Time Difference Between Japan and Portugal
As of 31 August 2026, Portugal is 8 hours behind Japan. That number is not constant. Over the course of a year, because of daylight saving changes, Lisbon, Portugal ranges from 9 hours behind to 8 hours behind relative to Tokyo, Japan. The calculator below is always up to date.
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Tokyo, Japan
07:34
Tue, Sep 1, 2026
UTC+9 · Asia/Tokyo
Lisbon, Portugal
-8h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/Lisbon
Portugal is 8 hours behind Japan.
When it is 07:34 in Japan, it is already the previous day in Portugal.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Japan | Tuesday, September 1, 2026 | Asia/Tokyo | UTC+9 | Not observed |
| Portugal | Monday, August 31, 2026 | Europe/Lisbon | UTC+1 | Active now |
Portugal: Mainland Portugal and Madeira share one zone. The Azores are 1 hour behind.
Hour by hour: Japan to Portugal
Every hour of today in Japan and what it is in Portugal. Highlighted rows fall inside Portugal working hours (09:00–18:00).
| Japan | Portugal |
|---|---|
| 00:00 | 16:00prev day |
| 01:00 | 17:00prev day |
| 02:00 | 18:00prev day |
| 03:00 | 19:00prev day |
| 04:00 | 20:00prev day |
| 05:00 | 21:00prev day |
| 06:00 | 22:00prev day |
| 07:00 | 23:00prev day |
| 08:00 | 00:00 |
| 09:00 | 01:00 |
| 10:00 | 02:00 |
| 11:00 | 03:00 |
| Japan | Portugal |
|---|---|
| 12:00 | 04:00 |
| 13:00 | 05:00 |
| 14:00 | 06:00 |
| 15:00 | 07:00 |
| 16:00 | 08:00 |
| 17:00 | 09:00 |
| 18:00 | 10:00 |
| 19:00 | 11:00 |
| 20:00 | 12:00 |
| 21:00 | 13:00 |
| 22:00 | 14:00 |
| 23:00 | 15:00 |
Best time to call or meet
Overlapping working hours
17:00–18:00 in Japan (09:00–10:00 in Portugal)
Both places are inside 09:00–18:00 for 1 hour a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
16:00–21:00 in Japan (08:00–13:00 in Portugal)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
Portugal puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, Portugal is 9 hours behind Japan — instead of 8 hours behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Japan and Portugal: common questions
What is the time difference between Japan and Portugal?
As of 31 August 2026, Portugal is 8 hours behind Japan. The gap is not fixed: across the year, Portugal ranges from 9 hours behind to 8 hours behind relative to Japan, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Japan, what time is it in Portugal?
It is 01:00 AM in Lisbon, Portugal. Use the time field in the calculator above to check any other hour.
Is Portugal ahead of or behind Japan?
Portugal is behind Japan by 8 hours at the moment. In practical terms, the working day in Portugal starts and ends later in Japan terms.
Do Japan and Portugal observe daylight saving time?
Portugal changes its clocks twice a year; Japan does not. The difference therefore shifts by an hour when Portugal switches: across the year, Portugal ranges from 9 hours behind to 8 hours behind relative to Japan.
What is the best time to call Portugal from Japan?
Working hours overlap between 17:00 and 18:00 Japan time, which is 09:00 to 10:00 in Portugal. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Tokyo, Japan (UTC+9) and Lisbon, Portugal (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.