Porto to Castro time converter

Castro is 4 hours behind Porto. When it is 9:00 AM in Porto, it is 5:00 AM in Castro.

Porto WEST

Tuesday, October 20, 2026

Castro CLST

Tuesday, October 20, 2026

Porto
Portugal
Tue, Oct 20
WESTUTC+1
Castro
Chile
Tue, Oct 20
CLSTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Castro conversion table

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

PortoCastro
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 Porto (9:00 AM – 2:00 PM in Castro).

Daylight saving time and the difference

The difference changes during the year because Porto and Castro switch clocks on different dates:

  • Oct 20, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Apr 4, 2027: -4h
  • Apr 4, 2027 – Sep 5, 2027: -5h
  • Sep 5, 2027 – Oct 20, 2027: -4h

Distance

Porto and Castro are 11,362 km (7,060 miles) apart in a straight line.

More conversions

Castro to PortoPorto to New YorkPorto to LondonPorto to Los AngelesPorto to ChicagoPorto to TorontoPorto to São PauloPorto to ParisPorto to BerlinPorto to MoscowPorto to DubaiPorto to New DelhiPorto to Bangkok
New York to CastroLondon to CastroLos Angeles to CastroChicago to CastroToronto to CastroSão Paulo to CastroParis to CastroBerlin to CastroMoscow to CastroDubai to CastroNew Delhi to CastroBangkok to Castro

Questions and answers

What is the time difference between Porto and Castro?

Castro is 4 hours behind Porto.

What time is it in Castro when it is 9 AM in Porto?

When it is 9:00 AM in Porto, it is 5:00 AM in Castro.

When is the best time to call Castro from Porto?

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

Does the time difference between Porto and Castro change?

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