Tokyo to Viana do Castelo time converter

Viana do Castelo is 8 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 1:00 AM in Viana do Castelo.

Tokyo JST

Tuesday, October 20, 2026

Viana do Castelo WEST

Tuesday, October 20, 2026

Tokyo
Japan
Tue, Oct 20
JSTUTC+9
Viana do Castelo
Portugal
Tue, Oct 20
WESTUTC+1-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Viana do Castelo conversion table

Every hour of today in Tokyo and the matching time in Viana do Castelo. Light rows are typical working hours (9:00–18:00).

TokyoViana do Castelo
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 Tokyo (9:00 AM – 10:00 AM in Viana do Castelo).

Daylight saving time and the difference

The difference changes during the year because Tokyo and Viana do Castelo switch clocks on different dates:

  • Oct 20, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Mar 28, 2027: -9h
  • Mar 28, 2027 – Oct 20, 2027: -8h

Distance

Tokyo and Viana do Castelo are 10,833 km (6,731 miles) apart in a straight line.

More conversions

Viana do Castelo to TokyoTokyo to New YorkTokyo to LondonTokyo to Los AngelesTokyo to ChicagoTokyo to TorontoTokyo to São PauloTokyo to ParisTokyo to BerlinTokyo to MoscowTokyo to DubaiTokyo to New DelhiTokyo to Bangkok
New York to Viana do CasteloLondon to Viana do CasteloLos Angeles to Viana do CasteloChicago to Viana do CasteloToronto to Viana do CasteloSão Paulo to Viana do CasteloParis to Viana do CasteloBerlin to Viana do CasteloMoscow to Viana do CasteloDubai to Viana do CasteloNew Delhi to Viana do CasteloBangkok to Viana do Castelo

Questions and answers

What is the time difference between Tokyo and Viana do Castelo?

Viana do Castelo is 8 hours behind Tokyo.

What time is it in Viana do Castelo when it is 9 AM in Tokyo?

When it is 9:00 AM in Tokyo, it is 1:00 AM in Viana do Castelo.

When is the best time to call Viana do Castelo from Tokyo?

Both sides are at work from 5:00 PM – 6:00 PM in Tokyo (9:00 AM – 10:00 AM in Viana do Castelo).

Does the time difference between Tokyo and Viana do Castelo change?

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