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.

NST to HST

-6h 30m

NST

NSTSOURCE

UTC-02:30☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

HST

UTC-10:00

HH05

MM30

05:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

NST

HST

12:00 AM

4:30 PM-1

2:00 AM

6:30 PM-1

4:00 AM

8:30 PM-1

6:00 AM

10:30 PM-1

8:00 AM

12:30 AM

10:00 AM

2:30 AM

12:00 PM

4:30 AM

2:00 PM

6:30 AM

4:00 PM

8:30 AM

6:00 PM

10:30 AM

8:00 PM

12:30 PM

10:00 PM

2:30 PM

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

NST and HST on the World Map

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

NST Zone

→

HST Zone

Explore all world timezones interactively →

NST – Newfoundland Standard Time

UTC-03:30

Newfoundland Standard Time (NST) is a unique half-hour offset time zone in Canada, 3.5 hours behind UTC.

Countries in NST

Canada (Newfoundland)

Major Cities in NST

St. John'sCorner BrookMount Pearl

Key Facts about NST

•NST is one of only a few half-hour offset time zones in the world.
•Newfoundland joined Canada in 1949 and kept its unique time zone.
•St. John's is the easternmost city in North America.

Daylight Saving:Yes – switches to NDT

Learn more about NST 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

NST vs HST: Offsets, DST and Best Call Times

NST runs on Newfoundland Standard Time (NST) at UTC-03:30. HST runs on Hawaii Standard Time (HST) at UTC-10:00. That puts NST 6 hours 30 minutes behind HST — a difference of -6h 30m at the current offsets.

In practice, when it is 9:00 AM in NST it is 2:30 AM in HST. Midnight in NST is 5:30 PM in HST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

NST to HST time conversion table

NST (NST)	HST (HST)	Day
12:00 AM	5:30 PM	previous day
6:00 AM	11:30 PM	previous day
7:00 AM	12:30 AM	same day
8:00 AM	1:30 AM	same day
9:00 AM	2:30 AM	same day
12:00 PM	5:30 AM	same day
3:00 PM	8:30 AM	same day
5:00 PM	10:30 AM	same day
6:00 PM	11:30 AM	same day
9:00 PM	2:30 PM	same day

Why people convert NST to HST time

Scheduling a call from NST to HST: a 10:00 AM start in NST lands at 3:30 AM in HST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both NST and HST are inside the 9-to-5 working day between 3:30 PM and 5:00 PM NST time (9:00 AM–10:30 AM HST). That is roughly 1 hours 30 minutes of usable overlap.
Coordinating a NST-based team with HST 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 NST" is unambiguous; "3 PM" across a -6h 30m gap is not.
Block 3:30 PM–5:00 PM NST as the recurring meeting window if you work primarily from NST and need HST colleagues present.

About NST (Newfoundland Standard Time)

Newfoundland Standard Time (NST) is one of the few half-hour offset time zones in the world. It covers the island of Newfoundland in Canada and is 30 minutes ahead of Atlantic Standard Time. This unique offset exists because Newfoundland was an independent country until 1949.

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 NST and HST

Both NST and HST sit inside the 9 AM – 5 PM working day between 3:30 PM–5:00 PM NST, which is 9:00 AM–10:30 AM HST. That gives roughly 1 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

NST and HST overlap for only 90 minutes (3:30 PM–5:00 PM NST), so meetings have to be booked precisely.

NST is 6 hours 30 minutes behind HST (NST UTC-03:30 → HST UTC-10:00). The shared working window is 3:30 PM–5:00 PM NST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

NST

☀ Currently in DST

Standard: UTC-03:30 · DST: UTC-02:30

Clocks fall back on Sun, Nov 1, 2026

HST

Does not observe DST

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 NST and HST?

NST (NST, UTC-03:30) is 6 hours 30 minutes behind HST (HST, UTC-10:00). The gap is currently -6h 30m.

How do I convert NST time to HST time?

Add -6h 30m to NST local time. For example, 9:00 AM in NST is 2:30 AM in HST.

What time is it in HST right now?

HST 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 -6h 30m offset from NST.