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 BDST

+11h

Chicago

CDTSOURCE

USA · UTC-05:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

BDST

UTC+06:00

HH11

MM00

23:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Chicago

BDST

12:00 AM

11:00 AM

2:00 AM

1:00 PM

4:00 AM

3:00 PM

6:00 AM

5:00 PM

8:00 AM

7:00 PM

10:00 AM

9:00 PM

12:00 PM

11:00 PM

2:00 PM

1:00 AM+1

4:00 PM

3:00 AM+1

6:00 PM

5:00 AM+1

8:00 PM

7:00 AM+1

10:00 PM

9:00 AM+1

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

CDT and BDST on the World Map

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

CDT Zone

→

BDST 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

BDST – Bangladesh Standard Time

UTC+06:00

Bangladesh Standard Time (BDST, UTC+06:00) is the time zone for Bangladesh, 6 hours ahead of UTC.

Countries in BDST

Bangladesh

Major Cities in BDST

DhakaChittagongKhulnaRajshahiSylhet

Key Facts about BDST

•Bangladesh uses a single time zone, UTC+06:00, across the entire country.
•Bangladesh does not observe daylight saving time, so the offset is fixed all year.
•Dhaka is one of the most densely populated cities globally.
•BDST is written here to distinguish it from British Summer Time (BST).

Daylight Saving:No – UTC+06:00 year-round

Learn more about BDST 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 to BDST Time Difference – Complete Guide

Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. BDST runs on Bangladesh Standard Time (BDST) at UTC+06:00. That puts Chicago 11 hours ahead of BDST — a difference of +11h at the current offsets.

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

Chicago to BDST time conversion table

Chicago (CDT)	BDST (BDST)	Day
12:00 AM	11:00 AM	same day
6:00 AM	5:00 PM	same day
7:00 AM	6:00 PM	same day
8:00 AM	7:00 PM	same day
9:00 AM	8:00 PM	same day
12:00 PM	11:00 PM	same day
3:00 PM	2:00 AM	next day
5:00 PM	4:00 AM	next day
6:00 PM	5:00 AM	next day
9:00 PM	8:00 AM	next day

Why people convert Chicago to BDST time

Scheduling a call from Chicago to BDST: a 10:00 AM start in Chicago lands at 9:00 PM in BDST, so you can confirm the slot without doing the arithmetic yourself.
Handling a +11h gap: Chicago and BDST 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 BDST is 8:00 PM in Chicago.
Watching a live event or market open: Chicago viewers need 8:00 PM in BDST to catch a 9:00 AM start there, and 1:00 PM if the event is anchored to Chicago.

Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +11h gap is not.
With a +11h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week BDST 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 +11h 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 BDST (Bangladesh Standard Time)

Bangladesh Standard Time (BDST) is the single time zone used across Bangladesh, fixed at UTC+06:00 all year. Bangladesh has not observed daylight saving time since a short-lived experiment in 2009, so the gap between Bangladesh and every other zone is constant. Dhaka, the capital, is one of the most densely populated cities in the world. Because the country sits close to the middle of the UTC+06:00 band, solar noon is near 12:00 for most of the year. BDST is listed separately from British Summer Time, which shares the BST abbreviation but is UTC+01:00.

Best time to call between Chicago and BDST

With a +11h offset there is no overlap inside a normal 9 AM – 5 PM day. BDST opens at 9:00 AM BDST, which is 8:00 PM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Chicago and BDST have no shared working hours because of the +11h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Chicago is 11 hours ahead of BDST (CDT UTC-05:00 → BDST UTC+06:00). 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

BDST

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 BDST?

Chicago (CDT, UTC-05:00) is 11 hours ahead of BDST (BDST, UTC+06:00). The gap is currently +11h.

How do I convert Chicago time to BDST time?

Add +11h to Chicago local time. For example, 9:00 AM in Chicago is 8:00 PM in BDST.

What time is it in BDST right now?

BDST uses BDST at UTC+06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +11h offset from Chicago.

What is the best time to call BDST from Chicago?

There is no shared working-hours window because of the +11h gap. The closest option is 1:00 PM in Chicago, which is 12:00 AM in BDST.

Which is ahead, Chicago or BDST?

Chicago is 11 hours ahead of BDST. When it is 12:00 PM in Chicago it is 11:00 PM in BDST.

Do Chicago and BDST use different time zones?

Chicago (USA) uses CDT at UTC-05:00, while BDST uses BDST at UTC+06:00. The IANA identifiers are America/Chicago and Asia/Dhaka.

Does daylight saving time affect the Chicago–BDST difference?

Yes at the moment: Chicago is on daylight saving time and BDST is not, so the +11h 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 BDST?

Not normally. The +11h gap only pushes the date over for late-evening times.

What is the time difference between Chicago and BDST?

BDST is +11h 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 BDST in?

BDST 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 BDST timezone?

Major cities in the BDST timezone include Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.

What is the UTC offset for BDST?

Bangladesh Standard Time (BDST) is at UTC+06:00.

What should I know about the BDST timezone?

Bangladesh uses a single time zone, UTC+06:00, across the entire country. Bangladesh does not observe daylight saving time, so the offset is fixed all year.