Porto to Sumidouro time converter

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

Porto WEST

Tuesday, October 20, 2026

Sumidouro BRT

Monday, October 19, 2026

Porto
Portugal
Tue, Oct 20
WESTUTC+1
Sumidouro
Rio de Janeiro, Brazil
Mon, Oct 19
BRTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Sumidouro conversion table

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

PortoSumidouro
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 Sumidouro).

Daylight saving time and the difference

The difference changes during the year because Porto and Sumidouro 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

Porto and Sumidouro are 7,857 km (4,882 miles) apart in a straight line.

More conversions

Sumidouro 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 SumidouroLondon to SumidouroLos Angeles to SumidouroChicago to SumidouroToronto to SumidouroSão Paulo to SumidouroParis to SumidouroBerlin to SumidouroMoscow to SumidouroDubai to SumidouroNew Delhi to SumidouroBangkok to Sumidouro

Questions and answers

What is the time difference between Porto and Sumidouro?

Sumidouro is 4 hours behind Porto.

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

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

When is the best time to call Sumidouro from Porto?

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

Does the time difference between Porto and Sumidouro change?

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