GMT to ART: UK–Argentina time difference and best meeting times
London to Buenos Aires time · GMT/BST to ART
London and Buenos Aires share 4h of 9-to-5 working time for most of the year: 13:00–17:00 in London = 09:00–13:00 in Buenos Aires.
London's afternoon overlaps with the Buenos Aires morning.
Time difference
Buenos Aires is 4h behind London
Most of the year; see below for other dates.
Shared working hours
4h
13:00–17:00 in London = 09:00–13:00 in Buenos Aires
Fairest 1-hour meeting
13:00 in London = 09:00 in Buenos Aires
London stays within 09:00–17:00, Buenos Aires stays within 09:00–17:00.
Open London and Buenos Aires in Team Time MapChange the hours, add teammates and share the link.
How the gap changes in 2027
- 28 Mar – 30 Oct (217 days): Buenos Aires is 4h behind London. Shared hours: 13:00–17:00 in London = 09:00–13:00 in Buenos Aires.
- 1 Jan – 27 Mar, 31 Oct – 31 Dec (148 days): Buenos Aires is 3h behind London. Shared hours: 12:00–17:00 in London = 09:00–14:00 in Buenos Aires.
- London:
- UTC+0 standard, UTC+1 daylight saving
- Buenos Aires:
- UTC−3 all year (no daylight saving)
- 28 Mar: London clocks go forward 1h
- 31 Oct: London clocks go back 1h
Hour-by-hour: London to Buenos Aires
Working hours are 09:00–17:00; night is 23:00–07:00.
| London | Buenos Aires28 Mar – 30 Oct | Buenos Aires1 Jan – 27 Mar, 31 Oct – 31 Dec |
|---|---|---|
| 00:00 | 20:00 (previous day) | 21:00 (previous day) |
| 01:00 | 21:00 (previous day) | 22:00 (previous day) |
| 02:00 | 22:00 (previous day) | 23:00 (previous day) |
| 03:00 | 23:00 (previous day) | 00:00 |
| 04:00 | 00:00 | 01:00 |
| 05:00 | 01:00 | 02:00 |
| 06:00 | 02:00 | 03:00 |
| 07:00 | 03:00 | 04:00 |
| 08:00 | 04:00 | 05:00 |
| 09:00 | 05:00 | 06:00 |
| 10:00 | 06:00 | 07:00 |
| 11:00 | 07:00 | 08:00 |
| 12:00 | 08:00 | 09:00 |
| 13:00 | 09:00 | 10:00 |
| 14:00 | 10:00 | 11:00 |
| 15:00 | 11:00 | 12:00 |
| 16:00 | 12:00 | 13:00 |
| 17:00 | 13:00 | 14:00 |
| 18:00 | 14:00 | 15:00 |
| 19:00 | 15:00 | 16:00 |
| 20:00 | 16:00 | 17:00 |
| 21:00 | 17:00 | 18:00 |
| 22:00 | 18:00 | 19:00 |
| 23:00 | 19:00 | 20:00 |
Tips for UK and Argentina teams
- Argentina doesn't use daylight saving time, so the gap moves by an hour whenever London changes its clocks. Recurring meetings set in one place's time will shift for the other.
- There's enough shared time for a daily meeting. Booking it in the middle of the window leaves room for follow-ups on both sides.
Based on 09:00–17:00 working days in London and Buenos Aires, using 2027 clock-change dates. Real schedules vary, so confirm with your team.