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).

BDST to Honolulu

-16h

BDST

BDSTSOURCE

UTC+06:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Honolulu

HST

USA · UTC-10:00

HH08

MM00

(previous day)20:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

BDST

Honolulu

12:00 AM

8:00 AM-1

2:00 AM

10:00 AM-1

4:00 AM

12:00 PM-1

6:00 AM

2:00 PM-1

8:00 AM

4:00 PM-1

10:00 AM

6:00 PM-1

12:00 PM

8:00 PM-1

2:00 PM

10:00 PM-1

4:00 PM

12:00 AM

6:00 PM

2:00 AM

8:00 PM

4:00 AM

10:00 PM

6:00 AM

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

BDST and HST on the World Map

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

BDST Zone

→

HST 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

HST – Hawaii Standard Time

UTC-10:00

Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.

Countries in HST

United States (Hawaii)

Major Cities in HST

HonoluluHiloKailuaPearl CityKapolei

Key Facts about HST

•Hawaii does not observe daylight saving time.
•HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
•Hawaii is one of only two US states that don't observe DST (the other is Arizona).

Daylight Saving:No – UTC-10:00 year-round

Learn more about HST on Wikipedia

About Honolulu

Wikipedia

Honolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.

Population:350,000

Metro:1 million

Business Hours:8:00 AM - 5:00 PM HST

Currency:USD ($)

Key Landmarks

Waikiki BeachDiamond HeadPearl HarborIolani PalaceHanauma Bay

Did You Know?

Pearl Harbor memorial receives over 2 million visitors annually.

Learn more about HST timezone →

BDST to Honolulu Time Difference – Complete Guide

BDST runs on Bangladesh Standard Time (BDST) at UTC+06:00. Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. That puts BDST 16 hours behind Honolulu — a difference of -16h at the current offsets.

In practice, when it is 9:00 AM in BDST it is 5:00 PM in Honolulu on the previous day. Midnight in BDST is 8:00 AM in Honolulu. Neither zone observes daylight saving time, so the offset between them stays constant all year.

BDST to Honolulu time conversion table

BDST (BDST)	Honolulu (HST)	Day
12:00 AM	8:00 AM	previous day
6:00 AM	2:00 PM	previous day
7:00 AM	3:00 PM	previous day
8:00 AM	4:00 PM	previous day
9:00 AM	5:00 PM	previous day
12:00 PM	8:00 PM	previous day
3:00 PM	11:00 PM	previous day
5:00 PM	1:00 AM	same day
6:00 PM	2:00 AM	same day
9:00 PM	5:00 AM	same day

Why people convert BDST to Honolulu time

Scheduling a call from BDST to Honolulu: a 10:00 AM start in BDST lands at 6:00 PM in Honolulu the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -16h gap: BDST and Honolulu 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 Honolulu is 5:00 PM in BDST.
Watching a live event or market open: BDST viewers need 5:00 PM in Honolulu to catch a 9:00 AM start there, and 4:00 PM if the event is anchored to BDST.

Always state the zone abbreviation, not just the hour. "3:00 PM BDST" is unambiguous; "3 PM" across a -16h gap is not.
With a -16h gap there is no shared 9-to-5 window, so alternate the early start: one week BDST takes the early slot, the next week Honolulu 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 HST (Hawaii Standard Time)

Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.

Best time to call between BDST and Honolulu

With a -16h offset there is no overlap inside a normal 9 AM – 5 PM day. Honolulu opens at 9:00 AM HST, which is 5:00 PM in BDST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

BDST and Honolulu have no shared working hours because of the -16h gap. Teams need to alternate early starts or rely on asynchronous handovers.

BDST is 16 hours behind Honolulu (BDST UTC+06:00 → HST UTC-10:00). 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 BDST and Honolulu?

BDST (BDST, UTC+06:00) is 16 hours behind Honolulu (HST, UTC-10:00). The gap is currently -16h.

How do I convert BDST time to Honolulu time?

Add -16h to BDST local time. For example, 9:00 AM in BDST is 5:00 PM in Honolulu (previous day).

What time is it in Honolulu right now?

Honolulu uses HST at UTC-10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -16h offset from BDST.

What is the best time to call Honolulu from BDST?

There is no shared working-hours window because of the -16h gap. The closest option is 1:00 PM in BDST, which is 9:00 PM in Honolulu.

Which is behind, BDST or Honolulu?

BDST is 16 hours behind Honolulu. When it is 12:00 PM in BDST it is 8:00 PM in Honolulu.

Do BDST and Honolulu use different time zones?

BDST uses BDST at UTC+06:00, while Honolulu (USA) uses HST at UTC-10:00. The IANA identifiers are Asia/Dhaka and Pacific/Honolulu.

Does daylight saving time affect the BDST–Honolulu difference?

Neither zone observes daylight saving time, so the -16h offset between BDST and Honolulu is fixed all year.

Which other cities share BDST's time zone?

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

Which countries use BDST, BDST's zone?

BDST is used in Bangladesh.

Is there a day difference between BDST and Honolulu?

Sometimes. The -16h gap is large enough that 8:00 PM or later in BDST already falls on the in Honolulu.

What is the time difference between BDST and Honolulu?

Honolulu is -16h from BDST.

What timezone is BDST in?

BDST operates on its local timezone.

What timezone is Honolulu in?

Honolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.

What are the business hours in Honolulu?

Standard business hours in Honolulu are 8:00 AM - 5:00 PM HST.

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.