London to Castelar time converter

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

London BST

Monday, October 19, 2026

Castelar ART

Monday, October 19, 2026

London
United Kingdom
Mon, Oct 19
BSTUTC+1
Castelar
Argentina
Mon, Oct 19
ARTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Castelar conversion table

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

LondonCastelar
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 Castelar).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 19, 2027: -4h

Distance

London and Castelar are 11,145 km (6,925 miles) apart in a straight line.

More conversions

Castelar to LondonLondon to New YorkLondon to Los AngelesLondon to ChicagoLondon to TorontoLondon to São PauloLondon to ParisLondon to BerlinLondon to MoscowLondon to DubaiLondon to New DelhiLondon to BangkokLondon to Singapore
New York to CastelarLos Angeles to CastelarChicago to CastelarToronto to CastelarSão Paulo to CastelarParis to CastelarBerlin to CastelarMoscow to CastelarDubai to CastelarNew Delhi to CastelarBangkok to CastelarSingapore to Castelar

Questions and answers

What is the time difference between London and Castelar?

Castelar is 4 hours behind London.

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

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

When is the best time to call Castelar from London?

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

Does the time difference between London and Castelar change?

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