Buenos Aires zone
GMT-3 (GMT-3)
London zone
GMT+1 (GMT+1)
Difference
4 hours ahead of Buenos Aires
Business overlap
4h (9-5 windows)
Working hours overlap
Each cell is one hour in Buenos Aires. Filled cells mark when 9 AM – 5 PM in Buenos Aires and London both apply.
4 hours per day
- Buenos Aires
- GMT-3
- London
- GMT+1
- Difference
- +4h
- Business overlap
- 4h
Hour-by-hour conversion
Each row shows the matching local time in London for an hour in Buenos Aires.
| Buenos Aires | London | Day | Window |
|---|---|---|---|
| 12:00 AM | 4:00 AM | same day | — |
| 1:00 AM | 5:00 AM | same day | — |
| 2:00 AM | 6:00 AM | same day | — |
| 3:00 AM | 7:00 AM | same day | — |
| 4:00 AM | 8:00 AM | same day | — |
| 5:00 AM | 9:00 AM | same day | — |
| 6:00 AM | 10:00 AM | same day | — |
| 7:00 AM | 11:00 AM | same day | — |
| 8:00 AM | 12:00 PM | same day | — |
| 9:00 AM | 1:00 PM | same day | Both 9-5 |
| 10:00 AM | 2:00 PM | same day | Both 9-5 |
| 11:00 AM | 3:00 PM | same day | Both 9-5 |
| 12:00 PM | 4:00 PM | same day | Both 9-5 |
| 1:00 PM | 5:00 PM | same day | — |
| 2:00 PM | 6:00 PM | same day | — |
| 3:00 PM | 7:00 PM | same day | — |
| 4:00 PM | 8:00 PM | same day | — |
| 5:00 PM | 9:00 PM | same day | — |
| 6:00 PM | 10:00 PM | same day | — |
| 7:00 PM | 11:00 PM | same day | — |
| 8:00 PM | 12:00 AM | next day | — |
| 9:00 PM | 1:00 AM | next day | — |
| 10:00 PM | 2:00 AM | next day | — |
| 11:00 PM | 3:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 1:00 PM in Buenos Aires time. That gives you 4 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Buenos Aires time to London time
Buenos Aires follows the America/Argentina/Buenos_Aires time zone (currently GMT-3, GMT-3), while London follows Europe/London (currently GMT+1, GMT+1). London is 4 hours ahead of Buenos Aires right now.
London observes daylight saving time, while Buenos Aires does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Buenos Aires
Does not observe daylight saving time.
London
- Spring forward · Sunday, March 29, 2026
- Fall back · Sunday, October 25, 2026
Reverse this conversion
London to Buenos Aires
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More conversions from Buenos Aires
Frequently asked questions
- How many hours is Buenos Aires from London?
- London is 4 hours ahead of Buenos Aires right now.
- What time is 9:00 AM Buenos Aires in London?
- 9:00 AM in Buenos Aires is 1:00 PM in London.
- What time is 5:00 PM Buenos Aires in London?
- 5:00 PM in Buenos Aires is 9:00 PM in London.
- When do Buenos Aires and London business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 4 hours, roughly from 9:00 AM to 1:00 PM in Buenos Aires time.
- Does daylight saving time change the difference between Buenos Aires and London?
- London observes daylight saving time while Buenos Aires does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Buenos Aires
Local time page
Time in London