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 NZDT

+23h

Honolulu

HSTSOURCE

USA · UTC-10:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

NZDT

UTC+13:00☀ DST active

HH11

MM00

(next day)11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Honolulu

NZDT

12:00 AM

11:00 PM

2:00 AM

1:00 AM+1

4:00 AM

3:00 AM+1

6:00 AM

5:00 AM+1

8:00 AM

7:00 AM+1

10:00 AM

9:00 AM+1

12:00 PM

11:00 AM+1

2:00 PM

1:00 PM+1

4:00 PM

3:00 PM+1

6:00 PM

5:00 PM+1

8:00 PM

7:00 PM+1

10:00 PM

9:00 PM+1

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

HST and NZDT on the World Map

The map below highlights the HST (Hawaii Standard Time) and NZDT (New Zealand Daylight Time) timezone regions across the globe.

HST Zone

→

NZDT 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

NZDT – New Zealand Daylight Time

UTC+13:00

New Zealand Daylight Time (NZDT, UTC+13:00) is New Zealand's summer time zone, one of the earliest offsets in the world.

Countries in NZDT

New Zealand

Major Cities in NZDT

AucklandWellingtonChristchurchHamiltonDunedin

Key Facts about NZDT

•NZDT runs from the last Sunday in September to the first Sunday in April.
•NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
•New Zealand changes its clocks two to three weeks before Australia.
•The Chatham Islands observe UTC+13:45 during their summer time.

Daylight Saving:Yes – switches to NZDT

Learn more about NZDT 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 →

Honolulu vs NZDT: Offsets, DST and Best Call Times

Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. NZDT runs on New Zealand Daylight Time (NZDT) at UTC+13:00. That puts Honolulu 23 hours ahead of NZDT — a difference of +23h at the current offsets.

In practice, when it is 9:00 AM in Honolulu it is 8:00 AM in NZDT on the next day. Midnight in Honolulu is 11:00 PM in NZDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Honolulu to NZDT time conversion table

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

Why people convert Honolulu to NZDT time

Scheduling a call from Honolulu to NZDT: a 10:00 AM start in Honolulu lands at 9:00 AM in NZDT the next day, so you can confirm the slot without doing the arithmetic yourself.
Handling a +23h gap: Honolulu and NZDT 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 NZDT is 8:00 AM in Honolulu.
Keeping family and friends in sync: knowing that 8:00 PM in Honolulu is 7:00 PM in NZDT 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 +23h gap is not.
With a +23h gap there is no shared 9-to-5 window, so alternate the early start: one week Honolulu takes the early slot, the next week NZDT 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 NZDT (New Zealand Daylight Time)

New Zealand Daylight Time (NZDT) is the summer time zone for New Zealand, one hour ahead of New Zealand Standard Time (NZST, UTC+12:00). It runs from the last Sunday in September to the first Sunday in April, so New Zealand shifts a week or two earlier in spring than Australia. At UTC+13:00, NZDT is among the earliest offsets in the world — only Samoa, Tonga and parts of Kiribati run further ahead at certain times of year. Auckland and Wellington are 13 hours ahead of UTC during NZDT, 12 hours ahead of Sydney, and 18 hours ahead of New York. The Chatham Islands, 45 minutes further east, move to UTC+13:45.

Best time to call between Honolulu and NZDT

With a +23h offset there is no overlap inside a normal 9 AM – 5 PM day. NZDT opens at 9:00 AM NZDT, which is 8:00 AM in Honolulu, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Honolulu and NZDT have no shared working hours because of the +23h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Honolulu is 23 hours ahead of NZDT (HST UTC-10:00 → NZDT UTC+13:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Honolulu

Does not observe DST

NZDT

☀ Currently in DST

Standard: UTC+12:00 · DST: UTC+13:00

Clocks fall back on Sat, Apr 3, 2027

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 NZDT?

Honolulu (HST, UTC-10:00) is 23 hours ahead of NZDT (NZDT, UTC+13:00). The gap is currently +23h.

How do I convert Honolulu time to NZDT time?

Add +23h to Honolulu local time. For example, 9:00 AM in Honolulu is 8:00 AM in NZDT (next day).

What time is it in NZDT right now?

NZDT uses NZDT at UTC+13:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +23h offset from Honolulu.

What is the best time to call NZDT from Honolulu?

There is no shared working-hours window because of the +23h gap. The closest option is 1:00 PM in Honolulu, which is 12:00 PM in NZDT.

Which is ahead, Honolulu or NZDT?

Honolulu is 23 hours ahead of NZDT. When it is 12:00 PM in Honolulu it is 11:00 AM in NZDT.

Do Honolulu and NZDT use different time zones?

Honolulu (USA) uses HST at UTC-10:00, while NZDT uses NZDT at UTC+13:00. The IANA identifiers are Pacific/Honolulu and Pacific/Auckland.

Does daylight saving time affect the Honolulu–NZDT difference?

Neither zone observes daylight saving time, so the +23h offset between Honolulu and NZDT 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 NZDT?

Sometimes. The +23h gap is large enough that 8:00 PM or later in Honolulu already falls on the next day in NZDT.

What is the time difference between Honolulu and NZDT?

NZDT is +23h 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.