Lisbon to Boston time converter

Boston is 5 hours behind Lisbon. When it is 9:00 AM in Lisbon, it is 4:00 AM in Boston.

Lisbon WEST

Saturday, October 17, 2026

Boston EDT

Saturday, October 17, 2026

Lisbon
Portugal
Sat, Oct 17
WESTUTC+1
Boston
Massachusetts, United States
Sat, Oct 17
EDTUTC-4-5h
Finding your time zone…
Shared working hours (9:00–18:00)

Lisbon to Boston conversion table

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

LisbonBoston
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 Lisbon (9:00 AM – 1:00 PM in Boston).

Daylight saving time and the difference

The difference changes during the year because Lisbon and Boston switch clocks on different dates:

  • Oct 17, 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 17, 2027: -5h

Distance

Lisbon and Boston are 5,130 km (3,188 miles) apart in a straight line.

More conversions

Boston to LisbonLisbon to New YorkLisbon to LondonLisbon to Los AngelesLisbon to ChicagoLisbon to TorontoLisbon to São PauloLisbon to ParisLisbon to BerlinLisbon to MoscowLisbon to DubaiLisbon to New DelhiLisbon to Bangkok
New York to BostonLondon to BostonLos Angeles to BostonChicago to BostonToronto to BostonSão Paulo to BostonParis to BostonBerlin to BostonMoscow to BostonDubai to BostonNew Delhi to BostonBangkok to Boston

Questions and answers

What is the time difference between Lisbon and Boston?

Boston is 5 hours behind Lisbon.

What time is it in Boston when it is 9 AM in Lisbon?

When it is 9:00 AM in Lisbon, it is 4:00 AM in Boston.

When is the best time to call Boston from Lisbon?

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

Does the time difference between Lisbon and Boston change?

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