Chicago: Central Standard Time
Chicago, Illinois uses the America/Chicago time zone (CST).
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5).
Chicago to Seoul time
15 hours ahead of Chicago
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Chicago to Seoul conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
| Chicago | Seoul |
|---|---|
| 12:00 AM | 3:00 PM |
| 1:00 AM | 4:00 PM |
| 2:00 AM | 5:00 PM |
| 3:00 AM | 6:00 PM |
| 4:00 AM | 7:00 PM |
| 5:00 AM | 8:00 PM |
| 6:00 AM | 9:00 PM |
| 7:00 AM | 10:00 PM |
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM (next day) |
| 10:00 AM | 1:00 AM (next day) |
| 11:00 AM | 2:00 AM (next day) |
| 12:00 PM | 3:00 AM (next day) |
| 1:00 PM | 4:00 AM (next day) |
| 2:00 PM | 5:00 AM (next day) |
| 3:00 PM | 6:00 AM (next day) |
| 4:00 PM | 7:00 AM (next day) |
| 5:00 PM | 8:00 AM (next day) |
| 6:00 PM | 9:00 AM (next day) |
| 7:00 PM | 10:00 AM (next day) |
| 8:00 PM | 11:00 AM (next day) |
| 9:00 PM | 12:00 PM (next day) |
| 10:00 PM | 1:00 PM (next day) |
| 11:00 PM | 2:00 PM (next day) |
About these time zones
Seoul: Korean Standard Time
Seoul, South Korea uses the Asia/Seoul time zone (KST).
No clock change is scheduled; the offset stays the same all year.
Questions about Chicago and Seoul time
What is the time difference between Chicago and Seoul?
The current difference is shown at the top of this page. Chicago uses Central Standard Time (CST, UTC−6) as standard time and Central Daylight Time (CDT, UTC−5) during daylight saving time; Seoul uses Korean Standard Time (KST, UTC+9) all year. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.
When it is 9:00 AM in Chicago, what time is it in Seoul?
On Tuesday, November 3, 2026, 9:00 AM in Chicago was 12:00 AM (next day) in Seoul. The conversion table above shows today’s values.
Do the clocks change in Chicago or Seoul?
Chicago: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5). Seoul does not change its clocks.
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