Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

IST to Dhaka

+0h 30m

IST

ISTSOURCE

UTC+05:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Dhaka

BDST

Bangladesh · UTC+06:00

HH12

MM30

12:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

IST

Dhaka

12:00 AM

12:30 AM

2:00 AM

2:30 AM

4:00 AM

4:30 AM

6:00 AM

6:30 AM

8:00 AM

8:30 AM

10:00 AM

10:30 AM

12:00 PM

12:30 PM

2:00 PM

2:30 PM

4:00 PM

4:30 PM

6:00 PM

6:30 PM

8:00 PM

8:30 PM

10:00 PM

10:30 PM

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

IST and BDST on the World Map

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

IST Zone

→

BDST Zone

Explore all world timezones interactively →

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST

IndiaSri Lanka

Major Cities in IST

MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat

Key Facts about IST

•India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
•India uses a single time zone despite spanning 30° of longitude.
•IST is one of only a handful of time zones with a 30-minute offset.
•IST is the most populous single time zone in the world with over 1.4 billion people.
•The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.

Daylight Saving:No – UTC+05:30 year-round

Learn more about IST 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 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 →

Everything You Need to Know About IST and Dhaka Time

IST runs on India Standard Time (IST) at UTC+05:30. Dhaka runs on Bangladesh Standard Time (BDST) at UTC+06:00. That puts IST 30 minutes ahead of Dhaka — a difference of +0h 30m at the current offsets.

In practice, when it is 9:00 AM in IST it is 9:30 AM in Dhaka. Midnight in IST is 12:30 AM in Dhaka. Neither zone observes daylight saving time, so the offset between them stays constant all year.

IST to Dhaka time conversion table

IST (IST)	Dhaka (BDST)	Day
12:00 AM	12:30 AM	same day
6:00 AM	6:30 AM	same day
7:00 AM	7:30 AM	same day
8:00 AM	8:30 AM	same day
9:00 AM	9:30 AM	same day
12:00 PM	12:30 PM	same day
3:00 PM	3:30 PM	same day
5:00 PM	5:30 PM	same day
6:00 PM	6:30 PM	same day
9:00 PM	9:30 PM	same day

Why people convert IST to Dhaka time

Scheduling a call from IST to Dhaka: a 10:00 AM start in IST lands at 10:30 AM in Dhaka, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both IST and Dhaka are inside the 9-to-5 working day between 9:00 AM and 4:30 PM IST time (9:30 AM–5:00 PM BDST). That is roughly 7 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking Dhaka local time against IST keeps pickup windows and arrival estimates honest across the +0h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +0h 30m gap is not.
Block 9:00 AM–4:30 PM IST as the recurring meeting window if you work primarily from IST and need Dhaka colleagues present.

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

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 IST and Dhaka

Both IST and Dhaka sit inside the 9 AM – 5 PM working day between 9:00 AM–4:30 PM IST, which is 9:30 AM–5:00 PM BDST. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

IST and Dhaka share 7 hours of working-hours overlap (9:00 AM–4:30 PM IST), so scheduling a live meeting is straightforward.

IST is 30 minutes ahead of Dhaka (IST UTC+05:30 → BDST UTC+06:00). The shared working window is 9:00 AM–4:30 PM IST. 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 IST and Dhaka?

IST (IST, UTC+05:30) is 30 minutes ahead of Dhaka (BDST, UTC+06:00). The gap is currently +0h 30m.

How do I convert IST time to Dhaka time?

Add +0h 30m to IST local time. For example, 9:00 AM in IST is 9:30 AM in Dhaka.

What time is it in Dhaka right now?

Dhaka 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 +0h 30m offset from IST.

What is the best time to call Dhaka from IST?

Call between 9:00 AM and 4:30 PM IST — that maps to 9:30 AM–5:00 PM BDST and keeps both parties inside the working day.

Which is ahead, IST or Dhaka?

IST is 30 minutes ahead of Dhaka. When it is 12:00 PM in IST it is 12:30 PM in Dhaka.

Do IST and Dhaka use different time zones?

IST uses IST at UTC+05:30, while Dhaka (Bangladesh) uses BDST at UTC+06:00. The IANA identifiers are Asia/Kolkata and Asia/Dhaka.

Does daylight saving time affect the IST–Dhaka difference?

Neither zone observes daylight saving time, so the +0h 30m offset between IST and Dhaka is fixed all year.

Which other cities share IST's time zone?

IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.

Which countries use IST, IST's zone?

IST is used in India, Sri Lanka.

Is there a day difference between IST and Dhaka?

Not normally. The +0h 30m gap only pushes the date over for late-evening times.

What is the time difference between IST and Dhaka?

Dhaka is +0h 30m from IST.

What timezone is IST in?

IST operates on its local timezone.

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 are the business hours in Dhaka?

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

Which countries use IST (India Standard Time)?

IST is used in India, Sri Lanka.

Does IST observe daylight saving time?

No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.

What are some interesting facts about IST?

India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.

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.