Ferramentas Intosoft

Chicago to CST

-1h

Chicago

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

CST

CST
UTC-05:00☀ DST active
HH11
:
MM00
  
11:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
Chicago
CST
12:00 AM
12:00 AM
2:00 AM
2:00 AM
4:00 AM
4:00 AM
6:00 AM
6:00 AM
8:00 AM
8:00 AM
10:00 AM
10:00 AM
12:00 PM
12:00 PM
2:00 PM
2:00 PM
4:00 PM
4:00 PM
6:00 PM
6:00 PM
8:00 PM
8:00 PM
10:00 PM
10:00 PM

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

CDT and CST on the World Map

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

CDTCSTChicagoHoustonDallasSan AntonioChicagoHoustonDallasSan Antonio
CDT Zone
→
CST 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

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

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 →

Understanding the -1h Gap: Chicago vs CST

Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. CST runs on Central Standard Time (CST) at UTC-06:00. That puts Chicago 1 hour behind CST — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in Chicago it is 8:00 AM in CST. Midnight in Chicago is 11:00 PM in CST.Chicago observes daylight saving time while CST does not, so the gap narrows or widens by an hour part of the year.

Chicago to CST time conversion table

Chicago (CDT)CST (CST)Day
12:00 AM11:00 PMprevious day
6:00 AM5:00 AMsame day
7:00 AM6:00 AMsame day
8:00 AM7:00 AMsame day
9:00 AM8:00 AMsame day
12:00 PM11:00 AMsame day
3:00 PM2:00 PMsame day
5:00 PM4:00 PMsame day
6:00 PM5:00 PMsame day
9:00 PM8:00 PMsame day

Why people convert Chicago to CST time

  • Scheduling a call from Chicago to CST: a 10:00 AM start in Chicago lands at 9:00 AM in CST, so you can confirm the slot without doing the arithmetic yourself.
  • Finding shared working hours: both Chicago and CST are inside the 9-to-5 working day between 10:00 AM and 5:00 PM CDT time (9:00 AM–4:00 PM CST). That is roughly 7 hours of usable overlap.
  • Coordinating a Chicago-based team with CST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
  • Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a -1h gap is not.
  • Block 10:00 AM–5:00 PM CDT as the recurring meeting window if you work primarily from Chicago and need CST colleagues present.
  • Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the -1h 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 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.

Best time to call between Chicago and CST

Both Chicago and CST sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM CDT, which is 9:00 AM–4:00 PM CST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Chicago and CST share 7 hours of working-hours overlap (10:00 AM–5:00 PM CDT), so scheduling a live meeting is straightforward.

Chicago is 1 hour behind CST (CDT UTC-05:00 → CST UTC-06:00). The shared working window is 10:00 AM–5:00 PM CDT. 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

CST

☀ Currently in DST

Standard: UTC-06:00 · DST: UTC-05:00

Clocks fall back on Sun, Nov 1, 2026

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 CST?

Chicago (CDT, UTC-05:00) is 1 hour behind CST (CST, UTC-06:00). The gap is currently -1h.

How do I convert Chicago time to CST time?

Add -1h to Chicago local time. For example, 9:00 AM in Chicago is 8:00 AM in CST.

What time is it in CST right now?

CST uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Chicago.

What is the best time to call CST from Chicago?

Call between 10:00 AM and 5:00 PM CDT — that maps to 9:00 AM–4:00 PM CST and keeps both parties inside the working day.

Which is behind, Chicago or CST?

Chicago is 1 hour behind CST. When it is 12:00 PM in Chicago it is 11:00 AM in CST.

Do Chicago and CST use different time zones?

Chicago (USA) uses CDT at UTC-05:00, while CST uses CST at UTC-06:00. They actually share the same IANA zone.

Does daylight saving time affect the Chicago–CST difference?

Yes at the moment: Chicago is on daylight saving time and CST is not, so the -1h 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 CST?

Not normally. The -1h gap only pushes the date over the previous day.

What is the time difference between Chicago and CST?

CST is -1h 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 CST in?

CST 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 CST timezone?

Major cities in the CST timezone include Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis.

What is the UTC offset for CST?

Central Standard Time (CST) is at UTC-06:00. During daylight saving time, it shifts to CDT.

What should I know about the CST timezone?

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

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

When it is 12:00 AM (midnight) in Chicago (CST), it is -1h later in CST (CST).

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