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).

NZDT to MDT

-19h

NZDT

NZDTSOURCE

UTC+13:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

MDT

UTC-06:00☀ DST active

HH05

MM00

(previous day)17:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

NZDT

MDT

12:00 AM

5:00 AM-1

2:00 AM

7:00 AM-1

4:00 AM

9:00 AM-1

6:00 AM

11:00 AM-1

8:00 AM

1:00 PM-1

10:00 AM

3:00 PM-1

12:00 PM

5:00 PM-1

2:00 PM

7:00 PM-1

4:00 PM

9:00 PM-1

6:00 PM

11:00 PM-1

8:00 PM

1:00 AM

10:00 PM

3:00 AM

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

NZDT and MDT on the World Map

The map below highlights the NZDT (New Zealand Daylight Time) and MDT (Mountain Daylight Time) timezone regions across the globe.

NZDT Zone

→

MDT Zone

Explore all world timezones interactively →

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

MDT – Mountain Daylight Time

UTC-06:00

Mountain Daylight Time (MDT) is the daylight saving offset in the Mountain Time Zone, 6 hours behind UTC.

Countries in MDT

United States (Mountain)Canada (Alberta)

Major Cities in MDT

DenverCalgaryEdmontonSalt Lake CityBoise

Key Facts about MDT

•MDT shares the same offset as CST (UTC-06:00).
•Arizona does not switch to MDT, remaining on MST.

Daylight Saving:Yes – switches to MST

Learn more about MDT on Wikipedia

Everything You Need to Know About NZDT and MDT Time

NZDT runs on New Zealand Daylight Time (NZDT) at UTC+13:00. MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. That puts NZDT 19 hours behind MDT — a difference of -19h at the current offsets.

In practice, when it is 9:00 AM in NZDT it is 2:00 PM in MDT on the previous day. Midnight in NZDT is 5:00 AM in MDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

NZDT to MDT time conversion table

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

Why people convert NZDT to MDT time

Scheduling a call from NZDT to MDT: a 10:00 AM start in NZDT lands at 3:00 PM in MDT the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -19h gap: NZDT and MDT 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 MDT is 2:00 PM in NZDT.
Booking travel or deliveries: tracking MDT local time against NZDT keeps pickup windows and arrival estimates honest across the -19h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM NZDT" is unambiguous; "3 PM" across a -19h gap is not.
With a -19h gap there is no shared 9-to-5 window, so alternate the early start: one week NZDT takes the early slot, the next week MDT does.

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.

About MDT (Mountain Daylight Time)

Mountain Daylight Time (MDT) is observed during summer months in the Mountain Time Zone, except in Arizona which stays on MST year-round. MDT aligns with Central Standard Time (CST) at UTC-06:00.

Best time to call between NZDT and MDT

With a -19h offset there is no overlap inside a normal 9 AM – 5 PM day. MDT opens at 9:00 AM MDT, which is 2:00 PM in NZDT, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

NZDT and MDT have no shared working hours because of the -19h gap. Teams need to alternate early starts or rely on asynchronous handovers.

NZDT is 19 hours behind MDT (NZDT UTC+13:00 → MDT UTC-06:00). 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

NZDT

☀ Currently in DST

Standard: UTC+12:00 · DST: UTC+13:00

Clocks fall back on Sat, Apr 3, 2027

MDT

☀ Currently in DST

Standard: UTC-07:00 · DST: UTC-06:00

Clocks fall back on Sun, Nov 1, 2026

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 NZDT and MDT?

NZDT (NZDT, UTC+13:00) is 19 hours behind MDT (MDT, UTC-06:00). The gap is currently -19h.

How do I convert NZDT time to MDT time?

Add -19h to NZDT local time. For example, 9:00 AM in NZDT is 2:00 PM in MDT (previous day).

What time is it in MDT right now?

MDT uses MDT at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -19h offset from NZDT.