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.

HST to NZST

+22h

HST

HSTSOURCE

UTC-10:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

NZST

UTC+13:00☀ DST active

HH10

MM00

(next day)10:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

HST

NZST

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 NZST on the World Map

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

HST Zone

→

NZST 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

NZST – New Zealand Standard Time

UTC+12:00

New Zealand Standard Time (NZST) is the time zone for New Zealand, 12 hours ahead of UTC.

Countries in NZST

New Zealand

Major Cities in NZST

AucklandWellingtonChristchurchHamiltonDunedin

Key Facts about NZST

•New Zealand is among the first major countries to see a new day.
•NZST is 17 hours ahead of EST.
•New Zealand observes DST from September to April (Southern Hemisphere summer).

Daylight Saving:Yes – switches to NZDT

Learn more about NZST on Wikipedia

Understanding the +22h Gap: HST vs NZST

HST runs on Hawaii Standard Time (HST) at UTC-10:00. NZST runs on New Zealand Standard Time (NZST) at UTC+12:00. That puts HST 22 hours ahead of NZST — a difference of +22h at the current offsets.

In practice, when it is 9:00 AM in HST it is 7:00 AM in NZST on the next day. Midnight in HST is 10:00 PM in NZST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

HST to NZST time conversion table

HST (HST)	NZST (NZST)	Day
12:00 AM	10:00 PM	same day
6:00 AM	4:00 AM	next day
7:00 AM	5:00 AM	next day
8:00 AM	6:00 AM	next day
9:00 AM	7:00 AM	next day
12:00 PM	10:00 AM	next day
3:00 PM	1:00 PM	next day
5:00 PM	3:00 PM	next day
6:00 PM	4:00 PM	next day
9:00 PM	7:00 PM	next day

Why people convert HST to NZST time

Scheduling a call from HST to NZST: a 10:00 AM start in HST lands at 8:00 AM in NZST the next day, so you can confirm the slot without doing the arithmetic yourself.
Handling a +22h gap: HST and NZST 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 NZST is 7:00 AM in HST.
Booking travel or deliveries: tracking NZST local time against HST keeps pickup windows and arrival estimates honest across the +22h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +22h gap is not.
With a +22h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week NZST 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 NZST (New Zealand Standard Time)

New Zealand Standard Time (NZST) is the standard time zone for New Zealand and its dependencies. New Zealand is among the first countries to see a new calendar day. During summer (September to April), clocks advance to New Zealand Daylight Time (NZDT, UTC+13:00).

Best time to call between HST and NZST

With a +22h offset there is no overlap inside a normal 9 AM – 5 PM day. NZST opens at 9:00 AM NZST, which is 7:00 AM in HST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

HST and NZST have no shared working hours because of the +22h gap. Teams need to alternate early starts or rely on asynchronous handovers.

HST is 22 hours ahead of NZST (HST UTC-10:00 → NZST UTC+12:00). 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

HST

Does not observe DST

NZST

☀ 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 HST and NZST?

HST (HST, UTC-10:00) is 22 hours ahead of NZST (NZST, UTC+12:00). The gap is currently +22h.

How do I convert HST time to NZST time?

Add +22h to HST local time. For example, 9:00 AM in HST is 7:00 AM in NZST (next day).

What time is it in NZST right now?

NZST uses NZST at UTC+12:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +22h offset from HST.