Shanghai, China Seoul, South Korea

Shanghai is in the CST timezone (UTC+8) and Seoul is in the KST timezone (UTC+9). The time difference between them is 1 hour.

Use the timeline above to find overlapping business hours between Shanghai and Seoul. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).

Neither Shanghai nor Seoul observes Daylight Saving Time, so the time difference remains constant throughout the year.

Click the pencil icon next to the Shanghai clock and type any time. The Seoul clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.