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).

Dhaka to BRT

-9h

Dhaka

BDSTSOURCE

Bangladesh · UTC+06:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

BRT

UTC-03:00

HH03

MM00

03:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Dhaka

BRT

12:00 AM

3:00 PM-1

2:00 AM

5:00 PM-1

4:00 AM

7:00 PM-1

6:00 AM

9:00 PM-1

8:00 AM

11:00 PM-1

10:00 AM

1:00 AM

12:00 PM

3:00 AM

2:00 PM

5:00 AM

4:00 PM

7:00 AM

6:00 PM

9:00 AM

8:00 PM

11:00 AM

10:00 PM

1:00 PM

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

BDST and BRT on the World Map

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

BDST Zone

→

BRT Zone

Explore all world timezones interactively →

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

BRT – Brasilia Time

UTC-03:00

Brasilia Time (BRT) is the time zone for eastern Brazil, 3 hours behind UTC.

Countries in BRT

Brazil (eastern)

Major Cities in BRT

São PauloRio de JaneiroBrasíliaBelo HorizonteSalvadorFortalezaRecifeCuritiba

Key Facts about BRT

•Brazil abolished daylight saving time in 2019.
•São Paulo is the largest city in the Southern Hemisphere.
•BRT is 2 hours ahead of EST.
•Brazil spans four different time zones.
•The B3 stock exchange in São Paulo operates on BRT.

Daylight Saving:No – UTC-03:00 year-round

Learn more about BRT on Wikipedia

About Dhaka

Wikipedia

Dhaka operates on Bangladesh Standard Time (BST), UTC+6. As the world's second-largest garment hub, Dhaka time coordinates global fashion supply chains.

Population:10.3 million

Metro:22.5 million

Business Hours:9:00 AM - 5:00 PM BST

Currency:BDT (৳)

Stock Exchange:DSE (Dhaka Stock Exchange)

Key Landmarks

Lalbagh FortAhsan ManzilNational Parliament HouseStar MosqueLiberation War Museum

Did You Know?

Bangladesh is the world's second-largest garment exporter after China.

Learn more about BDST timezone →

Dhaka to BRT Time Difference – Complete Guide

Dhaka runs on Bangladesh Standard Time (BDST) at UTC+06:00. BRT runs on Brasilia Time (BRT) at UTC-03:00. That puts Dhaka 9 hours behind BRT — a difference of -9h at the current offsets.

In practice, when it is 9:00 AM in Dhaka it is 12:00 AM in BRT. Midnight in Dhaka is 3:00 PM in BRT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Dhaka to BRT time conversion table

Dhaka (BDST)	BRT (BRT)	Day
12:00 AM	3:00 PM	previous day
6:00 AM	9:00 PM	previous day
7:00 AM	10:00 PM	previous day
8:00 AM	11:00 PM	previous day
9:00 AM	12:00 AM	same day
12:00 PM	3:00 AM	same day
3:00 PM	6:00 AM	same day
5:00 PM	8:00 AM	same day
6:00 PM	9:00 AM	same day
9:00 PM	12:00 PM	same day

Why people convert Dhaka to BRT time

Scheduling a call from Dhaka to BRT: a 10:00 AM start in Dhaka lands at 1:00 AM in BRT, so you can confirm the slot without doing the arithmetic yourself.
Handling a -9h gap: Dhaka and BRT 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 BRT is 12:00 AM in Dhaka.
Watching a live event or market open: Dhaka viewers need 12:00 AM in BRT to catch a 9:00 AM start there, and 9:00 AM if the event is anchored to Dhaka.

Always state the zone abbreviation, not just the hour. "3:00 PM BDST" 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 Dhaka takes the early slot, the next week BRT does.

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.

About BRT (Brasilia Time)

Brasilia Time (BRT) is the standard time in the most populous regions of Brazil, including São Paulo, Rio de Janeiro, and the capital Brasília. Brazil abolished daylight saving time in 2019, so BRT is now observed year-round in these regions. Brazil spans four time zones in total.

Best time to call between Dhaka and BRT

With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. BRT opens at 9:00 AM BRT, which is 12:00 AM in Dhaka, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

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

Dhaka is 9 hours behind BRT (BDST UTC+06:00 → BRT UTC-03:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

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 Dhaka and BRT?

Dhaka (BDST, UTC+06:00) is 9 hours behind BRT (BRT, UTC-03:00). The gap is currently -9h.

How do I convert Dhaka time to BRT time?

Add -9h to Dhaka local time. For example, 9:00 AM in Dhaka is 12:00 AM in BRT.

What time is it in BRT right now?

BRT uses BRT at UTC-03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -9h offset from Dhaka.

What is the best time to call BRT from Dhaka?

There is no shared working-hours window because of the -9h gap. The closest option is 1:00 PM in Dhaka, which is 4:00 AM in BRT.

Which is behind, Dhaka or BRT?

Dhaka is 9 hours behind BRT. When it is 12:00 PM in Dhaka it is 3:00 AM in BRT.

Do Dhaka and BRT use different time zones?

Dhaka (Bangladesh) uses BDST at UTC+06:00, while BRT uses BRT at UTC-03:00. The IANA identifiers are Asia/Dhaka and America/Sao_Paulo.

Does daylight saving time affect the Dhaka–BRT difference?

Neither zone observes daylight saving time, so the -9h offset between Dhaka and BRT is fixed all year.

Which other cities share Dhaka's time zone?

BDST also covers Dhaka, Chittagong, Khulna, Rajshahi, Sylhet.

Which countries use BDST, Dhaka's zone?

BDST is used in Bangladesh.

Is there a day difference between Dhaka and BRT?

Not normally. The -9h gap only pushes the date over the previous day.

What is the time difference between Dhaka and BRT?

BRT is -9h from Dhaka.

What timezone is Dhaka in?

Dhaka operates on Bangladesh Standard Time (BST), UTC+6. As the world's second-largest garment hub, Dhaka time coordinates global fashion supply chains.

What timezone is BRT in?

BRT operates on its local timezone.

What are the business hours in Dhaka?

Standard business hours in Dhaka are 9:00 AM - 5:00 PM BST.

Which countries use BDST (Bangladesh Standard Time)?

BDST is used in Bangladesh.

Does BDST observe daylight saving time?

No, BDST does not observe daylight saving time and remains at UTC+06:00 year-round.

What are some interesting 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.