Santo Tomé to Porto time converter

Porto is 4 hours ahead of Santo Tomé. When it is 9:00 AM in Santo Tomé, it is 1:00 PM in Porto.

Santo Tomé ART

Wednesday, October 21, 2026

Porto WEST

Wednesday, October 21, 2026

Santo Tomé
Argentina
Wed, Oct 21
ARTUTC-3
Porto
Portugal
Wed, Oct 21
WESTUTC+1+4h
Finding your time zone…
Shared working hours (9:00–18:00)

Santo Tomé to Porto conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 24, 2026: +4h
  • Oct 24, 2026 – Mar 27, 2027: +3h
  • Mar 27, 2027 – Oct 21, 2027: +4h

Distance

Santo Tomé and Porto are 9,703 km (6,029 miles) apart in a straight line.

More conversions

Porto to Santo ToméSanto Tomé to New YorkSanto Tomé to LondonSanto Tomé to Los AngelesSanto Tomé to ChicagoSanto Tomé to TorontoSanto Tomé to São PauloSanto Tomé to ParisSanto Tomé to BerlinSanto Tomé to MoscowSanto Tomé to DubaiSanto Tomé to New DelhiSanto Tomé to Bangkok
New York to PortoLondon to PortoLos Angeles to PortoChicago to PortoToronto to PortoSão Paulo to PortoParis to PortoBerlin to PortoMoscow to PortoDubai to PortoNew Delhi to PortoBangkok to Porto

Questions and answers

What is the time difference between Santo Tomé and Porto?

Porto is 4 hours ahead of Santo Tomé.

What time is it in Porto when it is 9 AM in Santo Tomé?

When it is 9:00 AM in Santo Tomé, it is 1:00 PM in Porto.

When is the best time to call Porto from Santo Tomé?

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

Does the time difference between Santo Tomé and Porto change?

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