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).

Honolulu to HKT

+18h

Honolulu

HSTSOURCE

USA · UTC-10:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

HKT

UTC+08:00

HH06

MM00

(next day)06:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Honolulu

HKT

12:00 AM

6:00 PM

2:00 AM

8:00 PM

4:00 AM

10:00 PM

6:00 AM

12:00 AM+1

8:00 AM

2:00 AM+1

10:00 AM

4:00 AM+1

12:00 PM

6:00 AM+1

2:00 PM

8:00 AM+1

4:00 PM

10:00 AM+1

6:00 PM

12:00 PM+1

8:00 PM

2:00 PM+1

10:00 PM

4:00 PM+1

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

HST and HKT on the World Map

The map below highlights the HST (Hawaii Standard Time) and HKT (Hong Kong Time) timezone regions across the globe.

HST Zone

→

HKT Zone

Explore all world timezones interactively →

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

HKT – Hong Kong Time

UTC+08:00

Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.

Countries in HKT

Hong Kong SAR

Major Cities in HKT

Hong KongKowloonTsuen WanSha Tin

Key Facts about HKT

•Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979.
•HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
•The Hong Kong Stock Exchange opens at 09:30 HKT.
•Hong Kong Time does not change with the seasons, so its gap to other zones is fixed.

Daylight Saving:No – UTC+08:00 year-round

Learn more about HKT 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 →

Comparing Time Zones: Honolulu and HKT

Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. HKT runs on Hong Kong Time (HKT) at UTC+08:00. That puts Honolulu 18 hours ahead of HKT — a difference of +18h at the current offsets.

In practice, when it is 9:00 AM in Honolulu it is 3:00 AM in HKT on the next day. Midnight in Honolulu is 6:00 PM in HKT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Honolulu to HKT time conversion table

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

Why people convert Honolulu to HKT time

Scheduling a call from Honolulu to HKT: a 10:00 AM start in Honolulu lands at 4:00 AM in HKT the next day, so you can confirm the slot without doing the arithmetic yourself.
Handling a +18h gap: Honolulu and HKT 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 HKT is 3:00 AM in Honolulu.
Keeping family and friends in sync: knowing that 8:00 PM in Honolulu is 2:00 PM in HKT 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 +18h gap is not.
With a +18h gap there is no shared 9-to-5 window, so alternate the early start: one week Honolulu takes the early slot, the next week HKT 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 HKT (Hong Kong Time)

Hong Kong Time (HKT) is fixed at UTC+08:00 all year and does not observe daylight saving time. Hong Kong last used summer time in 1979 and has kept a single offset since. HKT shares the UTC+08:00 offset with China Standard Time, Singapore Time, Malaysian Time, Philippine Time and Australian Western Standard Time, but is listed separately because Hong Kong maintains its own timekeeping authority. As a major financial centre, Hong Kong's trading hours set the rhythm for markets across Asia, opening at 09:30 HKT which is 01:30 in London and 20:30 the previous evening in New York.

Best time to call between Honolulu and HKT

With a +18h offset there is no overlap inside a normal 9 AM – 5 PM day. HKT opens at 9:00 AM HKT, which is 3:00 AM in Honolulu, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Honolulu and HKT have no shared working hours because of the +18h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Honolulu is 18 hours ahead of HKT (HST UTC-10:00 → HKT UTC+08:00). 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 Honolulu and HKT?

Honolulu (HST, UTC-10:00) is 18 hours ahead of HKT (HKT, UTC+08:00). The gap is currently +18h.

How do I convert Honolulu time to HKT time?

Add +18h to Honolulu local time. For example, 9:00 AM in Honolulu is 3:00 AM in HKT (next day).

What time is it in HKT right now?

HKT uses HKT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +18h offset from Honolulu.

What is the best time to call HKT from Honolulu?

There is no shared working-hours window because of the +18h gap. The closest option is 1:00 PM in Honolulu, which is 7:00 AM in HKT.

Which is ahead, Honolulu or HKT?

Honolulu is 18 hours ahead of HKT. When it is 12:00 PM in Honolulu it is 6:00 AM in HKT.

Do Honolulu and HKT use different time zones?

Honolulu (USA) uses HST at UTC-10:00, while HKT uses HKT at UTC+08:00. The IANA identifiers are Pacific/Honolulu and Asia/Hong_Kong.

Does daylight saving time affect the Honolulu–HKT difference?

Neither zone observes daylight saving time, so the +18h offset between Honolulu and HKT 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 HKT?

Sometimes. The +18h gap is large enough that 8:00 PM or later in Honolulu already falls on the next day in HKT.

What is the time difference between Honolulu and HKT?

HKT is +18h 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 HKT in?

HKT operates on its local timezone.

What are the business hours in Honolulu?

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

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 HKT timezone?

Major cities in the HKT timezone include Hong Kong, Kowloon, Tsuen Wan, Sha Tin.

What is the UTC offset for HKT?

Hong Kong Time (HKT) is at UTC+08:00.

What should I know about the HKT timezone?

Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979. HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.