Porto to Kosan time converter

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

Porto WEST

Monday, October 19, 2026

Kosan KST

Tuesday, October 20, 2026

Porto
Portugal
Mon, Oct 19
WESTUTC+1
Kosan
North Korea
Tue, Oct 20
KSTUTC+9+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Kosan conversion table

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

PortoKosan
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 Kosan).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Oct 25, 2026: +8h
  • Oct 25, 2026 – Mar 28, 2027: +9h
  • Mar 28, 2027 – Oct 19, 2027: +8h

Distance

Porto and Kosan are 10,066 km (6,255 miles) apart in a straight line.

More conversions

Kosan 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 KosanLondon to KosanLos Angeles to KosanChicago to KosanToronto to KosanSão Paulo to KosanParis to KosanBerlin to KosanMoscow to KosanDubai to KosanNew Delhi to KosanBangkok to Kosan

Questions and answers

What is the time difference between Porto and Kosan?

Kosan is 8 hours ahead of Porto.

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

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

When is the best time to call Kosan from Porto?

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

Does the time difference between Porto and Kosan change?

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