Seoul to Lanzhou: time difference
Lanzhou is 1 h behind Seoul. 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.
Seoul 15:22 3:22 PM Lanzhou 14:22 2:22 PM You –:–
15:22 3:22 PM
Korean Standard Time · UTC+9
☀️ 06:45 · 🌙 17:50
14:22 2:22 PM
China Standard Time · UTC+8
☀️ 07:16 · 🌙 18:24
·
−1 h
Lanzhou is 1 h behind Seoul.
When you, Seoul and Lanzhou are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇷 Seoul
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
🇨🇳 Lanzhou
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇰🇷 Seoul | 🇨🇳 Lanzhou |
|---|---|---|
| Local time | 15:22 | 14:22 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Korean Standard Time | China Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seoul | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Shanghai |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:45 | 07:16 |
| Sunset | 17:50 | 18:24 |
| Daylight | 11 h 5 min | 11 h 8 min |
| People on this clock | 9,509,458 | 3,688,400 |
Compare Seoul with another city
More comparisons with Seoul: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seoul and Lanzhou: common questions
What is the time difference between Seoul and Lanzhou?
Lanzhou is 1 hour behind: it uses UTC+8, while Seoul is on UTC+9.
What time is it in Lanzhou when it is 9:00 AM in Seoul?
When it is 9:00 AM in Seoul, it is 8:00 AM in Lanzhou.
What time is it in Lanzhou at the end of the working day in Seoul?
The working day in Seoul ends at 6:00 PM; in Lanzhou it is 5:00 PM at that moment.
When is a good time to call Lanzhou from Seoul?
Between 10:00 AM and 6:00 PM in Seoul – that is 9:00 AM to 5:00 PM in Lanzhou – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Seoul is it still yesterday in Lanzhou?
Before 1:00 AM in Seoul, the date in Lanzhou has not changed yet. From 11:00 PM in Lanzhou, it is already the next day in Seoul.
Does the time gap between Seoul and Lanzhou change during the year?
No, the clocks change neither in Seoul nor in Lanzhou, so the gap is 1 hour all year round.
