BST to Rio de Janeiro Time Converter
BRT is 3 hours behind GMT. 9:00 AM GMT = 6:00 AM BRT.
BRT is 3 hours behind GMT at the moment. To convert BST to Rio de Janeiro Time, subtract 3 hours from the BST time: 9:00 AM GMT = 6:00 AM BRT.
BST (British Time) is used in United Kingdom from late March to late October. Rio de Janeiro Time (Rio de Janeiro time) is used in Rio de Janeiro, Brazil.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
BST to Rio de Janeiro Time time conversion table
BST to Rio de Janeiro Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Rio de Janeiro Time | Day |
|---|---|---|
| 12:00 AM GMT | 9:00 PM BRT | previous day |
| 1:00 AM GMT | 10:00 PM BRT | previous day |
| 2:00 AM GMT | 11:00 PM BRT | previous day |
| 3:00 AM GMT | 12:00 AM BRT | night |
| 4:00 AM GMT | 1:00 AM BRT | night |
| 5:00 AM GMT | 2:00 AM BRT | night |
| 6:00 AM GMT | 3:00 AM BRT | night |
| 7:00 AM GMT | 4:00 AM BRT | night |
| 8:00 AM GMT | 5:00 AM BRT | night |
| 9:00 AM GMT | 6:00 AM BRT | — |
| 10:00 AM GMT | 7:00 AM BRT | — |
| 11:00 AM GMT | 8:00 AM BRT | — |
| 12:00 PM GMT | 9:00 AM BRT | work hours |
| 1:00 PM GMT | 10:00 AM BRT | work hours |
| 2:00 PM GMT | 11:00 AM BRT | work hours |
| 3:00 PM GMT | 12:00 PM BRT | work hours |
| 4:00 PM GMT | 1:00 PM BRT | work hours |
| 5:00 PM GMT | 2:00 PM BRT | — |
| 6:00 PM GMT | 3:00 PM BRT | — |
| 7:00 PM GMT | 4:00 PM BRT | — |
| 8:00 PM GMT | 5:00 PM BRT | — |
| 9:00 PM GMT | 6:00 PM BRT | — |
| 10:00 PM GMT | 7:00 PM BRT | — |
| 11:00 PM GMT | 8:00 PM BRT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert BST to Rio de Janeiro Time
Subtract 3 hours from the BST time to get Rio de Janeiro Time.
Example: 9:00 AM GMT = 6:00 AM BRT.
Across midnight: 1:00 AM GMT = 10:00 PM BRT (previous day). The date changes, so always check the day as well as the hour.
Time difference between BST and Rio de Janeiro Time
The time difference between BST and Rio de Janeiro Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: Rio de Janeiro Time is 3 hours behind of BST.
- 29 Mar 2026 – 24 Oct 2026: Rio de Janeiro Time is 4 hours behind of BST.
- 25 Oct 2026 – 31 Dec 2026: Rio de Janeiro Time is 3 hours behind of BST.
BST and Rio de Janeiro Time during daylight saving time
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- Rio de Janeiro Time does not observe daylight saving time; it stays on UTC−3 all year.
Best time for a meeting between BST and Rio de Janeiro Time
BST and Rio de Janeiro Time share 5 hours of the 9 AM–5 PM working day. Any time between 12:00 PM and 5:00 PM GMT lands between 9:00 AM and 2:00 PM BRT, inside working hours for both.
BST to Rio de Janeiro Time FAQ
What is the time difference between BST and Rio de Janeiro Time?
Right now BRT is 3 hours behind GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Rio de Janeiro Time?
9:00 AM GMT is 6:00 AM BRT.
What is 12 PM (noon) BST in Rio de Janeiro Time?
12:00 PM GMT is 9:00 AM BRT.
Is Rio de Janeiro Time ahead of or behind BST?
BRT is 3 hours behind GMT, so it is earlier in Rio de Janeiro Time than in BST.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does Rio de Janeiro Time change for daylight saving time?
No. Rio de Janeiro Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between BST and Rio de Janeiro Time?
BST and Rio de Janeiro Time share 5 hours of the 9 AM–5 PM working day. Any time between 12:00 PM and 5:00 PM GMT lands between 9:00 AM and 2:00 PM BRT, inside working hours for both.
Related conversions
Convert Rio de Janeiro Time to BST
Convert BST to other time zones
Convert other time zones to Rio de Janeiro Time
Updated 7 November 2026. Time zone data: IANA tz database.