Porto to São Marcos time converter

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

Porto WEST

Wednesday, October 21, 2026

São Marcos BRT

Wednesday, October 21, 2026

Porto
Portugal
Wed, Oct 21
WESTUTC+1
São Marcos
Rio Grande do Sul, Brazil
Wed, Oct 21
BRTUTC-3-4h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to São Marcos conversion table

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

PortoSão Marcos
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 São Marcos).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 21, 2027: -4h

Distance

Porto and São Marcos are 8,937 km (5,553 miles) apart in a straight line.

More conversions

São Marcos 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 São MarcosLondon to São MarcosLos Angeles to São MarcosChicago to São MarcosToronto to São MarcosSão Paulo to São MarcosParis to São MarcosBerlin to São MarcosMoscow to São MarcosDubai to São MarcosNew Delhi to São MarcosBangkok to São Marcos

Questions and answers

What is the time difference between Porto and São Marcos?

São Marcos is 4 hours behind Porto.

What time is it in São Marcos when it is 9 AM in Porto?

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

When is the best time to call São Marcos from Porto?

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

Does the time difference between Porto and São Marcos change?

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