Lisbon to Tsukuba: time difference
Tsukuba is 8 h ahead of Lisbon. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Lisbon 15:03 3:03 PM Tsukuba 23:03 11:03 PM You –:–
15:03 3:03 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
23:03 11:03 PM
Japan Standard Time · UTC+9
☀️ 05:49 · 🌙 17:02
·
+8 h
Tsukuba is 8 h ahead of Lisbon.
When you, Lisbon and Tsukuba are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇹 Lisbon
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇯🇵 Tsukuba
8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇯🇵 Tsukuba |
|---|---|---|
| Local time | 15:03 | 23:03 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Western European Summer Time | Japan Standard Time |
| UTC offset | UTC+1 | UTC+9 |
| Offset from Lisbon | — | +8 h |
| IANA zone | Europe/Lisbon | Asia/Tokyo |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:49 | 05:49 |
| Sunset | 18:56 | 17:02 |
| Daylight | 11 h 7 min | 11 h 13 min |
| People on this clock | 545,923 | 230,398 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and Tsukuba: common questions
What is the time difference between Lisbon and Tsukuba?
Tsukuba is 8 hours ahead: it uses UTC+9, while Lisbon is on UTC+1.
If it is 9:00 AM in Lisbon, what time is it in Tsukuba?
At 9:00 AM in Lisbon, clocks in Tsukuba show 5:00 PM.
If it is 6:00 PM in Lisbon, what time is it in Tsukuba?
At 6:00 PM in Lisbon, clocks in Tsukuba show 2:00 AM (the next day).
When is a good time to call Tsukuba from Lisbon?
Between 9:00 AM and 10:00 AM in Lisbon – that is 5:00 PM to 6:00 PM in Tsukuba – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Tsukuba?
From 4:00 PM in Lisbon it is already the next day in Tsukuba. The other way round, until 8:00 AM in Tsukuba it is still the previous day in Lisbon.
Is the time difference between Lisbon and Tsukuba the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Tsukuba will be 9 hours ahead of Lisbon.
