Chicago to ICT
+12hChicago
CDTSOURCEICT
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and ICT on the World Map
The map below highlights the CDT (Central Standard Time) and ICT (Indochina Time) timezone regions across the globe.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •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.
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
About Chicago
WikipediaChicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
The Chicago Board of Trade is the world's oldest futures and options exchange.
Chicago vs ICT: Offsets, DST and Best Call Times
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. ICT runs on Indochina Time (ICT) at UTC+07:00. That puts Chicago 12 hours ahead of ICT — a difference of +12h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 9:00 PM in ICT. Midnight in Chicago is 12:00 PM in ICT.Chicago observes daylight saving time while ICT does not, so the gap narrows or widens by an hour part of the year.
Chicago to ICT time conversion table
| Chicago (CDT) | ICT (ICT) | Day |
|---|---|---|
| 12:00 AM | 12:00 PM | same day |
| 6:00 AM | 6:00 PM | same day |
| 7:00 AM | 7:00 PM | same day |
| 8:00 AM | 8:00 PM | same day |
| 9:00 AM | 9:00 PM | same day |
| 12:00 PM | 12:00 AM | next day |
| 3:00 PM | 3:00 AM | next day |
| 5:00 PM | 5:00 AM | next day |
| 6:00 PM | 6:00 AM | next day |
| 9:00 PM | 9:00 AM | next day |
Why people convert Chicago to ICT time
- Scheduling a call from Chicago to ICT: a 10:00 AM start in Chicago lands at 10:00 PM in ICT, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +12h gap: Chicago and ICT 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 ICT is 9:00 PM in Chicago.
- Coordinating a Chicago-based team with ICT 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 +12h gap is not.
- With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week ICT 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 +12h 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 ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
Best time to call between Chicago and ICT
With a +12h offset there is no overlap inside a normal 9 AM – 5 PM day. ICT opens at 9:00 AM ICT, which is 9:00 PM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Chicago and ICT have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Chicago is 12 hours ahead of ICT (CDT UTC-05:00 → ICT UTC+07:00). 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
ICT
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:
Frequently Asked Questions
What is the time difference between Chicago and ICT?
Chicago (CDT, UTC-05:00) is 12 hours ahead of ICT (ICT, UTC+07:00). The gap is currently +12h.
How do I convert Chicago time to ICT time?
Add +12h to Chicago local time. For example, 9:00 AM in Chicago is 9:00 PM in ICT.
What time is it in ICT right now?
ICT uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +12h offset from Chicago.
What is the best time to call ICT from Chicago?
There is no shared working-hours window because of the +12h gap. The closest option is 1:00 PM in Chicago, which is 1:00 AM in ICT.
Which is ahead, Chicago or ICT?
Chicago is 12 hours ahead of ICT. When it is 12:00 PM in Chicago it is 12:00 AM in ICT.
Do Chicago and ICT use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while ICT uses ICT at UTC+07:00. The IANA identifiers are America/Chicago and Asia/Bangkok.
Does daylight saving time affect the Chicago–ICT difference?
Yes at the moment: Chicago is on daylight saving time and ICT is not, so the +12h 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 ICT?
Sometimes. The +12h gap is large enough that 8:00 PM or later in Chicago already falls on the next day in ICT.
What is the time difference between Chicago and ICT?
ICT is +12h 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 ICT in?
ICT 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 ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in Chicago, what time is it in ICT?
When it is 12:00 AM (midnight) in Chicago (CST), it is +12h later in ICT (ICT).
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