Buenos Aires to London Time Difference

London is 4 hours ahead of Buenos Aires. The best window for a call is 9 AM–1 PM in Buenos Aires, which is 1 PM–5 PM in London — a 4-hour overlap inside 9 AM–5 PM on both sides. Clocks change on October 25, 2026, which briefly shifts the gap between Buenos Aires and London — the converter on this page always reflects the correct offset for the date you pick.

• When it's 9:00 AM in Buenos Aires, it's 1:00 PM in London.
• When it's 9:00 AM in London, it's 5:00 AM in Buenos Aires.

London is currently 4 hours ahead of Buenos Aires.

The 9 AM – 5 PM business windows in Buenos Aires and London overlap for 4 hours. 9 AM–1 PM in Buenos Aires is 1 PM–5 PM in London. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.

On October 25, 2026, London shifts for daylight saving. After that, London will be 3 hours ahead of Buenos Aires (currently 4 hours ahead of Buenos Aires). The converter and the tables above always reflect the correct offset for the date you pick.

• Buenos Aires does not observe daylight saving time.
• London is currently observing daylight saving time.

Frequently asked questions

Is London ahead of or behind Buenos Aires?

London is 4 hours ahead of Buenos Aires.

How many hours ahead of Buenos Aires is London?

London is 4 hours ahead of Buenos Aires.

What time is 9 AM in Buenos Aires in London?

9:00 AM in Buenos Aires is 1:00 PM in London.

What time is noon in Buenos Aires in London?

12:00 PM in Buenos Aires is 4:00 PM in London.

What time is 5 PM in Buenos Aires in London?

5:00 PM in Buenos Aires is 9:00 PM in London. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in Buenos Aires in London?

3:00 PM in Buenos Aires is 7:00 PM in London.

Is Buenos Aires currently observing daylight saving time?

Buenos Aires does not observe daylight saving time — its UTC offset stays the same all year.

Is London currently observing daylight saving time?

London is currently observing daylight saving time (summer time).

Do Buenos Aires and London observe daylight saving?

On October 25, 2026, London shifts for daylight saving. After that, London will be 3 hours ahead of Buenos Aires (currently 4 hours ahead of Buenos Aires). The converter and the tables above always reflect the correct offset for the date you pick.

When is the best time to call London from Buenos Aires?

Aim for 9 AM–1 PM in Buenos Aires, which is 1 PM–5 PM in London.

When is the best time to call Buenos Aires from London?

Aim for 1 PM–5 PM in London, which is 9 AM–1 PM in Buenos Aires.

Buenos Aires (ART) to London (BST) — how do I convert quickly?

Add 4 hours to Buenos Aires local time to get London local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

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