When the world meets at work.
Read the day in both zones.
If it's this in Porto, it's that in Osaka.
When it's 8:00 am in Porto, it's 5:00 pm in Osaka — afternoon there, the same day.
When it's 10:00 am in Porto, it's 7:00 pm in Osaka — evening there, the same day.
When it's 12:00 pm in Porto, it's 9:00 pm in Osaka — night there, the same day.
When it's 3:00 pm in Porto, it's 12:00 am in Osaka — late night there, the next day.
When it's 5:00 pm in Porto, it's 2:00 am in Osaka — late night there, the next day.
When it's 9:00 pm in Porto, it's 6:00 am in Osaka — morning there, the next day.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Porto uses the EUR (€) and Osaka uses the JPY (¥). Language shifts too — Portuguese in Porto, Japanese in Osaka. Be careful behind the wheel: Porto drives on the right, Osaka on the left.
- Country
- Portugal
- Capital
- Lisbon
- Currency
- euro (EUR · €)
- Language
- Portuguese
- Calling code
- +351
- Drives on
- Right
- Country
- Japan
- Capital
- Tokyo
- Currency
- Japanese yen (JPY · ¥)
- Language
- Japanese
- Calling code
- +81
- Drives on
- Left
Quick answers. Before you book the call.
What's the time difference between Porto and Osaka?
Porto is 9 hours ahead of Osaka. Porto runs on GMT+0 and Osaka on GMT+9. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When it's 10 am in Porto, what time is it in Osaka?
10:00 am in Porto is 7:00 pm in Osaka on the same day — evening there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When it's 3 pm in Porto, what time is it in Osaka?
3:00 pm in Porto is 12:00 am in Osaka the next day — late night there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When's the best time to schedule a meeting?
Standard 09:00–17:00 workdays don't intersect. Most teams compromise with one side meeting early (before 09:00) or late (after 17:00).
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is Porto from Osaka?
About 10,819 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 13h 14m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do Porto and Osaka use?
Porto uses the euro (EUR, €); Osaka uses the Japanese yen (JPY, ¥). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call Porto from Osaka?
Dial the international prefix used by your carrier (often 00), then +351, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in Porto and Osaka?
Porto primarily speaks Portuguese; Osaka speaks Japanese. English is widely used in business contexts in major cities of both, but written contracts may need translation.
Do Porto and Osaka drive on the same side of the road?
No. Portugal drives on the right, Japan on the left. If you're renting, expect a learning curve on the first day — especially at roundabouts and when judging the centre of the lane.