Castle Rock to Porto time converter

Porto is 7 hours ahead of Castle Rock. When it is 9:00 AM in Castle Rock, it is 4:00 PM in Porto.

Castle Rock MDT

Tuesday, October 20, 2026

Porto WEST

Wednesday, October 21, 2026

Castle Rock
Colorado, United States
Tue, Oct 20
MDTUTC-6
Porto
Portugal
Wed, Oct 21
WESTUTC+1+7h
Finding your time zone…
Shared working hours (9:00–18:00)

Castle Rock to Porto conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 11:00 AM in Castle Rock (4:00 PM – 6:00 PM in Porto).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 24, 2026: +7h
  • Oct 24, 2026 – Nov 1, 2026: +6h
  • Nov 1, 2026 – Mar 14, 2027: +7h
  • Mar 14, 2027 – Mar 27, 2027: +6h
  • Mar 27, 2027 – Oct 20, 2027: +7h

Distance

Castle Rock and Porto are 7,702 km (4,786 miles) apart in a straight line.

More conversions

Porto to Castle RockCastle Rock to New YorkCastle Rock to LondonCastle Rock to Los AngelesCastle Rock to ChicagoCastle Rock to TorontoCastle Rock to São PauloCastle Rock to ParisCastle Rock to BerlinCastle Rock to MoscowCastle Rock to DubaiCastle Rock to New DelhiCastle Rock to Bangkok
New York to PortoLondon to PortoLos Angeles to PortoChicago to PortoToronto to PortoSão Paulo to PortoParis to PortoBerlin to PortoMoscow to PortoDubai to PortoNew Delhi to PortoBangkok to Porto

Questions and answers

What is the time difference between Castle Rock and Porto?

Porto is 7 hours ahead of Castle Rock.

What time is it in Porto when it is 9 AM in Castle Rock?

When it is 9:00 AM in Castle Rock, it is 4:00 PM in Porto.

When is the best time to call Porto from Castle Rock?

Both sides are at work from 9:00 AM – 11:00 AM in Castle Rock (4:00 PM – 6:00 PM in Porto).

Does the time difference between Castle Rock and Porto change?

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