Uonuma to Porto time converter

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

Uonuma JST

Wednesday, October 21, 2026

Porto WEST

Tuesday, October 20, 2026

Uonuma
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)

Uonuma to Porto conversion table

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

UonumaPorto
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 Uonuma (9:00 AM – 10:00 AM in Porto).

Daylight saving time and the difference

The difference changes during the year because Uonuma 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

Uonuma and Porto are 10,695 km (6,646 miles) apart in a straight line.

More conversions

Porto to UonumaUonuma to New YorkUonuma to LondonUonuma to Los AngelesUonuma to ChicagoUonuma to TorontoUonuma to São PauloUonuma to ParisUonuma to BerlinUonuma to MoscowUonuma to DubaiUonuma to New DelhiUonuma 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 Uonuma and Porto?

Porto is 8 hours behind Uonuma.

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

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

When is the best time to call Porto from Uonuma?

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

Does the time difference between Uonuma 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.