South Korea to China
-1hSouth Korea
KSTSOURCEChina
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and CST on the World Map
The map below highlights the KST (Korea Standard Time) and CST (China Standard Time) timezone regions across the globe.
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).
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.
South Korea to China Time Difference – Complete Guide
South Korea runs on Korean Standard Time (KST) at UTC+09:00. China runs on China Standard Time (CST) at UTC+08:00. That puts South Korea 1 hour behind China — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in South Korea it is 8:00 AM in China. Midnight in South Korea is 11:00 PM in China. Neither zone observes daylight saving time, so the offset between them stays constant all year.
South Korea to China time conversion table
| South Korea (KST) | China (CST) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert South Korea to China time
- Scheduling a call from South Korea to China: a 10:00 AM start in South Korea lands at 9:00 AM in China, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both South Korea and China are inside the 9-to-5 working day between 10:00 AM and 5:00 PM KST time (9:00 AM–4:00 PM CST). That is roughly 7 hours of usable overlap.
- Booking travel or deliveries: tracking China local time against South Korea keeps pickup windows and arrival estimates honest across the -1h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from South Korea and need China colleagues present.
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.
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.
Best time to call between South Korea and China
Both South Korea and China sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM KST, which is 9:00 AM–4:00 PM CST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
South Korea and China share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
South Korea is 1 hour behind China (KST UTC+09:00 → CST UTC+08:00). The shared working window is 10:00 AM–5:00 PM KST. 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 South Korea and China?
South Korea (KST, UTC+09:00) is 1 hour behind China (CST, UTC+08:00). The gap is currently -1h.
How do I convert South Korea time to China time?
Add -1h to South Korea local time. For example, 9:00 AM in South Korea is 8:00 AM in China.
What time is it in China right now?
China uses CST at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from South Korea.
What is the best time to call China from South Korea?
Call between 10:00 AM and 5:00 PM KST — that maps to 9:00 AM–4:00 PM CST and keeps both parties inside the working day.
Which is behind, South Korea or China?
South Korea is 1 hour behind China. When it is 12:00 PM in South Korea it is 11:00 AM in China.
Do South Korea and China use different time zones?
South Korea (South Korea) uses KST at UTC+09:00, while China (China) uses CST at UTC+08:00. The IANA identifiers are Asia/Seoul and Asia/Shanghai.
Does daylight saving time affect the South Korea–China difference?
Neither zone observes daylight saving time, so the -1h offset between South Korea and China is fixed all year.
Which other cities share South Korea's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, South Korea's zone?
KST is used in South Korea, North Korea.
Is there a day difference between South Korea and China?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between South Korea and China?
China is -1h from South Korea.
What timezone is South Korea in?
South Korea operates on its local timezone.
What timezone is China in?
China operates on its local timezone.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the CST timezone?
Major cities in the CST timezone include Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hong Kong, Taipei, Wuhan.
What is the UTC offset for CST?
China Standard Time (CST) is at UTC+08:00.
What should I know about the CST timezone?
China uses a single time zone despite spanning 5 geographical zones. In Xinjiang (western China), sunset can be as late as midnight in summer.
When is it midnight in South Korea, what time is it in China?
When it is 12:00 AM (midnight) in South Korea (KST), it is -1h later in China (CST).
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