Time Difference Between United Kingdom and Argentina
As of 31 August 2026, Argentina is 4 hours behind United Kingdom. That number is not constant. Over the course of a year, because of daylight saving changes, Buenos Aires, Argentina ranges from 4 hours behind to 3 hours behind relative to London, United Kingdom. The calculator below is always up to date.
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London, United Kingdom
23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
Buenos Aires, Argentina
-4h19:34
Mon, Aug 31, 2026
UTC-3 · America/Argentina/Buenos_Aires
Argentina is 4 hours behind United Kingdom.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| United Kingdom | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
| Argentina | Monday, August 31, 2026 | America/Argentina/Buenos_Aires | UTC-3 | Not observed |
Hour by hour: United Kingdom to Argentina
Every hour of today in United Kingdom and what it is in Argentina. Highlighted rows fall inside Argentina working hours (09:00–18:00).
| United Kingdom | Argentina |
|---|---|
| 00:00 | 20:00prev day |
| 01:00 | 21:00prev day |
| 02:00 | 22:00prev day |
| 03:00 | 23:00prev day |
| 04:00 | 00:00 |
| 05:00 | 01:00 |
| 06:00 | 02:00 |
| 07:00 | 03:00 |
| 08:00 | 04:00 |
| 09:00 | 05:00 |
| 10:00 | 06:00 |
| 11:00 | 07:00 |
| United Kingdom | Argentina |
|---|---|
| 12:00 | 08:00 |
| 13:00 | 09:00 |
| 14:00 | 10:00 |
| 15:00 | 11:00 |
| 16:00 | 12:00 |
| 17:00 | 13:00 |
| 18:00 | 14:00 |
| 19:00 | 15:00 |
| 20:00 | 16:00 |
| 21:00 | 17:00 |
| 22:00 | 18:00 |
| 23:00 | 19:00 |
Best time to call or meet
Overlapping working hours
13:00–18:00 in United Kingdom (09:00–14:00 in Argentina)
Both places are inside 09:00–18:00 for 5 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
12:00–21:00 in United Kingdom (08:00–17:00 in Argentina)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
United Kingdom puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, Argentina is 3 hours behind United Kingdom — instead of 4 hours behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
United Kingdom and Argentina: common questions
What is the time difference between United Kingdom and Argentina?
As of 31 August 2026, Argentina is 4 hours behind United Kingdom. The gap is not fixed: across the year, Argentina ranges from 4 hours behind to 3 hours behind relative to United Kingdom, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in United Kingdom, what time is it in Argentina?
It is 05:00 AM in Buenos Aires, Argentina. Use the time field in the calculator above to check any other hour.
Is Argentina ahead of or behind United Kingdom?
Argentina is behind United Kingdom by 4 hours at the moment. In practical terms, the working day in Argentina starts and ends later in United Kingdom terms.
Do United Kingdom and Argentina observe daylight saving time?
United Kingdom changes its clocks twice a year; Argentina does not. The difference therefore shifts by an hour when United Kingdom switches: across the year, Argentina ranges from 4 hours behind to 3 hours behind relative to United Kingdom.
What is the best time to call Argentina from United Kingdom?
Working hours overlap between 13:00 and 18:00 United Kingdom time, which is 09:00 to 14:00 in Argentina. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for London, United Kingdom (UTC+1) and Buenos Aires, Argentina (UTC-3) were generated on Monday, August 31, 2026 UTC and refresh in your browser.