Quick answer. Madrid is five hours ahead of Buenos Aires before Spain changes its clocks on 25 October 2026 and four hours ahead afterwards.
Current time in Madrid and Buenos Aires
Madrid
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Buenos Aires
Calculated from your device clock and browser time-zone data. This is not an independent clock-synchronisation service. For a future appointment, use its actual date.
Convert a specific appointment → · Download the 72-row hourly table (CSV)
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Open the tools with Madrid and Buenos Aires already selected. Review the example date and availability before choosing a start.
Find a shared meeting time · Check four weekly sessions across the clock change
Before and after 25 October
| Date in 2026 | Madrid | Buenos Aires | Difference |
|---|---|---|---|
| 24 October 2026 | 18:00 | 13:00 | Madrid +5 h |
| 26 October 2026 | 18:00 | 14:00 | Madrid +4 h |
| 2 November 2026 | 18:00 | 14:00 | Madrid +4 h |
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Find the same instant
By date · 2026The independent event lasts 60 minutes. Review the date, time and duration before importing.
A Spanish afternoon can coincide with an Argentine morning
The Argentine reference is Buenos Aires, identified as America/Argentina/Buenos_Aires. The calculation pairs that specific zone with Madrid. If your contact is elsewhere, confirm their local zone before reusing an equivalence.
On 24 October, 15:00 in Madrid means 10:00 in Buenos Aires. On Monday 26 October, the same Spanish start means 11:00 in Buenos Aires. Announce the converted time of the first session after Sunday if you run a weekly class or meeting.
To preserve a 10:00 Buenos Aires start after the change, schedule 14:00 in Madrid. Keeping 15:00 in Madrid instead moves the Argentine start. Both rules are coherent when every participant understands which city controls the invitation.
Hourly table for 26 October 2026
The first column is Madrid local time. Check the destination date in the last column.
| Madrid | Buenos Aires | Destination date |
|---|---|---|
| 08:00 | 04:00 | 26 October 2026 |
| 09:00 | 05:00 | 26 October 2026 |
| 10:00 | 06:00 | 26 October 2026 |
| 11:00 | 07:00 | 26 October 2026 |
| 12:00 | 08:00 | 26 October 2026 |
| 13:00 | 09:00 | 26 October 2026 |
| 14:00 | 10:00 | 26 October 2026 |
| 15:00 | 11:00 | 26 October 2026 |
| 16:00 | 12:00 | 26 October 2026 |
| 17:00 | 13:00 | 26 October 2026 |
| 18:00 | 14:00 | 26 October 2026 |
| 19:00 | 15:00 | 26 October 2026 |
| 20:00 | 16:00 | 26 October 2026 |
Starting from Buenos Aires
Read the first column as Buenos Aires local time on each stated date. The Madrid columns include the destination date, including any rollover.
| Buenos Aires clock | Madrid · origin 24 October | Madrid · origin 26 October |
|---|---|---|
| 09:00 | 14:00 · 24 October 2026 | 13:00 · 26 October 2026 |
| 10:00 | 15:00 · 24 October 2026 | 14:00 · 26 October 2026 |
| 12:00 | 17:00 · 24 October 2026 | 16:00 · 26 October 2026 |
| 15:00 | 20:00 · 24 October 2026 | 19:00 · 26 October 2026 |
| 18:00 | 23:00 · 24 October 2026 | 22:00 · 26 October 2026 |
| 20:00 | 01:00 · 25 October 2026 | 00:00 · 27 October 2026 |
Convert from Buenos Aires to Madrid →
The time difference throughout 2026
These periods cover the Madrid calendar year. Starts are inclusive and ends are exclusive. Boundary times are written in Madrid local time with their UTC offset so that repeated hours remain unambiguous. A constant difference can hide a simultaneous clock change in both cities.
| From, inclusive | Until, exclusive | UTC Madrid | UTC Buenos Aires | Difference |
|---|---|---|---|---|
| 1 January 2026 · 00:00 (UTC+01:00) | 29 March 2026 · 03:00 (UTC+02:00) | UTC+01:00 | UTC−03:00 | Madrid +4 h |
| 29 March 2026 · 03:00 (UTC+02:00) | 25 October 2026 · 02:00 (UTC+01:00) | UTC+02:00 | UTC−03:00 | Madrid +5 h |
| 25 October 2026 · 02:00 (UTC+01:00) | 1 January 2027 · 00:00 (UTC+01:00) | UTC+01:00 | UTC−03:00 | Madrid +4 h |
The CSV contains every hour of 24 October, 26 October and 2 November, with each destination date and both UTC offsets in minutes. It is a reference table, not a live feed.
Common questions
Is Spain always four hours ahead of Argentina?
No. Madrid and Buenos Aires are five hours apart during Madrid’s summer-time period in 2026 and four hours apart during its winter-time period.
What should a clear invitation say?
For example: 26 October 2026, 15:00 Madrid / 11:00 Buenos Aires. Include the date and both cities.
Sources and calculation
Tables are calculated using named IANA zones with Intl. Read the method, scope and limitations.