:00 am | 5:00 am | Same day |
| 6:00 am | 6:00 am | Same day |
| 7:00 am | 7:00 am | Same day |
| 8:00 am | 8:00 am | Same day |
| 9:00 am | 9:00 am | Same day |
| 10:00 am | 10:00 am | Same day |
| 11:00 am | 11:00 am | Same day |
| 12:00 pm | 12:00 pm | Same day |
| 1:00 pm | 1:00 pm | Same day |
| 2:00 pm | 2:00 pm | Same day |
| 3:00 pm | 3:00 pm | Same day |
| 4:00 pm | 4:00 pm | Same day |
| 5:00 pm | 5:00 pm | Same day |
| 6:00 pm | 6:00 pm | Same day |
| 7:00 pm | 7:00 pm | Same day |
| 8:00 pm | 8:00 pm | Same day |
| 9:00 pm | 9:00 pm | Same day |
| 10:00 pm | 10:00 pm | Same day |
| 11:00 pm | 11:00 pm | Same day |
Daylight saving time
Neither Rio de Janeiro nor Buenos Aires observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:29 AM
- Sunset
- 5:16 PM
- Day length
- 10h 47m
- Sunrise
- 7:55 AM
- Sunset
- 5:51 PM
- Day length
- 9h 56m
Daylight overlap: 9h 21m — 7:55 AM–5:16 PM in Rio de Janeiro (7:55 AM–5:16 PM in Buenos Aires). Both locations are in daylight during this window.
Cities in these zones
Other cities in Brasilia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am Rio de Janeiro in Buenos Aires?
- 9:00 am Rio de Janeiro is 9:00 am Buenos Aires.
- What is 12:00 pm Rio de Janeiro in Buenos Aires?
- 12:00 pm Rio de Janeiro is 12:00 pm Buenos Aires.
- What is 12:30 pm Rio de Janeiro in Buenos Aires?
- 12:30 pm Rio de Janeiro is 12:30 pm Buenos Aires.
- What is 2:00 pm Rio de Janeiro in Buenos Aires?
- 2:00 pm Rio de Janeiro is 2:00 pm Buenos Aires.
- What is 5:00 pm Rio de Janeiro in Buenos Aires?
- 5:00 pm Rio de Janeiro is 5:00 pm Buenos Aires.
- What is 11:30 pm Rio de Janeiro in Buenos Aires?
- 11:30 pm Rio de Janeiro is 11:30 pm Buenos Aires.