Porto to Casa Nova time converter
Casa Nova is 4 hours behind Porto. When it is 9:00 AM in Porto, it is 5:00 AM in Casa Nova.
11:34 AM in Porto, Tuesday, October 20, 2026
Porto to Casa Nova conversion table
Every hour of today in Porto and the matching time in Casa Nova. Light rows are typical working hours (9:00–18:00).
| Porto | Casa Nova |
|---|---|
| 12:00 AM | 8:00 PM−1 day |
| 1:00 AM | 9:00 PM−1 day |
| 2:00 AM | 10:00 PM−1 day |
| 3:00 AM | 11:00 PM−1 day |
| 4:00 AM | 12:00 AM |
| 5:00 AM | 1:00 AM |
| 6:00 AM | 2:00 AM |
| 7:00 AM | 3:00 AM |
| 8:00 AM | 4:00 AM |
| 9:00 AM | 5:00 AM |
| 10:00 AM | 6:00 AM |
| 11:00 AM | 7:00 AM |
| 12:00 PM | 8:00 AM |
| 1:00 PM | 9:00 AM |
| 2:00 PM | 10:00 AM |
| 3:00 PM | 11:00 AM |
| 4:00 PM | 12:00 PM |
| 5:00 PM | 1:00 PM |
| 6:00 PM | 2:00 PM |
| 7:00 PM | 3:00 PM |
| 8:00 PM | 4:00 PM |
| 9:00 PM | 5:00 PM |
| 10:00 PM | 6:00 PM |
| 11:00 PM | 7:00 PM |
Best time to call or meet
Both sides are at work from 1:00 PM – 6:00 PM in Porto (9:00 AM – 2:00 PM in Casa Nova).
Daylight saving time and the difference
The difference changes during the year because Porto and Casa Nova switch clocks on different dates:
- Oct 20, 2026 – Oct 25, 2026: -4h
- Oct 25, 2026 – Mar 28, 2027: -3h
- Mar 28, 2027 – Oct 20, 2027: -4h
Distance
Porto and Casa Nova are 6,501 km (4,040 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Porto and Casa Nova?
Casa Nova is 4 hours behind Porto.
What time is it in Casa Nova when it is 9 AM in Porto?
When it is 9:00 AM in Porto, it is 5:00 AM in Casa Nova.
When is the best time to call Casa Nova from Porto?
Both sides are at work from 1:00 PM – 6:00 PM in Porto (9:00 AM – 2:00 PM in Casa Nova).
Does the time difference between Porto and Casa Nova change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.