China to South Korea
+1hChina
CSTSOURCESouth Korea
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and KST on the World Map
The map below highlights the CST (China Standard Time) and KST (Korea Standard Time) timezone regions across the globe.
CST – China Standard Time
UTC+08:00China Standard Time (CST) covers all of mainland China, 8 hours ahead of UTC.
- •China uses a single time zone despite spanning 5 geographical zones.
- •In Xinjiang (western China), sunset can be as late as midnight in summer.
- •China abolished daylight saving time in 1991.
- •The Shanghai Stock Exchange operates on CST/Beijing Time.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
Comparing Time Zones: China and South Korea
China runs on China Standard Time (CST) at UTC+08:00. South Korea runs on Korean Standard Time (KST) at UTC+09:00. That puts China 1 hour ahead of South Korea — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in China it is 10:00 AM in South Korea. Midnight in China is 1:00 AM in South Korea. Neither zone observes daylight saving time, so the offset between them stays constant all year.
China to South Korea time conversion table
| China (CST) | South Korea (KST) | Day |
|---|---|---|
| 12:00 AM | 1:00 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 |
| 12:00 PM | 1:00 PM | same day |
| 3:00 PM | 4:00 PM | same day |
| 5:00 PM | 6:00 PM | same day |
| 6:00 PM | 7:00 PM | same day |
| 9:00 PM | 10:00 PM | same day |
Why people convert China to South Korea time
- Scheduling a call from China to South Korea: a 10:00 AM start in China lands at 11:00 AM in South Korea, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both China and South Korea are inside the 9-to-5 working day between 9:00 AM and 4:00 PM CST time (10:00 AM–5:00 PM KST). That is roughly 7 hours of usable overlap.
- Coordinating a China-based team with South Korea contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM CST as the recurring meeting window if you work primarily from China and need South Korea colleagues present.
About CST (China Standard Time)
China Standard Time (CST, also known as Beijing Time) is used across all of mainland China despite the country spanning five geographical time zones. This single-timezone policy was adopted in 1949. China does not observe daylight saving time. CST is shared with Hong Kong (HKT), Macau, Taiwan, Singapore, Malaysia, and the Philippines, making UTC+08:00 one of the most used offsets in the world.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
Best time to call between China and South Korea
Both China and South Korea sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM CST, which is 10:00 AM–5:00 PM KST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
China and South Korea share 7 hours of working-hours overlap (9:00 AM–4:00 PM CST), so scheduling a live meeting is straightforward.
China is 1 hour ahead of South Korea (CST UTC+08:00 → KST UTC+09:00). The shared working window is 9:00 AM–4:00 PM CST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between China and South Korea?
China (CST, UTC+08:00) is 1 hour ahead of South Korea (KST, UTC+09:00). The gap is currently +1h.
How do I convert China time to South Korea time?
Add +1h to China local time. For example, 9:00 AM in China is 10:00 AM in South Korea.
What time is it in South Korea right now?
South Korea uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from China.
What is the best time to call South Korea from China?
Call between 9:00 AM and 4:00 PM CST — that maps to 10:00 AM–5:00 PM KST and keeps both parties inside the working day.
Which is ahead, China or South Korea?
China is 1 hour ahead of South Korea. When it is 12:00 PM in China it is 1:00 PM in South Korea.
Do China and South Korea use different time zones?
China (China) uses CST at UTC+08:00, while South Korea (South Korea) uses KST at UTC+09:00. The IANA identifiers are Asia/Shanghai and Asia/Seoul.
Does daylight saving time affect the China–South Korea difference?
Neither zone observes daylight saving time, so the +1h offset between China and South Korea is fixed all year.
Which other cities share China's time zone?
CST also covers Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hong Kong, Taipei, Wuhan and 2 more.
Which countries use CST, China's zone?
CST is used in China, Hong Kong, Macau, Taiwan.
Is there a day difference between China and South Korea?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between China and South Korea?
South Korea is +1h from China.
What timezone is China in?
China operates on its local timezone.
What timezone is South Korea in?
South Korea operates on its local timezone.
Which countries use CST (China Standard Time)?
CST is used in China, Hong Kong, Macau, Taiwan.
Does CST observe daylight saving time?
No, CST does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about CST?
China uses a single time zone despite spanning 5 geographical zones. In Xinjiang (western China), sunset can be as late as midnight in summer.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in China, what time is it in South Korea?
When it is 12:00 AM (midnight) in China (CST), it is +1h later in South Korea (KST).
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