Does Chicago observe daylight saving time?

Yes. Chicago is on CDT (UTC-5) now, and its clocks go back 1 hour on Sun, Nov 1, to CST (UTC-6).

Does Seoul observe daylight saving time?

No. Seoul stays on KST (UTC+9) all year, so its clocks don't change.

What time is it in Seoul when it's 9 AM in Chicago?

11:00 PM in Seoul, on the same day.

Chicago to Seoul Meeting Planner

Seoul is 14 hours ahead of Chicago right now. Their working days don't overlap today.

Chicago · United States

10:38 PM

Fri, Oct 16 · CDT · summer time

Seoul · South Korea

12:38 PM

Sat, Oct 17 · KST

Best Meeting Times Between Chicago and Seoul

No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 7:00 PM in Chicago, which is 9:00 AM in Seoul; consider splitting into two shorter meetings or shifting someone's hours.

Who's meeting

2 of 4 places

ChicagoOrganizerUnited States ·· summer time10:38PMnow
SeoulSouth Korea ·12:38PMTomorrow · now

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Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Chicago

Working hours, everywhere

Best times to meet

Friday, October 16, 2026, in Chicago time.

7:00PMBest · GoodWorking hours in Seoul (09:00, next day); just outside working hours in Chicago (19:00).
8:00PMOption 2 · PossibleWorking hours in Seoul (10:00, next day); late evening in Chicago (20:00).
9:00PMOption 3 · PossibleWorking hours in Seoul (11:00, next day); late evening in Chicago (21:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a one-hour slot of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
ChicagoCDT
SeoulUTC+9
UTC	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Chicago7:00 PM CDTFri, Oct 16
Seoul9:00 AM UTC+9Sat, Oct 17
UTC2026-10-17 00:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Chicago and Seoul

Seoul is 14 hours ahead of Chicago right now: Seoul is on KST (UTC+9) and Chicago on CDT (UTC-5). That changes on Sun, Nov 1, when clocks go back in Chicago: then Seoul is 15 hours ahead of Chicago.

Time difference between Chicago and Seoul over the next 12 months
From	Difference	Why
Now	Seoul 14 hours ahead	—
Sun, Nov 1	Seoul 15 hours ahead	Clocks go back in Chicago
Sun, Mar 14, 2027	Seoul 14 hours ahead	Clocks go forward in Chicago

Chicago is on Central Standard Time. Seoul is on Korean Standard Time.

Frequently Asked Questions: Chicago & Seoul Scheduling

What is the time difference between Chicago and Seoul?: Seoul is 14 hours ahead of Chicago right now: Seoul is on KST (UTC+9) and Chicago on CDT (UTC-5). That changes on Sun, Nov 1, when clocks go back in Chicago: then Seoul is 15 hours ahead of Chicago.
What is the best time to schedule a meeting between Chicago and Seoul?: No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 7:00 PM in Chicago, which is 9:00 AM in Seoul; consider splitting into two shorter meetings or shifting someone's hours.
Does Chicago observe daylight saving time?: Yes. Chicago is on CDT (UTC-5) now, and its clocks go back 1 hour on Sun, Nov 1, to CST (UTC-6).
Does Seoul observe daylight saving time?: No. Seoul stays on KST (UTC+9) all year, so its clocks don't change.
What time is it in Seoul when it's 9 AM in Chicago?: 11:00 PM in Seoul, on the same day.

Or see every city pair, or plan with more places in the meeting planner.