Time Difference Between Rio de Janeiro and London

The time difference between Rio de Janeiro and London is 4 hours. When it is 12:00 noon in Rio de Janeiro, it is 16:00 in London. Rio de Janeiro uses the America/Sao_Paulo time zone (UTC-3), while London uses Europe/London (UTC+1).

London is 4 hours ahead of Rio de Janeiro — 4 hours
Rio de Janeiro, Brazil
21:48:55
Sunday, May 10, 2026
UTC-3 · -03
↔
London, United Kingdom
01:48:55
Monday, May 11, 2026
UTC+1 · BST (DST)

Time Zone Details: Rio de Janeiro vs London

Detail Rio de Janeiro London
Time Zone IDAmerica/Sao_PauloEurope/London
UTC OffsetUTC-3UTC+1
Abbreviation-03BST
DST ActiveNoYes — currently observing
CountryBrazilUnited Kingdom
RegionSouth AmericaEurope

Best Time to Schedule a Call

There are 4 overlapping business hours between Rio de Janeiro and London (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:

09:00–13:00 in Rio de Janeiro  =  13:00–17:00 in London

Hour-by-Hour Time Conversion

Use this table to quickly convert any hour from Rio de Janeiro time to London time. Rows highlighted in green indicate overlapping business hours in both cities.

Rio de Janeiro London
00:00 04:00 Night
01:00 05:00 Night
02:00 06:00 Night
03:00 07:00 Night
04:00 08:00 Night
05:00 09:00 Night
06:00 10:00
07:00 11:00
08:00 12:00
09:00 13:00 Overlap
10:00 14:00 Overlap
11:00 15:00 Overlap
12:00 16:00 Overlap
13:00 17:00
14:00 18:00
15:00 19:00
16:00 20:00
17:00 21:00
18:00 22:00
19:00 23:00
20:00 00:00 (+1 day)
21:00 01:00 (+1 day)
22:00 02:00 (+1 day) Night
23:00 03:00 (+1 day) Night

Daylight Saving Time (DST) Impact

London is currently observing daylight saving time, while Rio de Janeiro is on standard time. When London switches back to standard time, the difference between these two cities will shift by 1 hour.

Practical Tips for Rio de Janeiro–London Scheduling

Compare Rio de Janeiro and London with Other Cities

From Rio de Janeiro

Rio de Janeiro vs New York Rio de Janeiro vs Tokyo Rio de Janeiro vs Sydney Rio de Janeiro vs Dubai Rio de Janeiro vs Los Angeles Rio de Janeiro vs Paris Rio de Janeiro vs Singapore Rio de Janeiro vs Berlin Rio de Janeiro vs Toronto Rio de Janeiro vs Hong Kong Rio de Janeiro vs Mumbai Rio de Janeiro vs Seoul Rio de Janeiro vs Chicago Rio de Janeiro vs San Francisco Rio de Janeiro vs Moscow Rio de Janeiro vs Bangkok Rio de Janeiro vs Shanghai Rio de Janeiro vs Sao Paulo Rio de Janeiro vs Mexico City Rio de Janeiro vs Cairo Rio de Janeiro vs Johannesburg

From London

London vs New York London vs Tokyo London vs Sydney London vs Dubai London vs Los Angeles London vs Paris London vs Singapore London vs Berlin London vs Toronto London vs Hong Kong London vs Mumbai London vs Seoul London vs Chicago London vs San Francisco London vs Moscow London vs Bangkok London vs Shanghai London vs Sao Paulo London vs Mexico City London vs Cairo London vs Johannesburg

Frequently Asked Questions

What is the time difference between Rio de Janeiro and London?

The time difference is 4 hours. London is 4 hours ahead of Rio de Janeiro.

Does the time difference change during the year?

Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.

When is the best time to call from Rio de Janeiro to London?

The best window is between 09:00 and 13:00 Rio de Janeiro time, which corresponds to 13:00–17:00 in London. Both sides fall within normal business hours.

How do I convert Rio de Janeiro time to London time?

Add 4 hours to Rio de Janeiro time to get London time. Use the hour-by-hour table above for a quick reference.

Related Pages

For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.