Time difference between Buenos Aires and London
London is currently 4 hours ahead of Buenos Aires. The best shared working window is 12:00–16:00 UTC — 4 hours a day. The table below shows the hours side by side.
National conventions are the default and the public figure. Change them here for your own answer — the chart, the window and the calendar file all follow.
09:00 Buenos Aires At work = 13:00 London At work
Tap any hour to read it in both cities.
The difference changes twice a year
Buenos Aires and London do not change their clocks on the same dates, so a standing meeting moves by an hour in these weeks.
- 25 October – 27 March +3 h
- usually +4 h
Days when one side is not at work
A public holiday is not a time-zone fact, so no converter shows it — but it is the same question.
- 12 October — Día del Respeto a la Diversidad Cultural Buenos Aires off
- 23 November — Día de la Soberanía Nacional Buenos Aires off
- 8 December — Inmaculada Concepción de María Buenos Aires off
Hour by hour
| Buenos Aires | London | |
|---|---|---|
| 00:00 | 04:00 | |
| 01:00 | 05:00 | |
| 02:00 | 06:00 | |
| 03:00 | 07:00 | |
| 04:00 | 08:00 | |
| 05:00 | 09:00 | |
| 06:00 | 10:00 | |
| 07:00 | 11:00 | |
| 08:00 | 12:00 | |
| 09:00 | 13:00 | both at work |
| 10:00 | 14:00 | both at work |
| 11:00 | 15:00 | both at work |
| 12:00 | 16:00 | both at work |
| 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 | |
| 21:00 | 01:00 | |
| 22:00 | 02:00 | |
| 23:00 | 03:00 |
The difference adjusts automatically for daylight saving in both Buenos Aires and London.
The working week
- Buenos Aires
- 09:00 to 18:00, Monday, Tuesday, Wednesday, Thursday, Friday.
- London
- 09:00 to 17:00, Monday, Tuesday, Wednesday, Thursday, Friday.
Sources and last check
Times, offsets and sun positions on this page are computed live from the IANA timezone database and the NOAA solar algorithm, so they do not depend on the review dates below.
- Working hours and weekend days for 55 countries
- Source: Published national labour conventions and government working-hours guidance. Last checked, reviewed every 12 months.
Not covered:A national convention, not any given employer. Countries not listed fall back to a nine-to-five, Monday to Friday default, and pages say so rather than implying we checked.
FAQ
How many hours between Buenos Aires and London?
London is 4 hours ahead of Buenos Aires (+4 hours).
When is the best time for a meeting?
Around 12:00–16:00 UTC, when both working days overlap — Buenos Aires works 09:00–18:00 and London works 09:00–17:00, each in their own local time.