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.

Bangkok to Honolulu

-17h

Bangkok

ICTSOURCE

Thailand · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Honolulu

HST

USA · UTC-10:00

HH07

MM00

(previous day)19:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Bangkok

Honolulu

12:00 AM

7:00 AM-1

2:00 AM

9:00 AM-1

4:00 AM

11:00 AM-1

6:00 AM

1:00 PM-1

8:00 AM

3:00 PM-1

10:00 AM

5:00 PM-1

12:00 PM

7:00 PM-1

2:00 PM

9:00 PM-1

4:00 PM

11:00 PM-1

6:00 PM

1:00 AM

8:00 PM

3:00 AM

10:00 PM

5:00 AM

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

ICT and HST on the World Map

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

ICT Zone

→

HST Zone

Explore all world timezones interactively →

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•Bangkok is one of the most visited cities in the world.
•ICT is 12 hours ahead of EST.
•Thailand, Vietnam, and Cambodia all share ICT.

Daylight Saving:No – UTC+07:00 year-round

Learn more about ICT 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 Bangkok

Wikipedia

Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.

Population:8.3 million

Metro:14.6 million

Business Hours:8:30 AM - 5:30 PM ICT

Currency:THB (฿)

Stock Exchange:SET (Stock Exchange of Thailand)

Key Landmarks

Grand PalaceWat ArunWat PhoChatuchak MarketKhao San Road

Did You Know?

Bangkok is one of the world's most visited cities, with over 22 million visitors annually.

Learn more about ICT timezone →

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 →

Everything You Need to Know About Bangkok and Honolulu Time

Bangkok runs on Indochina Time (ICT) at UTC+07:00. Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. That puts Bangkok 17 hours behind Honolulu — a difference of -17h at the current offsets.

In practice, when it is 9:00 AM in Bangkok it is 4:00 PM in Honolulu on the previous day. Midnight in Bangkok is 7:00 AM in Honolulu. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Bangkok to Honolulu time conversion table

Bangkok (ICT)	Honolulu (HST)	Day
12:00 AM	7:00 AM	previous day
6:00 AM	1:00 PM	previous day
7:00 AM	2:00 PM	previous day
8:00 AM	3:00 PM	previous day
9:00 AM	4:00 PM	previous day
12:00 PM	7:00 PM	previous day
3:00 PM	10:00 PM	previous day
5:00 PM	12:00 AM	same day
6:00 PM	1:00 AM	same day
9:00 PM	4:00 AM	same day

Why people convert Bangkok to Honolulu time

Scheduling a call from Bangkok to Honolulu: a 10:00 AM start in Bangkok lands at 5:00 PM in Honolulu the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -17h gap: Bangkok 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 4:00 PM in Bangkok.
Coordinating a Bangkok-based team with Honolulu contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -17h gap is not.
With a -17h gap there is no shared 9-to-5 window, so alternate the early start: one week Bangkok takes the early slot, the next week Honolulu does.

About ICT (Indochina Time)

Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.

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 Bangkok and Honolulu

With a -17h offset there is no overlap inside a normal 9 AM – 5 PM day. Honolulu opens at 9:00 AM HST, which is 4:00 PM in Bangkok, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Bangkok and Honolulu have no shared working hours because of the -17h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Bangkok is 17 hours behind Honolulu (ICT UTC+07:00 → 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 Bangkok and Honolulu?

Bangkok (ICT, UTC+07:00) is 17 hours behind Honolulu (HST, UTC-10:00). The gap is currently -17h.

How do I convert Bangkok time to Honolulu time?

Add -17h to Bangkok local time. For example, 9:00 AM in Bangkok is 4:00 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 -17h offset from Bangkok.

What is the best time to call Honolulu from Bangkok?

There is no shared working-hours window because of the -17h gap. The closest option is 1:00 PM in Bangkok, which is 8:00 PM in Honolulu.

Which is behind, Bangkok or Honolulu?

Bangkok is 17 hours behind Honolulu. When it is 12:00 PM in Bangkok it is 7:00 PM in Honolulu.

Do Bangkok and Honolulu use different time zones?

Bangkok (Thailand) uses ICT at UTC+07:00, while Honolulu (USA) uses HST at UTC-10:00. The IANA identifiers are Asia/Bangkok and Pacific/Honolulu.

Does daylight saving time affect the Bangkok–Honolulu difference?

Neither zone observes daylight saving time, so the -17h offset between Bangkok and Honolulu is fixed all year.

Which other cities share Bangkok's time zone?

ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.

Which countries use ICT, Bangkok's zone?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Is there a day difference between Bangkok and Honolulu?

Sometimes. The -17h gap is large enough that 8:00 PM or later in Bangkok already falls on the in Honolulu.

What is the time difference between Bangkok and Honolulu?

Honolulu is -17h from Bangkok.

What timezone is Bangkok in?

Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.

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 Bangkok?

Standard business hours in Bangkok are 8:30 AM - 5:30 PM ICT.

What are the business hours in Honolulu?

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

What is the best time to schedule a call between Bangkok and Honolulu?

The best overlap for a call is when both cities are in business hours. Bangkok works 8:30 AM - 5:30 PM ICT and Honolulu works 8:00 AM - 5:00 PM HST (-17h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Bangkok and Honolulu?

Bangkok uses THB (฿) while Honolulu uses USD ($). Check current exchange rates when planning travel or business between these cities.

How do Bangkok and Honolulu compare in size?

Bangkok has a population of approximately 8.3 million (metro: 14.6 million), while Honolulu has approximately 350,000 (metro: 1 million).

What are the major landmarks in Bangkok and Honolulu?

Bangkok is known for Grand Palace, Wat Arun, Wat Pho. Honolulu is famous for Waikiki Beach, Diamond Head, Pearl Harbor.

Do Bangkok and Honolulu have stock exchanges?

Yes. Bangkok has the SET (Stock Exchange of Thailand) and Honolulu has the N/A (Uses NYSE/NASDAQ). The -17h time difference affects trading hour overlaps between these exchanges.