Porto to Petaluma time converter

Petaluma is 8 hours behind Porto. When it is 9:00 AM in Porto, it is 1:00 AM in Petaluma.

Porto WEST

Tuesday, October 20, 2026

Petaluma PDT

Tuesday, October 20, 2026

Porto
Portugal
Tue, Oct 20
WESTUTC+1
Petaluma
California, United States
Tue, Oct 20
PDTUTC-7-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Petaluma conversion table

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

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

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in Porto (9:00 AM – 10:00 AM in Petaluma).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Nov 1, 2026: -7h
  • Nov 1, 2026 – Mar 14, 2027: -8h
  • Mar 14, 2027 – Mar 28, 2027: -7h
  • Mar 28, 2027 – Oct 20, 2027: -8h

Distance

Porto and Petaluma are 8,943 km (5,557 miles) apart in a straight line.

More conversions

Petaluma 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 PetalumaLondon to PetalumaLos Angeles to PetalumaChicago to PetalumaToronto to PetalumaSão Paulo to PetalumaParis to PetalumaBerlin to PetalumaMoscow to PetalumaDubai to PetalumaNew Delhi to PetalumaBangkok to Petaluma

Questions and answers

What is the time difference between Porto and Petaluma?

Petaluma is 8 hours behind Porto.

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

When it is 9:00 AM in Porto, it is 1:00 AM in Petaluma.

When is the best time to call Petaluma from Porto?

Both sides are at work from 5:00 PM – 6:00 PM in Porto (9:00 AM – 10:00 AM in Petaluma).

Does the time difference between Porto and Petaluma change?

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