CST to Seoul Time Converter
KST is 15 hours ahead of CST. 9:00 AM CST = 12:00 AM KST (next day).
KST is 15 hours ahead of CST at the moment. To convert CST to Seoul Time, add 15 hours to the CST time: 9:00 AM CST = 12:00 AM KST (next day).
CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year. Seoul Time (Seoul time) is used in Seoul, South Korea.
CST here means North American Central Standard Time, not China Standard Time.
CST to Seoul Time time conversion table
CST to Seoul Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| CST | Seoul Time | Day |
|---|---|---|
| 12:00 AM CST | 3:00 PM KST | — |
| 1:00 AM CST | 4:00 PM KST | — |
| 2:00 AM CST | 5:00 PM KST | — |
| 3:00 AM CST | 6:00 PM KST | — |
| 4:00 AM CST | 7:00 PM KST | — |
| 5:00 AM CST | 8:00 PM KST | — |
| 6:00 AM CST | 9:00 PM KST | — |
| 7:00 AM CST | 10:00 PM KST | night |
| 8:00 AM CST | 11:00 PM KST | night |
| 9:00 AM CST | 12:00 AM KST | next day |
| 10:00 AM CST | 1:00 AM KST | next day |
| 11:00 AM CST | 2:00 AM KST | next day |
| 12:00 PM CST | 3:00 AM KST | next day |
| 1:00 PM CST | 4:00 AM KST | next day |
| 2:00 PM CST | 5:00 AM KST | next day |
| 3:00 PM CST | 6:00 AM KST | next day |
| 4:00 PM CST | 7:00 AM KST | next day |
| 5:00 PM CST | 8:00 AM KST | next day |
| 6:00 PM CST | 9:00 AM KST | next day |
| 7:00 PM CST | 10:00 AM KST | next day |
| 8:00 PM CST | 11:00 AM KST | next day |
| 9:00 PM CST | 12:00 PM KST | next day |
| 10:00 PM CST | 1:00 PM KST | next day |
| 11:00 PM CST | 2:00 PM KST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert CST to Seoul Time
Add 15 hours to the CST time to get Seoul Time.
Example: 9:00 AM CST = 12:00 AM KST (next day).
Across midnight: 10:00 PM CST = 1:00 PM KST (next day). The date changes, so always check the day as well as the hour.
Time difference between CST and Seoul Time
The time difference between CST and Seoul Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Seoul Time is 15 hours ahead of CST.
- 8 Mar 2026 – 31 Oct 2026: Seoul Time is 14 hours ahead of CST.
- 1 Nov 2026 – 30 Dec 2026: Seoul Time is 15 hours ahead of CST.
CST and Seoul Time during daylight saving time
- CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).
- Seoul Time does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between CST and Seoul Time
CST and Seoul Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM CST, which is 10:00 PM KST.
CST to Seoul Time FAQ
What is the time difference between CST and Seoul Time?
Right now KST is 15 hours ahead of CST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM CST in Seoul Time?
9:00 AM CST is 12:00 AM KST (next day).
What is 12 PM (noon) CST in Seoul Time?
12:00 PM CST is 3:00 AM KST (next day).
Is Seoul Time ahead of or behind CST?
KST is 15 hours ahead of CST, so it is later in Seoul Time than in CST.
Does CST change for daylight saving time?
Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.
Does Seoul Time change for daylight saving time?
No. Seoul Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between CST and Seoul Time?
CST and Seoul Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM CST, which is 10:00 PM KST.
Is CT the same as CST?
CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Seoul Time to CST
Convert CST to other time zones
Convert other time zones to Seoul Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.