Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Chicago to Dubai

+9h

Chicago

CDTSOURCE

USA · UTC-05:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Dubai

GST

UAE · UTC+04:00

HH09

MM00

21:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Chicago

Dubai

12:00 AM

9:00 AM

2:00 AM

11:00 AM

4:00 AM

1:00 PM

6:00 AM

3:00 PM

8:00 AM

5:00 PM

10:00 AM

7:00 PM

12:00 PM

9:00 PM

2:00 PM

11:00 PM

4:00 PM

1:00 AM+1

6:00 PM

3:00 AM+1

8:00 PM

5:00 AM+1

10:00 PM

7:00 AM+1

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

CDT and GST on the World Map

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

CDT Zone

→

GST 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

GST – Gulf Standard Time

UTC+04:00

Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.

Countries in GST

UAEOmanGeorgiaAzerbaijanMauritius

Major Cities in GST

DubaiAbu DhabiMuscatBakuTbilisi

Key Facts about GST

•Dubai uses GST year-round with no daylight saving time.
•GST is 9 hours ahead of EST and 4 hours ahead of GMT.
•The Dubai Financial Market (DFM) operates on GST.

Daylight Saving:No – UTC+04:00 year-round

Learn more about GST 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 →

About Dubai

Wikipedia

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

Population:3.5 million

Metro:4.1 million

Business Hours:8:00 AM - 6:00 PM GST

Currency:AED (د.إ)

Stock Exchange:DFM (Dubai Financial Market)

Key Landmarks

Burj KhalifaPalm JumeirahBurj Al ArabDubai MallDubai Frame

Did You Know?

Dubai has no income tax, making it a major hub for international business.

Learn more about GST timezone →

Comparing Time Zones: Chicago and Dubai

Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. Dubai runs on Gulf Standard Time (GST) at UTC+04:00. That puts Chicago 9 hours ahead of Dubai — a difference of +9h at the current offsets.

In practice, when it is 9:00 AM in Chicago it is 6:00 PM in Dubai. Midnight in Chicago is 9:00 AM in Dubai.Chicago observes daylight saving time while Dubai does not, so the gap narrows or widens by an hour part of the year.

Chicago to Dubai time conversion table

Chicago (CDT)	Dubai (GST)	Day
12:00 AM	9:00 AM	same day
6:00 AM	3:00 PM	same day
7:00 AM	4:00 PM	same day
8:00 AM	5:00 PM	same day
9:00 AM	6:00 PM	same day
12:00 PM	9:00 PM	same day
3:00 PM	12:00 AM	next day
5:00 PM	2:00 AM	next day
6:00 PM	3:00 AM	next day
9:00 PM	6:00 AM	next day

Why people convert Chicago to Dubai time

Scheduling a call from Chicago to Dubai: a 10:00 AM start in Chicago lands at 7:00 PM in Dubai, so you can confirm the slot without doing the arithmetic yourself.
Handling a +9h gap: Chicago and Dubai 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 Dubai is 6:00 PM in Chicago.
Keeping family and friends in sync: knowing that 8:00 PM in Chicago is 5:00 AM in Dubai makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +9h gap is not.
With a +9h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week Dubai 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 +9h 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 GST (Gulf Standard Time)

Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.

Best time to call between Chicago and Dubai

With a +9h offset there is no overlap inside a normal 9 AM – 5 PM day. Dubai opens at 9:00 AM GST, which is 6:00 PM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Chicago and Dubai have no shared working hours because of the +9h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Chicago is 9 hours ahead of Dubai (CDT UTC-05:00 → GST UTC+04:00). 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

Dubai

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 Dubai?

Chicago (CDT, UTC-05:00) is 9 hours ahead of Dubai (GST, UTC+04:00). The gap is currently +9h.

How do I convert Chicago time to Dubai time?

Add +9h to Chicago local time. For example, 9:00 AM in Chicago is 6:00 PM in Dubai.

What time is it in Dubai right now?

Dubai uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +9h offset from Chicago.

What is the best time to call Dubai from Chicago?

There is no shared working-hours window because of the +9h gap. The closest option is 1:00 PM in Chicago, which is 10:00 PM in Dubai.

Which is ahead, Chicago or Dubai?

Chicago is 9 hours ahead of Dubai. When it is 12:00 PM in Chicago it is 9:00 PM in Dubai.

Do Chicago and Dubai use different time zones?

Chicago (USA) uses CDT at UTC-05:00, while Dubai (UAE) uses GST at UTC+04:00. The IANA identifiers are America/Chicago and Asia/Dubai.

Does daylight saving time affect the Chicago–Dubai difference?

Yes at the moment: Chicago is on daylight saving time and Dubai is not, so the +9h 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 Dubai?

Not normally. The +9h gap only pushes the date over for late-evening times.

What is the time difference between Chicago and Dubai?

Dubai is +9h 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 Dubai in?

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

What are the business hours in Chicago?

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

What are the business hours in Dubai?

Standard business hours in Dubai are 8:00 AM - 6:00 PM GST.

What is the best time to schedule a call between Chicago and Dubai?

The best overlap for a call is when both cities are in business hours. Chicago works 8:00 AM - 5:00 PM CST and Dubai works 8:00 AM - 6:00 PM GST (+9h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Chicago and Dubai?

Chicago uses USD ($) while Dubai uses AED (د.إ). Check current exchange rates when planning travel or business between these cities.

How do Chicago and Dubai compare in size?

Chicago has a population of approximately 2.7 million (metro: 9.5 million), while Dubai has approximately 3.5 million (metro: 4.1 million).

What are the major landmarks in Chicago and Dubai?

Chicago is known for Willis Tower, Millennium Park, Cloud Gate (The Bean). Dubai is famous for Burj Khalifa, Palm Jumeirah, Burj Al Arab.

Do Chicago and Dubai have stock exchanges?

Yes. Chicago has the CME (Chicago Mercantile Exchange), CBOE and Dubai has the DFM (Dubai Financial Market). The +9h time difference affects trading hour overlaps between these exchanges.