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).

TRT to MDT

-9h

TRT

TRTSOURCE

UTC+03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

MDT

UTC-06:00☀ DST active

HH03

MM00

03:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

TRT

MDT

12:00 AM

3:00 PM-1

2:00 AM

5:00 PM-1

4:00 AM

7:00 PM-1

6:00 AM

9:00 PM-1

8:00 AM

11:00 PM-1

10:00 AM

1:00 AM

12:00 PM

3:00 AM

2:00 PM

5:00 AM

4:00 PM

7:00 AM

6:00 PM

9:00 AM

8:00 PM

11:00 AM

10:00 PM

1:00 PM

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

TRT and MDT on the World Map

The map below highlights the TRT (Turkey Time) and MDT (Mountain Daylight Time) timezone regions across the globe.

TRT Zone

→

MDT Zone

Explore all world timezones interactively →

TRT – Turkey Time

UTC+03:00

Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.

Countries in TRT

Turkey

Major Cities in TRT

IstanbulAnkaraIzmirBursaAntalya

Key Facts about TRT

•Turkey has used a permanent UTC+03:00 since September 2016.
•TRT is level with Moscow Standard Time and Arabia Standard Time all year.
•Because Turkey kept summer time permanently, western cities see very late winter sunrises.
•Turkey previously observed daylight saving time from 1973 to 2016.

Daylight Saving:No – UTC+03:00 year-round

Learn more about TRT 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

Comparing Time Zones: TRT and MDT

TRT runs on Turkey Time (TRT) at UTC+03:00. MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. That puts TRT 9 hours behind MDT — a difference of -9h at the current offsets.

In practice, when it is 9:00 AM in TRT it is 12:00 AM in MDT. Midnight in TRT is 3:00 PM in MDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

TRT to MDT time conversion table

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

Why people convert TRT to MDT time

Scheduling a call from TRT to MDT: a 10:00 AM start in TRT lands at 1:00 AM in MDT, so you can confirm the slot without doing the arithmetic yourself.
Handling a -9h gap: TRT 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 12:00 AM in TRT.
Watching a live event or market open: TRT viewers need 12:00 AM in MDT to catch a 9:00 AM start there, and 9:00 AM if the event is anchored to TRT.

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

About TRT (Turkey Time)

Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.

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 TRT and MDT

With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. MDT opens at 9:00 AM MDT, which is 12:00 AM in TRT, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

TRT and MDT have no shared working hours because of the -9h gap. Teams need to alternate early starts or rely on asynchronous handovers.

TRT is 9 hours behind MDT (TRT UTC+03:00 → 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.