Time difference · America/Argentina/Buenos_Aires ↔ Europe/London
Time difference between Buenos Aires and London
In short
London is 4 hours ahead of Buenos Aires for 217 of the next 365 days.
From 1 November 2026 to 27 March 2027 the difference is 3 hours.
When it is 09:00 in Buenos Aires, it is 13:00 in London.
Computed from IANA tzdb 2026e UTC offsets for America/Argentina/Buenos_Aires and Europe/London.
Data updated
Right now
- Buenos Aires
- --:--
- London
- --:--
Current local times appear here.
Usual difference
+4 h
London ahead, 217 of the next 365 days
Through the year
+3 h to +4 h
London relative to Buenos Aires
Working hours overlap
4 h
09:00–13:00 in Buenos Aires
Straight-line distance
11,128 km
6,915 mi between city centres
How the difference changes over the next 12 months
Positive values mean London is ahead of Buenos Aires.
| From | Until | London vs Buenos Aires |
|---|---|---|
| 1 Nov 2026 | 28 Mar 2027 | +3 hchanged |
| 28 Mar 2027 | 31 Oct 2027 | +4 h |
| 31 Oct 2027 | 31 Oct 2027 | +3 hchanged |
Dates are UTC days; clocks change at local times listed below.
When the clocks change
Buenos Aires
America/Argentina/Buenos_Aires
No clock changes in this period.
London
Europe/London
Sun, 28 March 2027
At 01:00 clocks go forward 1 hour to 02:00 (BST, UTC+01:00)
Sun, 31 October 2027
At 02:00 clocks go back 1 hour to 01:00 (GMT, UTC+00:00)
Hour by hour (+4 h)
At the usual difference. Arrival time = departure time in Buenos Aires + flight time + 4 hours. On dates with a different gap, shift every row by the change.
| Buenos Aires | London | Both awake / working |
|---|---|---|
| 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 | both awake |
| 08:00 | 12:00 | both awake |
| 09:00 | 13:00 | working hours |
| 10:00 | 14:00 | working hours |
| 11:00 | 15:00 | working hours |
| 12:00 | 16:00 | working hours |
| 13:00 | 17:00 | both awake |
| 14:00 | 18:00 | both awake |
| 15:00 | 19:00 | both awake |
| 16:00 | 20:00 | both awake |
| 17:00 | 21:00 | both awake |
| 18:00 | 22:00 | both awake |
| 19:00 | 23:00 | — |
| 20:00 | 00:00next day | — |
| 21:00 | 01:00next day | — |
| 22:00 | 02:00next day | — |
| 23:00 | 03:00next day | — |
Calling and meeting windows
| Difference | Days | Both awake (07–23), Buenos Aires time | Both working (09–17), Buenos Aires time |
|---|---|---|---|
| +4 h | 217 | 07:00–19:00 | 09:00–13:00 |
| +3 h | 148 | 07:00–20:00 | 09:00–14:00 |
What the data shows
Over the next 12 months the gap is 4 hours for 217 days, 3 hours for 148 days, because only London changes its clocks.
How we calculated this: Days per distinct difference across the period.
At the usual difference, 09:00–17:00 working days overlap for 4 hours: 09:00–13:00 in Buenos Aires, 13:00–17:00 in London.
How we calculated this: Intersection of 09:00–17:00 local in both places at the typical difference.
This page also answers for
These places keep exactly the same clocks over the period, so every number above applies to them too.
Same clock as Buenos Aires
- São Paulo, Brazil
- Asunción, Paraguay
- Montevideo, Uruguay
- Paramaribo, Suriname
- Punta Arenas, Chile
- Rio de Janeiro, Brazil
- Belo Horizonte, Brazil
- Porto Alegre, Brazil
Same clock as London
- Lisbon, Portugal
- Dublin, Ireland
- Las Palmas, Spain
- Birmingham, United Kingdom
- Manchester, United Kingdom
- Leeds, United Kingdom
- Porto, Portugal
- Sheffield, United Kingdom
Search flights between Buenos Aires and London
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