Lanzhou to Seoul: time difference
Seoul is 1 h ahead of Lanzhou. 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.
Lanzhou 13:22 1:22 PM Seoul 14:22 2:22 PM You –:–
13:22 1:22 PM
China Standard Time · UTC+8
☀️ 07:16 · 🌙 18:24
14:22 2:22 PM
Korean Standard Time · UTC+9
☀️ 06:45 · 🌙 17:50
·
+1 h
Seoul is 1 h ahead of Lanzhou.
When you, Lanzhou and Seoul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇳 Lanzhou
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
🇰🇷 Seoul
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇳 Lanzhou | 🇰🇷 Seoul |
|---|---|---|
| Local time | 13:22 | 14:22 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Lanzhou | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:16 | 06:45 |
| Sunset | 18:24 | 17:50 |
| Daylight | 11 h 8 min | 11 h 5 min |
| People on this clock | 3,688,400 | 9,509,458 |
Compare Lanzhou with another city
More comparisons with Lanzhou: the time zones next to it and the far side of the clock.
Big time differences
Lanzhou and Seoul: common questions
How far ahead of Lanzhou is Seoul?
Seoul is 1 hour ahead of Lanzhou: UTC+9 against UTC+8.
What time is it in Seoul when it is 9:00 AM in Lanzhou?
When it is 9:00 AM in Lanzhou, it is 10:00 AM in Seoul.
If it is 6:00 PM in Lanzhou, what time is it in Seoul?
At 6:00 PM in Lanzhou, clocks in Seoul show 7:00 PM.
When is a good time to call Seoul from Lanzhou?
Between 9:00 AM and 5:00 PM in Lanzhou – that is 10:00 AM to 6:00 PM in Seoul – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Seoul?
From 11:00 PM in Lanzhou it is already the next day in Seoul. The other way round, until 1:00 AM in Seoul it is still the previous day in Lanzhou.
Does the time difference between Lanzhou and Seoul change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
