London to Rosario time converter

Rosario is 4 hours behind London. When it is 9:00 AM in London, it is 5:00 AM in Rosario.

London BST

Tuesday, October 20, 2026

Rosario ART

Tuesday, October 20, 2026

London
United Kingdom
Tue, Oct 20
BSTUTC+1
Rosario
Argentina
Tue, Oct 20
ARTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Rosario conversion table

Every hour of today in London and the matching time in Rosario. Light rows are typical working hours (9:00–18:00).

LondonRosario
12:00 AM8:00 PM−1 day
1:00 AM9:00 PM−1 day
2:00 AM10:00 PM−1 day
3:00 AM11:00 PM−1 day
4:00 AM12:00 AM
5:00 AM1:00 AM
6:00 AM2:00 AM
7:00 AM3:00 AM
8:00 AM4:00 AM
9:00 AM5:00 AM
10:00 AM6:00 AM
11:00 AM7:00 AM
12:00 PM8:00 AM
1:00 PM9:00 AM
2:00 PM10:00 AM
3:00 PM11:00 AM
4:00 PM12:00 PM
5:00 PM1:00 PM
6:00 PM2:00 PM
7:00 PM3:00 PM
8:00 PM4:00 PM
9:00 PM5:00 PM
10:00 PM6:00 PM
11:00 PM7:00 PM

Best time to call or meet

Both sides are at work from 1:00 PM – 6:00 PM in London (9:00 AM – 2:00 PM in Rosario).

Daylight saving time and the difference

The difference changes during the year because London and Rosario switch clocks on different dates:

  • Oct 20, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 20, 2027: -4h

Distance

London and Rosario are 11,087 km (6,889 miles) apart in a straight line.

More conversions

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New York to RosarioLos Angeles to RosarioChicago to RosarioToronto to RosarioSão Paulo to RosarioParis to RosarioBerlin to RosarioMoscow to RosarioDubai to RosarioNew Delhi to RosarioBangkok to RosarioSingapore to Rosario

Questions and answers

What is the time difference between London and Rosario?

Rosario is 4 hours behind London.

What time is it in Rosario when it is 9 AM in London?

When it is 9:00 AM in London, it is 5:00 AM in Rosario.

When is the best time to call Rosario from London?

Both sides are at work from 1:00 PM – 6:00 PM in London (9:00 AM – 2:00 PM in Rosario).

Does the time difference between London and Rosario change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.