Porto to Merrimack time converter

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

Porto WEST

Tuesday, October 20, 2026

Merrimack EDT

Tuesday, October 20, 2026

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

Porto to Merrimack conversion table

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

PortoMerrimack
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 Merrimack).

Daylight saving time and the difference

The difference changes during the year because Porto and Merrimack 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

Distance

Porto and Merrimack are 5,075 km (3,153 miles) apart in a straight line.

More conversions

Merrimack 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 MerrimackLondon to MerrimackLos Angeles to MerrimackChicago to MerrimackToronto to MerrimackSão Paulo to MerrimackParis to MerrimackBerlin to MerrimackMoscow to MerrimackDubai to MerrimackNew Delhi to MerrimackBangkok to Merrimack

Questions and answers

What is the time difference between Porto and Merrimack?

Merrimack is 5 hours behind Porto.

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

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

When is the best time to call Merrimack from Porto?

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

Does the time difference between Porto and Merrimack change?

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