Time difference between Shanghai and Seoul
Seoul is 1 hour ahead of Shanghai. When it's 9:00 in Shanghai, it's 10:00 in Seoul.
Seoul is 1 hour ahead of Shanghai.
On Friday, 2 October 2026, 09:00 in Shanghai is 10:00 in Seoul. Shanghai is UTC+8; Seoul is UTC+9.
The gap through 2026
It stays 1 hour all year — neither city changes its clocks against the other.
Shanghai to Seoul, hour by hour
On Friday 2 October.
| Shanghai | Seoul |
|---|---|
| 07:00 Early morning | 08:00 Early morning |
| 08:00 Early morning | 09:00 Working hours |
| 09:00 Working hours | 10:00 Working hours |
| 10:00 Working hours | 11:00 Working hours |
| 11:00 Working hours | 12:00 Working hours |
| 12:00 Working hours | 13:00 Working hours |
| 13:00 Working hours | 14:00 Working hours |
| 14:00 Working hours | 15:00 Working hours |
| 15:00 Working hours | 16:00 Working hours |
| 16:00 Working hours | 17:00 Evening |
| 17:00 Evening | 18:00 Evening |
| 18:00 Evening | 19:00 Evening |
| 19:00 Evening | 20:00 Evening |
| 20:00 Evening | 21:00 Evening |
| 21:00 Evening | 22:00 Sleeping hours |
| 22:00 Sleeping hours | 23:00 Sleeping hours |
Daylight saving in 2026
Neither Shanghai nor Seoul changes its clocks, so the difference is the same all year.
Best times for a call
Working hours (09:00–17:00) overlap for 7 hours: 09:00–16:00 in Shanghai, which is 10:00–17:00 in Seoul.
- Shanghai 09:00Working hoursSeoul 10:00Working hours
- Shanghai 10:00Working hoursSeoul 11:00Working hours
- Shanghai 11:00Working hoursSeoul 12:00Working hours
More time differences for Shanghai and Seoul
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- Los Angeles and Seoul
- Chicago and Seoul
- London and Seoul
- Paris and Seoul
- Berlin and Seoul
- New York and Shanghai
- Los Angeles and Shanghai
- Chicago and Shanghai
- London and Shanghai
- Paris and Shanghai
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- Denver and Shanghai
- Denver and Seoul
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- Toronto and Seoul
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- Mexico City and Shanghai
- Mexico City and Seoul
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- Buenos Aires and Shanghai
- Buenos Aires and Seoul
- Bogotá and Shanghai
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- Dublin and Shanghai
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- Lisbon and Shanghai
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- Madrid and Shanghai
- Madrid and Seoul
How the time difference calculator works
The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.
Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.
Examples
- London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
- Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.
Good for
- Knowing when a colleague's day starts
- Setting expectations for replies across time zones
- Planning travel and jet lag
Frequently asked questions
- What time is it in Seoul when it's 9 AM in Shanghai?
- 10:00 AM — as of 2 October 2026. Seoul is 1 hour ahead of Shanghai.
- Does the time difference between Shanghai and Seoul change?
- No. It's 1 hour all through 2026: neither city changes its clocks.
- What's the best time for a call between Shanghai and Seoul?
- Between 09:00 and 16:00 Shanghai time, when both cities are in working hours (09:00–17:00).
- What time zones are Shanghai and Seoul in?
- Shanghai uses Asia/Shanghai (UTC+8 today); Seoul uses Asia/Seoul (UTC+9 today).
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