Porto to Port Arthur time converter

Port Arthur is 6 hours behind Porto. When it is 9:00 AM in Porto, it is 3:00 AM in Port Arthur.

Porto WEST

Wednesday, October 21, 2026

Port Arthur CDT

Wednesday, October 21, 2026

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

Porto to Port Arthur conversion table

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

PortoPort Arthur
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 Port Arthur).

Daylight saving time and the difference

The difference changes during the year because Porto and Port Arthur 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 Port Arthur are 7,517 km (4,671 miles) apart in a straight line.

More conversions

Port Arthur 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 Port ArthurLondon to Port ArthurLos Angeles to Port ArthurChicago to Port ArthurToronto to Port ArthurSão Paulo to Port ArthurParis to Port ArthurBerlin to Port ArthurMoscow to Port ArthurDubai to Port ArthurNew Delhi to Port ArthurBangkok to Port Arthur

Questions and answers

What is the time difference between Porto and Port Arthur?

Port Arthur is 6 hours behind Porto.

What time is it in Port Arthur when it is 9 AM in Porto?

When it is 9:00 AM in Porto, it is 3:00 AM in Port Arthur.

When is the best time to call Port Arthur from Porto?

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

Does the time difference between Porto and Port Arthur change?

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