Istanbul to Viseu time converter

Viseu is 2 hours behind Istanbul. When it is 9:00 AM in Istanbul, it is 7:00 AM in Viseu.

Istanbul TRT

Wednesday, October 21, 2026

Viseu WEST

Tuesday, October 20, 2026

Istanbul
Turkey
Wed, Oct 21
TRTUTC+3
Viseu
Portugal
Tue, Oct 20
WESTUTC+1-2h
Finding your time zone…
Shared working hours (9:00–18:00)

Istanbul to Viseu conversion table

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

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

Best time to call or meet

Both sides are at work from 11:00 AM – 6:00 PM in Istanbul (9:00 AM – 4:00 PM in Viseu).

Daylight saving time and the difference

The difference changes during the year because Istanbul and Viseu switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -2h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 21, 2027: -2h

Distance

Istanbul and Viseu are 3,078 km (1,913 miles) apart in a straight line.

More conversions

Viseu to IstanbulIstanbul to New YorkIstanbul to LondonIstanbul to Los AngelesIstanbul to ChicagoIstanbul to TorontoIstanbul to São PauloIstanbul to ParisIstanbul to BerlinIstanbul to MoscowIstanbul to DubaiIstanbul to New DelhiIstanbul to Bangkok
New York to ViseuLondon to ViseuLos Angeles to ViseuChicago to ViseuToronto to ViseuSão Paulo to ViseuParis to ViseuBerlin to ViseuMoscow to ViseuDubai to ViseuNew Delhi to ViseuBangkok to Viseu

Questions and answers

What is the time difference between Istanbul and Viseu?

Viseu is 2 hours behind Istanbul.

What time is it in Viseu when it is 9 AM in Istanbul?

When it is 9:00 AM in Istanbul, it is 7:00 AM in Viseu.

When is the best time to call Viseu from Istanbul?

Both sides are at work from 11:00 AM – 6:00 PM in Istanbul (9:00 AM – 4:00 PM in Viseu).

Does the time difference between Istanbul and Viseu change?

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