Offset
The time difference between Brasilia Time and Greenwich Mean Time is 4 hours.
Brasilia Time (BRT) is behind Greenwich Mean Time (BST).
BRT: UTC-3
BST: UTC+1
Greenwich Mean Time is currently observing daylight saving time; Brasilia Time is not.
When to schedule
Business-hours overlap: 9 AM–1 PM in Brasilia Time (1 PM–5 PM in Greenwich Mean Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 11:00 AM Brasilia Time (3:00 PM Greenwich Mean Time).
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
Brasilia Time is also known as BRT. To call Brazil, dial +55.
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Greenwich Mean Time is approximately 5,900 miles northeast of Brasilia Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| BRT | GMT | 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
Greenwich Mean Time observes daylight saving time; Brasilia Time does not. The offset between the two zones changes when Greenwich Mean Time 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
- 6:44 AM
- Sunset
- 5:28 PM
- Day length
- 10h 45m
- Sunrise
- 4:47 AM
- Sunset
- 9:13 PM
- Day length
- 16h 25m
Daylight overlap: 10h 29m — 6:44 AM–5:13 PM in Brasilia Time (10:44 AM–9:13 PM in Greenwich Mean Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Brasilia Time
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 BRT in GMT?
- 9:00 am BRT is 1:00 pm GMT.
- What is 12:00 pm BRT in GMT?
- 12:00 pm BRT is 4:00 pm GMT.
- What is 12:30 pm BRT in GMT?
- 12:30 pm BRT is 4:30 pm GMT.
- What is 2:00 pm BRT in GMT?
- 2:00 pm BRT is 6:00 pm GMT.
- What is 5:00 pm BRT in GMT?
- 5:00 pm BRT is 9:00 pm GMT.
- What is 11:30 pm BRT in GMT?
- 11:30 pm BRT is 3:30 am GMT, the next day.