Offset
The time difference between Rio de Janeiro and Belfast is 4 hours.
Rio de Janeiro (BRT) is behind Belfast (BST).
BRT: UTC-3
BST: UTC+1
Belfast is currently observing daylight saving time; Rio de Janeiro is not.
When to schedule
Business-hours overlap: 9 AM–1 PM in Rio de Janeiro (1 PM–5 PM in Belfast).
Both teams are in working hours during this window on weekdays.
Suggested time: 11:00 AM Rio de Janeiro (3:00 PM Belfast).
This window may shift by an hour during daylight saving time.
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
United Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Belfast uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.
Belfast is approximately 5,800 miles north of Rio de Janeiro.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Rio de Janeiro | Belfast | Day |
|---|---|---|
| 12:00 am | 4:00 am | Same day |
| 1:00 am | 5:00 am | Same day |
| 2:00 am | 6:00 am | Same day |
| 3:00 am | 7:00 am | Same day |
| 4:00 am | 8:00 am | Same day |
| 5:00 am | 9:00 am | Same day |
| 6:00 am | 10:00 am | Same day |
| 7:00 am | 11:00 am | Same day |
| 8:00 am | 12:00 pm | Same day |
| 9:00 am | 1:00 pm | Same day |
| 10:00 am | 2:00 pm | Same day |
| 11:00 am | 3:00 pm | Same day |
| 12:00 pm | 4:00 pm | Same day |
| 1:00 pm | 5:00 pm | Same day |
| 2:00 pm | 6:00 pm | Same day |
| 3:00 pm | 7:00 pm | Same day |
| 4:00 pm | 8:00 pm | Same day |
| 5:00 pm | 9:00 pm | Same day |
| 6:00 pm | 10:00 pm | Same day |
| 7:00 pm | 11:00 pm | Same day |
| 8:00 pm | 12:00 am | +1 day |
| 9:00 pm | 1:00 am | +1 day |
| 10:00 pm | 2:00 am | +1 day |
| 11:00 pm | 3:00 am | +1 day |
Daylight saving time
Belfast observes daylight saving time; Rio de Janeiro does not. The offset between the two zones changes when Belfast transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
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
- 4:50 AM
- Sunset
- 9:57 PM
- Day length
- 17h 6m
Cities in these zones
Other cities in Brasilia Time
Other cities in Greenwich Mean 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 Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Related conversions
Common conversions
- What is 9:00 am Rio de Janeiro in Belfast?
- 9:00 am Rio de Janeiro is 1:00 pm Belfast.
- What is 12:00 pm Rio de Janeiro in Belfast?
- 12:00 pm Rio de Janeiro is 4:00 pm Belfast.
- What is 12:30 pm Rio de Janeiro in Belfast?
- 12:30 pm Rio de Janeiro is 4:30 pm Belfast.
- What is 2:00 pm Rio de Janeiro in Belfast?
- 2:00 pm Rio de Janeiro is 6:00 pm Belfast.
- What is 5:00 pm Rio de Janeiro in Belfast?
- 5:00 pm Rio de Janeiro is 9:00 pm Belfast.
- What is 11:30 pm Rio de Janeiro in Belfast?
- 11:30 pm Rio de Janeiro is 3:30 am Belfast, the next day.