Kosai to Porto time converter
Porto is 8 hours behind Kosai. When it is 9:00 AM in Kosai, it is 1:00 AM in Porto.
4:32 AM in Kosai, Tuesday, October 20, 2026
Kosai to Porto conversion table
Every hour of today in Kosai and the matching time in Porto. Light rows are typical working hours (9:00–18:00).
| Kosai | 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 Kosai (9:00 AM – 10:00 AM in Porto).
Daylight saving time and the difference
The difference changes during the year because Kosai 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
Kosai and Porto are 10,899 km (6,772 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Kosai and Porto?
Porto is 8 hours behind Kosai.
What time is it in Porto when it is 9 AM in Kosai?
When it is 9:00 AM in Kosai, it is 1:00 AM in Porto.
When is the best time to call Porto from Kosai?
Both sides are at work from 5:00 PM – 6:00 PM in Kosai (9:00 AM – 10:00 AM in Porto).
Does the time difference between Kosai 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.