Porto to Massachusetts time converter

Massachusetts is 5 hours behind Porto. When it is 9:00 AM in Porto, it is 4:00 AM in Massachusetts.

Porto WEST

Tuesday, October 20, 2026

Massachusetts EDT

Tuesday, October 20, 2026

Porto
Portugal
Tue, Oct 20
WESTUTC+1
Massachusetts
United States
Tue, Oct 20
EDTUTC-4-5h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Massachusetts conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 25, 2026: -5h
  • Oct 25, 2026 – Nov 1, 2026: -4h
  • Nov 1, 2026 – Mar 14, 2027: -5h
  • Mar 14, 2027 – Mar 28, 2027: -4h
  • Mar 28, 2027 – Oct 20, 2027: -5h

More conversions

Massachusetts 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 MassachusettsLondon to MassachusettsLos Angeles to MassachusettsChicago to MassachusettsToronto to MassachusettsSão Paulo to MassachusettsParis to MassachusettsBerlin to MassachusettsMoscow to MassachusettsDubai to MassachusettsNew Delhi to MassachusettsBangkok to Massachusetts

Questions and answers

What is the time difference between Porto and Massachusetts?

Massachusetts is 5 hours behind Porto.

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

When it is 9:00 AM in Porto, it is 4:00 AM in Massachusetts.

When is the best time to call Massachusetts from Porto?

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

Does the time difference between Porto and Massachusetts change?

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