Lisbon to Seongnam: time difference
Seongnam 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 19:55 7:55 PM Seongnam 03:55 3:55 AM You –:–
19:55 7:55 PM
Western European Summer Time · UTC+1
☀️ 07:48 · 🌙 18:57
03:55 3:55 AM
Korean Standard Time · UTC+9
☀️ 06:42 · 🌙 17:52
·
+8 h
Seongnam is 8 h ahead of Lisbon.
When you, Lisbon and Seongnam 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
🇰🇷 Seongnam
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 | 🇰🇷 Seongnam |
|---|---|---|
| Local time | 19:55 | 03:55 |
| Local date | Saturday, October 17, 2026 | Sunday, October 18, 2026 |
| Time zone | Western European Summer Time | Korean Standard Time |
| UTC offset | UTC+1 | UTC+9 |
| Offset from Lisbon | — | +8 h |
| IANA zone | Europe/Lisbon | Asia/Seoul |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:48 | 06:42 |
| Sunset | 18:57 | 17:52 |
| Daylight | 11 h 9 min | 11 h 10 min |
| People on this clock | 545,923 | 967,510 |
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 Seongnam: common questions
How many hours ahead of Lisbon is Seongnam?
The clocks in Seongnam are 8 hours ahead of those in Lisbon (UTC+9 and UTC+1).
What time is it in Seongnam when it is 9:00 AM in Lisbon?
When it is 9:00 AM in Lisbon, it is 5:00 PM in Seongnam.
What time is it in Seongnam at the end of the working day in Lisbon?
The working day in Lisbon ends at 6:00 PM; in Seongnam it is 2:00 AM (the next day) at that moment.
Is there a time when both Lisbon and Seongnam are at work?
Yes: from 9:00 AM to 10:00 AM in Lisbon (5:00 PM to 6:00 PM in Seongnam), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Seongnam?
From 4:00 PM in Lisbon it is already the next day in Seongnam. The other way round, until 8:00 AM in Seongnam it is still the previous day in Lisbon.
Does the time gap between Lisbon and Seongnam change during the year?
Yes – daylight saving time is used in Lisbon but not in Seongnam. From October 25, 2026, Seongnam will be 9 hours ahead of Lisbon.
