9am in Shanghai is 10am in Seoul
MEETING PLANNER
hover a column · click to lockSeoul is 1 hour ahead of Shanghai. Seoul runs on Asia/Seoul (UTC+9); Shanghai runs on Asia/Shanghai (UTC+8). The difference is measured right now.
Standard 9-to-5 business hours in Seoul and Shanghai overlap for roughly 7 hours a day. That window lands at 10:00–17:00 in Seoul and 09:00–16:00 in Shanghai. Teams with real-time coordination needs anchor cross-city calls inside it: long enough to cover handovers, short enough that it forces crisp agendas. Outside that window, async is the default — shared docs, recorded updates, and scheduled follow-ups rather than live meetings.
- What is the time difference between Seoul and Shanghai?
- Seoul is currently 1 hour ahead of Shanghai. Seoul is on Asia/Seoul (UTC+9); Shanghai is on Asia/Shanghai (UTC+8).
- Do Seoul and Shanghai observe daylight saving time?
- Neither Seoul nor Shanghai observes daylight saving time. The offset between them is the same all year.
- When do business hours overlap between Seoul and Shanghai?
- Standard 9-to-5 business hours overlap for about 7 hours per day — roughly 10:00–17:00 in Seoul and 09:00–16:00 in Shanghai. Cross-city calls typically land inside that window.
Frequently Asked Questions
What is the time difference between Seoul and Shanghai?
Seoul is currently 1 hour ahead of Shanghai. Seoul is on Asia/Seoul (UTC+9); Shanghai is on Asia/Shanghai (UTC+8).
Do Seoul and Shanghai observe daylight saving time?
Neither Seoul nor Shanghai observes daylight saving time. The offset between them is the same all year.
When do business hours overlap between Seoul and Shanghai?
Standard 9-to-5 business hours overlap for about 7 hours per day — roughly 10:00–17:00 in Seoul and 09:00–16:00 in Shanghai. Cross-city calls typically land inside that window.