Porto to Castle Rock time converter

Castle Rock is 7 hours behind Porto. When it is 9:00 AM in Porto, it is 2:00 AM in Castle Rock.

Porto WEST

Wednesday, October 21, 2026

Castle Rock MDT

Tuesday, October 20, 2026

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

Porto to Castle Rock conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 25, 2026: -7h
  • Oct 25, 2026 – Nov 1, 2026: -6h
  • Nov 1, 2026 – Mar 14, 2027: -7h
  • Mar 14, 2027 – Mar 28, 2027: -6h
  • Mar 28, 2027 – Oct 21, 2027: -7h

Distance

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

More conversions

Castle Rock 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 Castle RockLondon to Castle RockLos Angeles to Castle RockChicago to Castle RockToronto to Castle RockSão Paulo to Castle RockParis to Castle RockBerlin to Castle RockMoscow to Castle RockDubai to Castle RockNew Delhi to Castle RockBangkok to Castle Rock

Questions and answers

What is the time difference between Porto and Castle Rock?

Castle Rock is 7 hours behind Porto.

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

When it is 9:00 AM in Porto, it is 2:00 AM in Castle Rock.

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

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

Does the time difference between Porto and Castle Rock change?

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