Offset
The time difference between Glasgow and Rio de Janeiro is 4 hours.
Glasgow (BST) is ahead of Rio de Janeiro (BRT).
BST: UTC+1
BRT: UTC-3
Glasgow is currently observing daylight saving time; Rio de Janeiro is not.
When to schedule
Business-hours overlap: 1 PM–5 PM in Glasgow (9 AM–1 PM in Rio de Janeiro).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Glasgow (11:00 AM Rio de Janeiro).
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.
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
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
About these zones
Glasgow uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Rio de Janeiro is approximately 5,900 miles southwest of Glasgow.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Glasgow | Rio de Janeiro | Day |
|---|---|---|
| 12:00 am | 8:00 pm | -1 day |
| 1:00 am | 9:00 pm | -1 day |
| 2:00 am | 10:00 pm | -1 day |
| 3:00 am | 11:00 pm | -1 day |
| 4:00 am | 12:00 am | Same day |
| 5:00 am | 1:00 am | Same day |
| 6:00 am | 2:00 am | Same day |
| 7:00 am | 3:00 am | Same day |
| 8:00 am | 4:00 am | Same day |
| 9:00 am | 5:00 am | Same day |
| 10:00 am | 6:00 am | Same day |
| 11:00 am | 7:00 am | Same day |
| 12:00 pm | 8:00 am | Same day |
| 1:00 pm | 9:00 am | Same day |
| 2:00 pm | 10:00 am | Same day |
| 3:00 pm | 11:00 am | Same day |
| 4:00 pm | 12:00 pm | Same day |
| 5:00 pm | 1:00 pm | Same day |
| 6:00 pm | 2:00 pm | Same day |
| 7:00 pm | 3:00 pm | Same day |
| 8:00 pm | 4:00 pm | Same day |
| 9:00 pm | 5:00 pm | Same day |
| 10:00 pm | 6:00 pm | Same day |
| 11:00 pm | 7:00 pm | Same day |
Daylight saving time
Glasgow observes daylight saving time; Rio de Janeiro does not. The offset between the two zones changes when Glasgow 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
- 4:35 AM
- Sunset
- 9:59 PM
- Day length
- 17h 24m
- Sunrise
- 6:29 AM
- Sunset
- 5:16 PM
- Day length
- 10h 46m
Cities in these zones
Other cities in Greenwich Mean Time
Other cities in Brasilia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Airports in Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Related conversions
Common conversions
- What is 9:00 am Glasgow in Rio de Janeiro?
- 9:00 am Glasgow is 5:00 am Rio de Janeiro.
- What is 12:00 pm Glasgow in Rio de Janeiro?
- 12:00 pm Glasgow is 8:00 am Rio de Janeiro.
- What is 12:30 pm Glasgow in Rio de Janeiro?
- 12:30 pm Glasgow is 8:30 am Rio de Janeiro.
- What is 2:00 pm Glasgow in Rio de Janeiro?
- 2:00 pm Glasgow is 10:00 am Rio de Janeiro.
- What is 5:00 pm Glasgow in Rio de Janeiro?
- 5:00 pm Glasgow is 1:00 pm Rio de Janeiro.
- What is 11:30 pm Glasgow in Rio de Janeiro?
- 11:30 pm Glasgow is 7:30 pm Rio de Janeiro.