Time difference between London and Mar del Plata

Mar del Plata is 4 hours behind London.

Europe/London America/Argentina/Buenos_Aires still the previous day

Local time in both cities

London · United Kingdom
02:15
Monday, 21 September 2026
Europe/London · UTC+01:00
Mar del Plata · Argentina
22:15
Sunday, 20 September 2026
America/Argentina/Buenos_Aires · UTC-03:00

Mar del Plata is 4 hours behind London.

still the previous day

Time zones

LondonEurope/London · UTC+01:00
Mar del PlataAmerica/Argentina/Buenos_Aires · UTC-03:00

London is currently on daylight saving time (UTC+01:00). Next change: 2026-10-25 01:00.

Mar del Plata does not observe daylight saving and stays on UTC-03:00 all year.

Hour-by-hour conversion

Calculated for 2026-09-21 local time in London. The two places start and end daylight saving on different dates, so another day can give a different result.

London (source) Mar del Plata (target)
00:00 20:00 prev day
01:00 21:00 prev day
02:00 22:00 prev day
03:00 23:00 prev 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
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

FAQ

How many hours apart are London and Mar del Plata right now?
The answer at the top of the page is calculated for the current moment and states which side is ahead. The gap changes during the year, because the two places usually start and end daylight saving on different dates.
Is this difference the same all year?
Not necessarily. London uses Europe/London and Mar del Plata uses America/Argentina/Buenos_Aires; if either observes daylight saving, the gap shifts during the year. Use “Convert a specific date and time” below to calculate it for a given day.
How do I read the conversion table?
The left column lists each whole hour in London; the right column is the local time in Mar del Plata at that same instant, with date rollovers marked. On the day clocks jump forward, some hours do not exist locally — the table says so instead of showing a plausible but wrong value.

Both cities