No overlap — one side will join outside working hours
CDT (Chicago)
KST (Seoul)
00:00
14:00Working
01:00
15:00Working
02:00
16:00Working
03:00
17:00
04:00
18:00
05:00
19:00
06:00
20:00
07:00
21:00
08:00
22:00
09:00Working
23:00off
10:00Working
00:00+1doff
11:00Working
01:00+1doff
12:00Working
02:00+1doff
13:00Working
03:00+1doff
14:00Working
04:00+1doff
15:00Working
05:00+1doff
16:00Working
06:00+1doff
17:00
07:00+1d
18:00
08:00+1d
19:00
09:00+1dWorking
20:00
10:00+1dWorking
21:00
11:00+1dWorking
22:00
12:00+1dWorking
23:00
13:00+1dWorking
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between cdt and kst?
Central Daylight Time (cdt) is UTC-5 and Korea Standard Time (kst) is UTC+9. The difference between them is 14 hours.
Where is cdt used?
Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.
Where is kst used?
Korea Standard Time (kst) is used in South Korea and surrounding regions. The IANA timezone identifier is Asia/Seoul.
How do I convert cdt to kst?
Use the interactive converter above. Drag the time slider to any cdt time and the kst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
CDT (Chicago) is 14 hours behind KST (Seoul). When it's noon in CDT (Chicago), it's 02:00 in KST (Seoul).
CDT (Chicago) observes America/Chicago and KST (Seoul) observes Asia/Seoul — a 14 hours gap between them.
Daily overlap window
When CDT (Chicago) is in standard working hours, KST (Seoul) is not — and vice versa. There is no mutual business window between these two locations.
Meeting time recommendations
No business hours overlap exists between CDT (Chicago) and KST (Seoul). Showing the most balanced options with minimal inconvenience for both locations.
16:00 Chicago / 06:00 Seoul⚡ One side off-hours
⚠️ 3h before working hours in Seoul
19:00 Chicago / 09:00 Seoul⚡ One side off-hours
⚠️ 3h after working hours in Chicago
15:00 Chicago / 05:00 Seoul⚡ One side off-hours
⚠️ 4h before working hours in Seoul
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Public holidays this year
⚡ Upcoming holidays in both locations, confirm with your contact before booking.
CDT (Chicago)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
KST (Seoul)7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
CDT (Chicago) and KST (Seoul) — practical scheduling
Coordinating between CDT (Chicago) (USA) and KST (Seoul) (South Korea) means working around a 14-hour time difference. Since standard business hours don't naturally overlap, meetings usually require one side to shift slightly outside their normal working day.
💡 Practical scheduling guidelines
⚡
16:00–17:00 in CDT (Chicago) corresponds to 06:00–07:00 in KST (Seoul) (3h before working hours in Seoul).
⚡
19:00–20:00 in CDT (Chicago) corresponds to 09:00–10:00 in KST (Seoul) (3h after working hours in Chicago).
⚡
15:00–16:00 in CDT (Chicago) corresponds to 05:00–06:00 in KST (Seoul) (4h before working hours in Seoul).
With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any CDT (Chicago) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
