Ferramentas Intosoft

Chicago to KST

+14h

Chicago

CDTSOURCE
USA · UTC-05:00☀ DST active
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

KST

KST
UTC+09:00
HH02
:
MM00
  
(next day)02:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
Chicago
KST
12:00 AM
2:00 PM
2:00 AM
4:00 PM
4:00 AM
6:00 PM
6:00 AM
8:00 PM
8:00 AM
10:00 PM
10:00 AM
12:00 AM+1
12:00 PM
2:00 AM+1
2:00 PM
4:00 AM+1
4:00 PM
6:00 AM+1
6:00 PM
8:00 AM+1
8:00 PM
10:00 AM+1
10:00 PM
12:00 PM+1

Green rows indicate typical business hours (9 AM - 5 PM)

CDT and KST on the World Map

The map below highlights the CDT (Central Standard Time) and KST (Korea Standard Time) timezone regions across the globe.

CDTKSTChicagoHoustonDallasSan AntonioSeoulBusanIncheonDaegu
CDT Zone
→
KST Zone

Explore all world timezones interactively →

CST – Central Standard Time

UTC-06:00

Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.

Countries in CST
United States (Central)Canada (Manitoba, Saskatchewan)MexicoGuatemalaHondurasEl SalvadorCosta RicaNicaraguaBelize
Major Cities in CST
ChicagoHoustonDallasSan AntonioMexico CityAustinWinnipegMemphisMilwaukeeNashvilleKansas CityNew OrleansMinneapolisGuatemala City
Key Facts about CST
  • •CST covers 20 US states fully or partially.
  • •Chicago and Houston are the two largest cities in the Central Time Zone.
  • •Mexico City, one of the world's most populous cities, operates on CST.
  • •CST is 1 hour behind EST and 2 hours ahead of PST.
Daylight Saving:Yes – switches to CDT
Learn more about CST on Wikipedia

KST – Korea Standard Time

UTC+09:00

Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.

Countries in KST
South KoreaNorth Korea
Major Cities in KST
SeoulBusanIncheonDaeguDaejeonPyongyang
Key Facts about KST
  • •South Korea does not observe daylight saving time.
  • •Seoul is home to Samsung, LG, and Hyundai headquarters.
  • •KST is the same offset as JST (UTC+09:00).
Daylight Saving:No – UTC+09:00 year-round
Learn more about KST on Wikipedia

About Chicago

Wikipedia

Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.

Population:2.7 million
Metro:9.5 million
Business Hours:8:00 AM - 5:00 PM CST
Currency:USD ($)
Stock Exchange:CME (Chicago Mercantile Exchange), CBOE
Key Landmarks
Willis TowerMillennium ParkCloud Gate (The Bean)Navy PierArt Institute of Chicago
Did You Know?

The Chicago Board of Trade is the world's oldest futures and options exchange.

Learn more about CDT timezone →

Chicago vs KST: Offsets, DST and Best Call Times

Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. KST runs on Korea Standard Time (KST) at UTC+09:00. That puts Chicago 14 hours ahead of KST — a difference of +14h at the current offsets.

In practice, when it is 9:00 AM in Chicago it is 11:00 PM in KST. Midnight in Chicago is 2:00 PM in KST.Chicago observes daylight saving time while KST does not, so the gap narrows or widens by an hour part of the year.

Chicago to KST time conversion table

Chicago (CDT)KST (KST)Day
12:00 AM2:00 PMsame day
6:00 AM8:00 PMsame day
7:00 AM9:00 PMsame day
8:00 AM10:00 PMsame day
9:00 AM11:00 PMsame day
12:00 PM2:00 AMnext day
3:00 PM5:00 AMnext day
5:00 PM7:00 AMnext day
6:00 PM8:00 AMnext day
9:00 PM11:00 AMnext day

Why people convert Chicago to KST time

  • Scheduling a call from Chicago to KST: a 10:00 AM start in Chicago lands at 12:00 AM in KST the next day, so you can confirm the slot without doing the arithmetic yourself.
  • Handling a +14h gap: Chicago and KST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in KST is 11:00 PM in Chicago.
  • Booking travel or deliveries: tracking KST local time against Chicago keeps pickup windows and arrival estimates honest across the +14h offset.
  • Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +14h gap is not.
  • With a +14h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week KST does.
  • Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +14h gap.

About CST (Central Standard Time)

Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.

About KST (Korea Standard Time)

Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.

Best time to call between Chicago and KST

With a +14h offset there is no overlap inside a normal 9 AM – 5 PM day. KST opens at 9:00 AM KST, which is 11:00 PM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Chicago and KST have no shared working hours because of the +14h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Chicago is 14 hours ahead of KST (CDT UTC-05:00 → KST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Chicago

☀ Currently in DST

Standard: UTC-06:00 · DST: UTC-05:00

Clocks fall back on Sun, Nov 1, 2026

KST

Does not observe DST

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳
History of Timekeeping
From sundials to atomic clocks - 5000 years of measuring time
🌍
How Time Zones Work
UTC, offsets, and why zones don't follow straight lines
☀️
Daylight Saving Time
DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Chicago and KST?

Chicago (CDT, UTC-05:00) is 14 hours ahead of KST (KST, UTC+09:00). The gap is currently +14h.

How do I convert Chicago time to KST time?

Add +14h to Chicago local time. For example, 9:00 AM in Chicago is 11:00 PM in KST.

What time is it in KST right now?

KST uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +14h offset from Chicago.

What is the best time to call KST from Chicago?

There is no shared working-hours window because of the +14h gap. The closest option is 1:00 PM in Chicago, which is 3:00 AM in KST.

Which is ahead, Chicago or KST?

Chicago is 14 hours ahead of KST. When it is 12:00 PM in Chicago it is 2:00 AM in KST.

Do Chicago and KST use different time zones?

Chicago (USA) uses CDT at UTC-05:00, while KST uses KST at UTC+09:00. The IANA identifiers are America/Chicago and Asia/Seoul.

Does daylight saving time affect the Chicago–KST difference?

Yes at the moment: Chicago is on daylight saving time and KST is not, so the +14h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Chicago's time zone?

CDT also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.

Which countries use CDT, Chicago's zone?

CDT is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.

Is there a day difference between Chicago and KST?

Sometimes. The +14h gap is large enough that 8:00 PM or later in Chicago already falls on the next day in KST.

What is the time difference between Chicago and KST?

KST is +14h from Chicago.

What timezone is Chicago in?

Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.

What timezone is KST in?

KST operates on its local timezone.

What are the business hours in Chicago?

Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.

Which countries use CST (Central Standard Time)?

CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.

Does CST observe daylight saving time?

Yes, CST switches to CDT during summer months.

What are some interesting facts about CST?

CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.

Which cities are in the KST timezone?

Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.

What is the UTC offset for KST?

Korea Standard Time (KST) is at UTC+09:00.

What should I know about the KST timezone?

South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.

When is it midnight in Chicago, what time is it in KST?

When it is 12:00 AM (midnight) in Chicago (CST), it is +14h later in KST (KST).

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