Offset
The time difference between Hangzhou and Seoul is 1 hour.
Hangzhou (CST) is behind Seoul (KST).
CST: UTC+8
KST: UTC+9
Neither Hangzhou nor Seoul is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–4 PM in Hangzhou (10 AM–5 PM in Seoul).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Hangzhou (1:00 PM Seoul).
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
China
- New Year's DayThu, Jan 1
- Chinese New Year (Spring Festival)Tue, Feb 17
- Labour DayFri, May 1
- Dragon Boat FestivalFri, Jun 19
- Mid-Autumn FestivalFri, Sep 25
- National DayThu, Oct 1
South Korea
- New Year's DayThu, Jan 1
- Lunar New YearMon, Feb 16
- Lunar New YearTue, Feb 17
- Lunar New YearWed, Feb 18
- Independence Movement DayMon, Mar 2
- Labour DayFri, May 1
- Children's DayTue, May 5
- Buddha's BirthdayMon, May 25
- Local Election DayWed, Jun 3
- Memorial DaySat, Jun 6
- Constitution DayFri, Jul 17
- Liberation DayMon, Aug 17
- ChuseokThu, Sep 24
- ChuseokFri, Sep 25
- ChuseokSat, Sep 26
- National Foundation DayMon, Oct 5
- Hangul DayFri, Oct 9
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Hangzhou | Seoul | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Neither Hangzhou nor Seoul observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:58 AM
- Sunset
- 7:00 PM
- Day length
- 14h 2m
- Sunrise
- 5:12 AM
- Sunset
- 7:52 PM
- Day length
- 14h 41m
Daylight overlap: 13h 54m — 4:58 AM–6:52 PM in Hangzhou (5:58 AM–7:52 PM in Seoul). Both locations are in daylight during this window.
Cities in these zones
Other cities in China Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in China Standard Time
- PVG
- SHA
- PEK
- PKX
- SZX
- CAN
- FUO
- CTU
- TFU
- TSN
Airports in Korea Standard Time
- GMP
- ICN
- PUS
- TAE
- CJJ
- KWJ
- MWX
Related conversions
Common conversions
- What is 9:00 am Hangzhou in Seoul?
- 9:00 am Hangzhou is 10:00 am Seoul.
- What is 12:00 pm Hangzhou in Seoul?
- 12:00 pm Hangzhou is 1:00 pm Seoul.
- What is 12:30 pm Hangzhou in Seoul?
- 12:30 pm Hangzhou is 1:30 pm Seoul.
- What is 2:00 pm Hangzhou in Seoul?
- 2:00 pm Hangzhou is 3:00 pm Seoul.
- What is 5:00 pm Hangzhou in Seoul?
- 5:00 pm Hangzhou is 6:00 pm Seoul.
- What is 11:30 pm Hangzhou in Seoul?
- 11:30 pm Hangzhou is 12:30 am Seoul, the next day.