Offset
The time difference between Rio de Janeiro and Monterrey is 3 hours.
Rio de Janeiro (BRT) is ahead of Monterrey (CST).
BRT: UTC-3
CST: UTC-6
Neither Rio de Janeiro nor Monterrey is currently observing daylight saving time.
When to schedule
Business-hours overlap: 12 PM–5 PM in Rio de Janeiro (9 AM–2 PM in Monterrey).
Both teams are in working hours during this window on weekdays.
Suggested time: 2:00 PM Rio de Janeiro (11:00 AM Monterrey).
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
Mexico
- New Year's DayThu, Jan 1
- Constitution DayMon, Feb 2
- Benito Juárez's birthdayMon, Mar 16
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- Independence DayWed, Sep 16
- Revolution DayMon, Nov 16
- Christmas DayFri, Dec 25
About these zones
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Monterrey uses Central Standard Time. To call Mexico, dial +52.
Monterrey is approximately 5,100 miles northwest of Rio de Janeiro.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Rio de Janeiro | Monterrey | Day |
|---|---|---|
| 12:00 am | 9:00 pm | -1 day |
| 1:00 am | 10:00 pm | -1 day |
| 2:00 am | 11:00 pm | -1 day |
| 3:00 am | 12:00 am | Same day |
| 4:00 am | 1:00 am | Same day |
| 5:00 am | 2:00 am | Same day |
| 6:00 am | 3:00 am | Same day |
| 7:00 am | 4:00 am | Same day |
| 8:00 am | 5:00 am | Same day |
| 9:00 am | 6:00 am | Same day |
| 10:00 am | 7:00 am | Same day |
| 11:00 am | 8:00 am | Same day |
| 12:00 pm | 9:00 am | Same day |
| 1:00 pm | 10:00 am | Same day |
| 2:00 pm | 11:00 am | Same day |
| 3:00 pm | 12:00 pm | Same day |
| 4:00 pm | 1:00 pm | Same day |
| 5:00 pm | 2:00 pm | Same day |
| 6:00 pm | 3:00 pm | Same day |
| 7:00 pm | 4:00 pm | Same day |
| 8:00 pm | 5:00 pm | Same day |
| 9:00 pm | 6:00 pm | Same day |
| 10:00 pm | 7:00 pm | Same day |
| 11:00 pm | 8:00 pm | Same day |
Daylight saving time
Neither Rio de Janeiro nor Monterrey 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 46m
- Sunrise
- 5:50 AM
- Sunset
- 7:32 PM
- Day length
- 13h 41m
Daylight overlap: 8h 25m — 8:50 AM–5:16 PM in Rio de Janeiro (5:50 AM–2:16 PM in Monterrey). 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 Central Standard Time
- MTY
Related conversions
Common conversions
- What is 9:00 am Rio de Janeiro in Monterrey?
- 9:00 am Rio de Janeiro is 6:00 am Monterrey.
- What is 12:00 pm Rio de Janeiro in Monterrey?
- 12:00 pm Rio de Janeiro is 9:00 am Monterrey.
- What is 12:30 pm Rio de Janeiro in Monterrey?
- 12:30 pm Rio de Janeiro is 9:30 am Monterrey.
- What is 2:00 pm Rio de Janeiro in Monterrey?
- 2:00 pm Rio de Janeiro is 11:00 am Monterrey.
- What is 5:00 pm Rio de Janeiro in Monterrey?
- 5:00 pm Rio de Janeiro is 2:00 pm Monterrey.
- What is 11:30 pm Rio de Janeiro in Monterrey?
- 11:30 pm Rio de Janeiro is 8:30 pm Monterrey.