Masaki to Porto time converter

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

Masaki JST

Wednesday, October 21, 2026

Porto WEST

Tuesday, October 20, 2026

Masaki
Japan
Wed, Oct 21
JSTUTC+9
Porto
Portugal
Tue, Oct 20
WESTUTC+1-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Masaki to Porto conversion table

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

MasakiPorto
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 Masaki (9:00 AM – 10:00 AM in Porto).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Mar 28, 2027: -9h
  • Mar 28, 2027 – Oct 21, 2027: -8h

Distance

Masaki and Porto are 10,791 km (6,705 miles) apart in a straight line.

More conversions

Porto to MasakiMasaki to New YorkMasaki to LondonMasaki to Los AngelesMasaki to ChicagoMasaki to TorontoMasaki to São PauloMasaki to ParisMasaki to BerlinMasaki to MoscowMasaki to DubaiMasaki to New DelhiMasaki to Bangkok
New York to PortoLondon to PortoLos Angeles to PortoChicago to PortoToronto to PortoSão Paulo to PortoParis to PortoBerlin to PortoMoscow to PortoDubai to PortoNew Delhi to PortoBangkok to Porto

Questions and answers

What is the time difference between Masaki and Porto?

Porto is 8 hours behind Masaki.

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

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

When is the best time to call Porto from Masaki?

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

Does the time difference between Masaki and Porto change?

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