Porto to Karuizawa time converter

Karuizawa is 8 hours ahead of Porto. When it is 9:00 AM in Porto, it is 5:00 PM in Karuizawa.

Porto WEST

Wednesday, October 21, 2026

Karuizawa JST

Thursday, October 22, 2026

Porto
Portugal
Wed, Oct 21
WESTUTC+1
Karuizawa
Japan
Thu, Oct 22
JSTUTC+9+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Karuizawa conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

The difference changes during the year because Porto and Karuizawa 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

Porto and Karuizawa are 10,774 km (6,695 miles) apart in a straight line.

More conversions

Karuizawa 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 KaruizawaLondon to KaruizawaLos Angeles to KaruizawaChicago to KaruizawaToronto to KaruizawaSão Paulo to KaruizawaParis to KaruizawaBerlin to KaruizawaMoscow to KaruizawaDubai to KaruizawaNew Delhi to KaruizawaBangkok to Karuizawa

Questions and answers

What is the time difference between Porto and Karuizawa?

Karuizawa is 8 hours ahead of Porto.

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

When it is 9:00 AM in Porto, it is 5:00 PM in Karuizawa.

When is the best time to call Karuizawa from Porto?

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

Does the time difference between Porto and Karuizawa change?

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