Honolulu to Bangkok
+17hHonolulu
HSTSOURCEBangkok
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and ICT on the World Map
The map below highlights the HST (Hawaii Standard Time) and ICT (Indochina Time) timezone regions across the globe.
HST – Hawaii Standard Time
UTC-10:00Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.
- •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).
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •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.
About Honolulu
WikipediaHonolulu 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.
Pearl Harbor memorial receives over 2 million visitors annually.
About Bangkok
WikipediaBangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.
Bangkok is one of the world's most visited cities, with over 22 million visitors annually.
Everything You Need to Know About Honolulu and Bangkok Time
Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. Bangkok runs on Indochina Time (ICT) at UTC+07:00. That puts Honolulu 17 hours ahead of Bangkok — a difference of +17h at the current offsets.
In practice, when it is 9:00 AM in Honolulu it is 2:00 AM in Bangkok on the next day. Midnight in Honolulu is 5:00 PM in Bangkok. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Honolulu to Bangkok time conversion table
| Honolulu (HST) | Bangkok (ICT) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | same day |
| 6:00 AM | 11:00 PM | same day |
| 7:00 AM | 12:00 AM | next day |
| 8:00 AM | 1:00 AM | next day |
| 9:00 AM | 2:00 AM | next day |
| 12:00 PM | 5:00 AM | next day |
| 3:00 PM | 8:00 AM | next day |
| 5:00 PM | 10:00 AM | next day |
| 6:00 PM | 11:00 AM | next day |
| 9:00 PM | 2:00 PM | next day |
Why people convert Honolulu to Bangkok time
- Scheduling a call from Honolulu to Bangkok: a 10:00 AM start in Honolulu lands at 3:00 AM in Bangkok the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +17h gap: Honolulu and Bangkok 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 Bangkok is 2:00 AM in Honolulu.
- Keeping family and friends in sync: knowing that 8:00 PM in Honolulu is 1:00 PM in Bangkok makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" 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 Honolulu takes the early slot, the next week Bangkok does.
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.
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.
Best time to call between Honolulu and Bangkok
With a +17h offset there is no overlap inside a normal 9 AM – 5 PM day. Bangkok opens at 9:00 AM ICT, which is 2:00 AM in Honolulu, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Honolulu and Bangkok have no shared working hours because of the +17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Honolulu is 17 hours ahead of Bangkok (HST UTC-10:00 → ICT UTC+07:00). 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:
Frequently Asked Questions
What is the time difference between Honolulu and Bangkok?
Honolulu (HST, UTC-10:00) is 17 hours ahead of Bangkok (ICT, UTC+07:00). The gap is currently +17h.
How do I convert Honolulu time to Bangkok time?
Add +17h to Honolulu local time. For example, 9:00 AM in Honolulu is 2:00 AM in Bangkok (next day).
What time is it in Bangkok right now?
Bangkok uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +17h offset from Honolulu.
What is the best time to call Bangkok from Honolulu?
There is no shared working-hours window because of the +17h gap. The closest option is 1:00 PM in Honolulu, which is 6:00 AM in Bangkok.
Which is ahead, Honolulu or Bangkok?
Honolulu is 17 hours ahead of Bangkok. When it is 12:00 PM in Honolulu it is 5:00 AM in Bangkok.
Do Honolulu and Bangkok use different time zones?
Honolulu (USA) uses HST at UTC-10:00, while Bangkok (Thailand) uses ICT at UTC+07:00. The IANA identifiers are Pacific/Honolulu and Asia/Bangkok.
Does daylight saving time affect the Honolulu–Bangkok difference?
Neither zone observes daylight saving time, so the +17h offset between Honolulu and Bangkok is fixed all year.
Which other cities share Honolulu's time zone?
HST also covers Honolulu, Hilo, Kailua, Pearl City, Kapolei.
Which countries use HST, Honolulu's zone?
HST is used in United States (Hawaii).
Is there a day difference between Honolulu and Bangkok?
Sometimes. The +17h gap is large enough that 8:00 PM or later in Honolulu already falls on the next day in Bangkok.
What is the time difference between Honolulu and Bangkok?
Bangkok is +17h from Honolulu.
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 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 are the business hours in Honolulu?
Standard business hours in Honolulu are 8:00 AM - 5:00 PM HST.
What are the business hours in Bangkok?
Standard business hours in Bangkok are 8:30 AM - 5:30 PM ICT.
What is the best time to schedule a call between Honolulu and Bangkok?
The best overlap for a call is when both cities are in business hours. Honolulu works 8:00 AM - 5:00 PM HST and Bangkok works 8:30 AM - 5:30 PM ICT (+17h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Honolulu and Bangkok?
Honolulu uses USD ($) while Bangkok uses THB (฿). Check current exchange rates when planning travel or business between these cities.
How do Honolulu and Bangkok compare in size?
Honolulu has a population of approximately 350,000 (metro: 1 million), while Bangkok has approximately 8.3 million (metro: 14.6 million).
What are the major landmarks in Honolulu and Bangkok?
Honolulu is known for Waikiki Beach, Diamond Head, Pearl Harbor. Bangkok is famous for Grand Palace, Wat Arun, Wat Pho.
Do Honolulu and Bangkok have stock exchanges?
Yes. Honolulu has the N/A (Uses NYSE/NASDAQ) and Bangkok has the SET (Stock Exchange of Thailand). The +17h time difference affects trading hour overlaps between these exchanges.
Which countries use HST (Hawaii Standard Time)?
HST is used in United States (Hawaii).
Does HST observe daylight saving time?
No, HST does not observe daylight saving time and remains at UTC-10:00 year-round.
What are some interesting 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.
Which cities are in the ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in Honolulu, what time is it in Bangkok?
When it is 12:00 AM (midnight) in Honolulu (HST), it is +17h later in Bangkok (ICT).
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