Porto to Bostonia time converter

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

Porto WEST

Wednesday, October 21, 2026

Bostonia PDT

Tuesday, October 20, 2026

Porto
Portugal
Wed, Oct 21
WESTUTC+1
Bostonia
California, United States
Tue, Oct 20
PDTUTC-7-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Bostonia conversion table

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

PortoBostonia
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 Bostonia).

Daylight saving time and the difference

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

  • Oct 21, 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 21, 2027: -8h

Distance

Porto and Bostonia are 9,000 km (5,592 miles) apart in a straight line.

More conversions

Bostonia 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 BostoniaLondon to BostoniaLos Angeles to BostoniaChicago to BostoniaToronto to BostoniaSão Paulo to BostoniaParis to BostoniaBerlin to BostoniaMoscow to BostoniaDubai to BostoniaNew Delhi to BostoniaBangkok to Bostonia

Questions and answers

What is the time difference between Porto and Bostonia?

Bostonia is 8 hours behind Porto.

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

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

When is the best time to call Bostonia from Porto?

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

Does the time difference between Porto and Bostonia change?

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