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).

Iran to Turkey

-0h 30m

Iran

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Turkey

TRT

UTC+03:00

HH11

MM30

11:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Iran

Turkey

12:00 AM

11:30 PM-1

2:00 AM

1:30 AM

4:00 AM

3:30 AM

6:00 AM

5:30 AM

8:00 AM

7:30 AM

10:00 AM

9:30 AM

12:00 PM

11:30 AM

2:00 PM

1:30 PM

4:00 PM

3:30 PM

6:00 PM

5:30 PM

8:00 PM

7:30 PM

10:00 PM

9:30 PM

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

IRST and TRT on the World Map

The map below highlights the IRST (Iran Standard Time) and TRT (Turkey Time) timezone regions across the globe.

IRST Zone

→

TRT Zone

Explore all world timezones interactively →

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST on Wikipedia

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

Understanding the -0h 30m Gap: Iran vs Turkey

Iran runs on Iran Standard Time (IRST) at UTC+03:30. Turkey runs on Türkiye Standard Time (TRT) at UTC+03:00. That puts Iran 30 minutes behind Turkey — a difference of -0h 30m at the current offsets.

In practice, when it is 9:00 AM in Iran it is 8:30 AM in Turkey. Midnight in Iran is 11:30 PM in Turkey. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Iran to Turkey time conversion table

Iran (IRST)	Turkey (TRT)	Day
12:00 AM	11:30 PM	previous day
6:00 AM	5:30 AM	same day
7:00 AM	6:30 AM	same day
8:00 AM	7:30 AM	same day
9:00 AM	8:30 AM	same day
12:00 PM	11:30 AM	same day
3:00 PM	2:30 PM	same day
5:00 PM	4:30 PM	same day
6:00 PM	5:30 PM	same day
9:00 PM	8:30 PM	same day

Why people convert Iran to Turkey time

Scheduling a call from Iran to Turkey: a 10:00 AM start in Iran lands at 9:30 AM in Turkey, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Iran and Turkey are inside the 9-to-5 working day between 9:30 AM and 5:00 PM IRST time (9:00 AM–4:30 PM TRT). That is roughly 7 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking Turkey local time against Iran keeps pickup windows and arrival estimates honest across the -0h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a -0h 30m gap is not.
Block 9:30 AM–5:00 PM IRST as the recurring meeting window if you work primarily from Iran and need Turkey colleagues present.

About IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

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.

Best time to call between Iran and Turkey

Both Iran and Turkey sit inside the 9 AM – 5 PM working day between 9:30 AM–5:00 PM IRST, which is 9:00 AM–4:30 PM TRT. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Iran and Turkey share 7 hours of working-hours overlap (9:30 AM–5:00 PM IRST), so scheduling a live meeting is straightforward.

Iran is 30 minutes behind Turkey (IRST UTC+03:30 → TRT UTC+03:00). The shared working window is 9:30 AM–5:00 PM IRST. Remember to re-check around daylight-saving transitions.

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 Iran and Turkey?

Iran (IRST, UTC+03:30) is 30 minutes behind Turkey (TRT, UTC+03:00). The gap is currently -0h 30m.

How do I convert Iran time to Turkey time?

Add -0h 30m to Iran local time. For example, 9:00 AM in Iran is 8:30 AM in Turkey.

What time is it in Turkey right now?

Turkey uses TRT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -0h 30m offset from Iran.