TIME ZONE CONVERTER
London to Rio de Janeiro
Time Converter
Convert London, United Kingdom to Rio de Janeiro, Brazil. Compare dates, seasonal differences and meeting hours.
London is 3h or 4h ahead of Rio de Janeiro in 2026, depending on the date.
9 AM London = 6 AM Rio de Janeiro
Selected date: November 13, 2026.
THE QUICK REFERENCE
CSVLondon to Rio de Janeiro conversion table
November 13, 2026 · Date changes are marked.
View the full 24-hour table
| London | Rio de Janeiro |
|---|---|
| 12:00 AM | 9:00 PM -1 day |
| 1:00 AM | 10:00 PM -1 day |
| 2:00 AM | 11:00 PM -1 day |
| 3:00 AM | 12:00 AM |
| 4:00 AM | 1:00 AM |
| 5:00 AM | 2:00 AM |
| 6:00 AM | 3:00 AM |
| 7:00 AM | 4:00 AM |
| 8:00 AM | 5:00 AM |
| 9:00 AM | 6:00 AM |
| 10:00 AM | 7:00 AM |
| 11:00 AM | 8:00 AM |
| London | Rio de Janeiro |
|---|---|
| 12:00 PM | 9:00 AM |
| 1:00 PM | 10:00 AM |
| 2:00 PM | 11:00 AM |
| 3:00 PM | 12:00 PM |
| 4:00 PM | 1:00 PM |
| 5:00 PM | 2:00 PM |
| 6:00 PM | 3:00 PM |
| 7:00 PM | 4:00 PM |
| 8:00 PM | 5:00 PM |
| 9:00 PM | 6:00 PM |
| 10:00 PM | 7:00 PM |
| 11:00 PM | 8:00 PM |
Starting with the Rio de Janeiro working day
These examples start on 2026-11-13 in Rio de Janeiro.
09:00 Rio de Janeiro12:00 →London · 2026-11-13
17:00 Rio de Janeiro20:00 →London · 2026-11-13
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 London to Rio de Janeiro throughout 2026
Keeping 09:00 on the London clock produces 2 different destination clock/date answers in 2026. The ranges below use London calendar dates, including transition days.
| Dates in London · 2026 | Rio de Janeiro answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 2887 dates | 06:00Same date | UTC → UTC−03:00 | |
| Mar 29 – Oct 24210 dates | 05:00Same date | UTC+01:00 → UTC−03:00 | |
| Oct 25 – Dec 3168 dates | 06:00Same date | UTC → UTC−03:00 |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does London time become a different date in Rio de Janeiro?
Your complete source day: 2026-11-13. Each range shows which destination date to use.
London · 2026-11-1300:00–03:00UTC
Rio de Janeiro · 2026-11-1221:00–24:00UTC−03:00 Previous day
London · 2026-11-1303:00–24:00UTC
Rio de Janeiro · 2026-11-1300:00–21:00UTC−03:00 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How Rio de Janeiro compares with London throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−3h
−4h
−3h
London changes its UTC offset in 2026. Rio de Janeiro keeps one UTC offset this year.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | Rio de Janeiro vs London |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 3h behind |
| 29 Mar 2026, 01:00 UTC | 25 Oct 2026, 01:00 UTC | 4h behind |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 3h behind |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has Rio de Janeiro 4h behind relative to London. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with London |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 3h behind |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 3h behind |
PLAN BEYOND A SINGLE DAY
Daily CSVLondon–Rio de Janeiro working hours through 2026
Every date calculated with your working windows. 261 selected London workdays; public holidays are not applied.
Least shared time4h
Most common4h
Most shared time5h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in London 13:00–16:00.
These starts fit both working windows on every selected London workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
London: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. Rio de Janeiro: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
TWO PLACES. ONE CONNECTION.
≈ 9,278 km apartAcross the map. Across the clock.
City-center coordinates. Distance is an approximate great-circle distance, not a flight route.
THE DETAILS THAT MATTER
London to Rio de Janeiro: useful answers
Why is the London to Rio de Janeiro difference sometimes 3 hours and sometimes 4 hours?
London is 3h or 4h ahead of Rio de Janeiro in 2026, depending on the date. London changes its UTC offset in 2026. Rio de Janeiro keeps one UTC offset this year.
Does the London–Rio de Janeiro time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in London on 2026-11-13 is 06:00 in Rio de Janeiro on 2026-11-13. This selected time stays on the same date in both places. Other times can cross midnight.
Can London and Rio de Janeiro meet during working hours?
Your selected working windows share 5h on 2026-11-13. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Choose the question you need answered
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology