Porto to San Antonio time converter

San Antonio is 6 hours behind Porto. When it is 9:00 AM in Porto, it is 3:00 AM in San Antonio.

Porto WEST

Wednesday, October 21, 2026

San Antonio CDT

Tuesday, October 20, 2026

Porto
Portugal
Wed, Oct 21
WESTUTC+1
San Antonio
Texas, United States
Tue, Oct 20
CDTUTC-5-6h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to San Antonio conversion table

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

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

Best time to call or meet

Both sides are at work from 3:00 PM – 6:00 PM in Porto (9:00 AM – 12:00 PM in San Antonio).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -6h
  • Oct 25, 2026 – Nov 1, 2026: -5h
  • Nov 1, 2026 – Mar 14, 2027: -6h
  • Mar 14, 2027 – Mar 28, 2027: -5h
  • Mar 28, 2027 – Oct 21, 2027: -6h

Distance

Porto and San Antonio are 7,901 km (4,909 miles) apart in a straight line.

More conversions

San Antonio 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 San AntonioLondon to San AntonioLos Angeles to San AntonioChicago to San AntonioToronto to San AntonioSão Paulo to San AntonioParis to San AntonioBerlin to San AntonioMoscow to San AntonioDubai to San AntonioNew Delhi to San AntonioBangkok to San Antonio

Questions and answers

What is the time difference between Porto and San Antonio?

San Antonio is 6 hours behind Porto.

What time is it in San Antonio when it is 9 AM in Porto?

When it is 9:00 AM in Porto, it is 3:00 AM in San Antonio.

When is the best time to call San Antonio from Porto?

Both sides are at work from 3:00 PM – 6:00 PM in Porto (9:00 AM – 12:00 PM in San Antonio).

Does the time difference between Porto and San Antonio change?

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