Nagano to Porto time converter
Porto is 8 hours behind Nagano. When it is 9:00 AM in Nagano, it is 1:00 AM in Porto.
11:33 PM in Nagano, Tuesday, October 20, 2026
Nagano to Porto conversion table
Every hour of today in Nagano and the matching time in Porto. Light rows are typical working hours (9:00–18:00).
| Nagano | Porto |
|---|---|
| 12:00 AM | 4:00 PM−1 day |
| 1:00 AM | 5:00 PM−1 day |
| 2:00 AM | 6:00 PM−1 day |
| 3:00 AM | 7:00 PM−1 day |
| 4:00 AM | 8:00 PM−1 day |
| 5:00 AM | 9:00 PM−1 day |
| 6:00 AM | 10:00 PM−1 day |
| 7:00 AM | 11:00 PM−1 day |
| 8:00 AM | 12:00 AM |
| 9:00 AM | 1:00 AM |
| 10:00 AM | 2:00 AM |
| 11:00 AM | 3:00 AM |
| 12:00 PM | 4:00 AM |
| 1:00 PM | 5:00 AM |
| 2:00 PM | 6:00 AM |
| 3:00 PM | 7:00 AM |
| 4:00 PM | 8:00 AM |
| 5:00 PM | 9:00 AM |
| 6:00 PM | 10:00 AM |
| 7:00 PM | 11:00 AM |
| 8:00 PM | 12:00 PM |
| 9:00 PM | 1:00 PM |
| 10:00 PM | 2:00 PM |
| 11:00 PM | 3:00 PM |
Best time to call or meet
Both sides are at work from 5:00 PM – 6:00 PM in Nagano (9:00 AM – 10:00 AM in Porto).
Daylight saving time and the difference
The difference changes during the year because Nagano and Porto switch clocks on different dates:
- Oct 20, 2026 – Oct 25, 2026: -8h
- Oct 25, 2026 – Mar 28, 2027: -9h
- Mar 28, 2027 – Oct 20, 2027: -8h
Distance
Nagano and Porto are 10,727 km (6,665 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Nagano and Porto?
Porto is 8 hours behind Nagano.
What time is it in Porto when it is 9 AM in Nagano?
When it is 9:00 AM in Nagano, it is 1:00 AM in Porto.
When is the best time to call Porto from Nagano?
Both sides are at work from 5:00 PM – 6:00 PM in Nagano (9:00 AM – 10:00 AM in Porto).
Does the time difference between Nagano 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.