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.

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).

MDT to UTC

Q: What is UTC?

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

+6h

MDT

MDTSOURCE

UTC-06:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

UTC

UTC+00:00

HH06

MM00

18:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

MDT

UTC

12:00 AM

6:00 AM

2:00 AM

8:00 AM

4:00 AM

10:00 AM

6:00 AM

12:00 PM

8:00 AM

2:00 PM

10:00 AM

4:00 PM

12:00 PM

6:00 PM

2:00 PM

8:00 PM

4:00 PM

10:00 PM

6:00 PM

12:00 AM+1

8:00 PM

2:00 AM+1

10:00 PM

4:00 AM+1

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

MDT and UTC on the World Map

The map below highlights the MDT (Mountain Daylight Time) and UTC (Coordinated Universal Time) timezone regions across the globe.

MDT Zone

→

UTC Zone

Explore all world timezones interactively →

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

UTC – Coordinated Universal Time

UTC+00:00

Coordinated Universal Time (UTC) is the world's primary time standard, used as the basis for civil time worldwide.

Countries in UTC

Used worldwide as referenceSame zone as: UK, Ireland, Iceland, Portugal, Ghana

Major Cities in UTC

LondonDublinReykjavikAccraLisbonDakar

Key Facts about UTC

•UTC is the basis for all civil time zones worldwide.
•The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
•UTC is based on atomic clocks and is accurate to within a nanosecond per day.
•Servers and databases worldwide store timestamps in UTC to avoid timezone confusion.
•Leap seconds are occasionally added to UTC to keep it aligned with Earth's rotation.

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

Learn more about UTC on Wikipedia

MDT to UTC Time Difference – Complete Guide

MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. UTC runs on Coordinated Universal Time (UTC) at UTC+00:00. That puts MDT 6 hours ahead of UTC — a difference of +6h at the current offsets.

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

MDT to UTC time conversion table

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

Why people convert MDT to UTC time

Scheduling a call from MDT to UTC: a 10:00 AM start in MDT lands at 4:00 PM in UTC, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both MDT and UTC are inside the 9-to-5 working day between 9:00 AM and 11:00 AM MDT time (3:00 PM–5:00 PM UTC). That is roughly 2 hours of usable overlap.
Booking travel or deliveries: tracking UTC local time against MDT keeps pickup windows and arrival estimates honest across the +6h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM MDT" is unambiguous; "3 PM" across a +6h gap is not.
Block 9:00 AM–11:00 AM MDT as the recurring meeting window if you work primarily from MDT and need UTC colleagues present.

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.

About UTC (Coordinated Universal Time)

Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is effectively the successor to GMT and is based on International Atomic Time with leap seconds added to keep it synchronized with Earth's rotation. UTC is used in aviation, computing, navigation, weather forecasting, and the International Space Station. Most programming languages and databases store timestamps in UTC.

Best time to call between MDT and UTC

Both MDT and UTC sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM MDT, which is 3:00 PM–5:00 PM UTC. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

MDT and UTC overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.

MDT is 6 hours ahead of UTC (MDT UTC-06:00 → UTC UTC+00:00). The shared working window is 9:00 AM–11:00 AM MDT. Remember to re-check around daylight-saving transitions.