Porto to Calcutta time converter

Calcutta is 1 hour ahead of Porto. When it is 9:00 AM in Porto, it is 10:00 AM in Calcutta.

Porto WEST

Tuesday, October 20, 2026

Calcutta SAST

Tuesday, October 20, 2026

Porto
Portugal
Tue, Oct 20
WESTUTC+1
Calcutta
South Africa
Tue, Oct 20
SASTUTC+2+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Calcutta conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 25, 2026: +1h
  • Oct 25, 2026 – Mar 28, 2027: +2h
  • Mar 28, 2027 – Oct 20, 2027: +1h

Distance

Porto and Calcutta are 8,423 km (5,234 miles) apart in a straight line.

More conversions

Calcutta 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 CalcuttaLondon to CalcuttaLos Angeles to CalcuttaChicago to CalcuttaToronto to CalcuttaSão Paulo to CalcuttaParis to CalcuttaBerlin to CalcuttaMoscow to CalcuttaDubai to CalcuttaNew Delhi to CalcuttaBangkok to Calcutta

Questions and answers

What is the time difference between Porto and Calcutta?

Calcutta is 1 hour ahead of Porto.

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

When it is 9:00 AM in Porto, it is 10:00 AM in Calcutta.

When is the best time to call Calcutta from Porto?

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

Does the time difference between Porto and Calcutta change?

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