Castro-Urdiales to Buenos Aires time converter

Buenos Aires is 5 hours behind Castro-Urdiales. When it is 9:00 AM in Castro-Urdiales, it is 4:00 AM in Buenos Aires.

Castro-Urdiales CEST

Wednesday, October 21, 2026

Buenos Aires ART

Wednesday, October 21, 2026

Castro-Urdiales
Spain
Wed, Oct 21
CESTUTC+2
Buenos Aires
Argentina
Wed, Oct 21
ARTUTC-3-5h
Finding your time zone…
Shared working hours (9:00–18:00)

Castro-Urdiales to Buenos Aires conversion table

Every hour of today in Castro-Urdiales and the matching time in Buenos Aires. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 2:00 PM – 6:00 PM in Castro-Urdiales (9:00 AM – 1:00 PM in Buenos Aires).

Daylight saving time and the difference

The difference changes during the year because Castro-Urdiales and Buenos Aires switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -5h
  • Oct 25, 2026 – Mar 28, 2027: -4h
  • Mar 28, 2027 – Oct 21, 2027: -5h

Distance

Castro-Urdiales and Buenos Aires are 10,316 km (6,410 miles) apart in a straight line.

More conversions

Buenos Aires to Castro-UrdialesCastro-Urdiales to New YorkCastro-Urdiales to LondonCastro-Urdiales to Los AngelesCastro-Urdiales to ChicagoCastro-Urdiales to TorontoCastro-Urdiales to São PauloCastro-Urdiales to ParisCastro-Urdiales to BerlinCastro-Urdiales to MoscowCastro-Urdiales to DubaiCastro-Urdiales to New DelhiCastro-Urdiales to Bangkok
New York to Buenos AiresLondon to Buenos AiresLos Angeles to Buenos AiresChicago to Buenos AiresToronto to Buenos AiresSão Paulo to Buenos AiresParis to Buenos AiresBerlin to Buenos AiresMoscow to Buenos AiresDubai to Buenos AiresNew Delhi to Buenos AiresBangkok to Buenos Aires

Questions and answers

What is the time difference between Castro-Urdiales and Buenos Aires?

Buenos Aires is 5 hours behind Castro-Urdiales.

What time is it in Buenos Aires when it is 9 AM in Castro-Urdiales?

When it is 9:00 AM in Castro-Urdiales, it is 4:00 AM in Buenos Aires.

When is the best time to call Buenos Aires from Castro-Urdiales?

Both sides are at work from 2:00 PM – 6:00 PM in Castro-Urdiales (9:00 AM – 1:00 PM in Buenos Aires).

Does the time difference between Castro-Urdiales and Buenos Aires change?

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