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).

Tehran to Moscow

-0h 30m

Tehran

IRSTSOURCE

Iran · UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Moscow

MSK

Russia · UTC+03:00

HH11

MM30

11:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Tehran

Moscow

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 MSK on the World Map

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

IRST Zone

→

MSK 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

MSK – Moscow Standard Time

UTC+03:00

Moscow Standard Time (MSK) is the time zone for Moscow and western Russia, 3 hours ahead of UTC.

Countries in MSK

Russia (Moscow, St. Petersburg, western regions)

Major Cities in MSK

MoscowSt. PetersburgVolgogradNizhny NovgorodKazanSamaraRostov-on-Don

Key Facts about MSK

•All Russian train timetables use Moscow Time, regardless of location.
•Russia abolished daylight saving time in 2011.
•Moscow is the most populous city in Europe with over 12 million residents.
•MSK shares the offset with Saudi Arabia (AST) and East Africa (EAT).

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

Learn more about MSK on Wikipedia

About Tehran

Wikipedia

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

Population:9.4 million

Metro:16.8 million

Business Hours:8:00 AM - 4:00 PM IRST

Currency:IRR (﷼)

Stock Exchange:TSE (Tehran Stock Exchange)

Key Landmarks

Azadi TowerGolestan PalaceGrand BazaarMilad TowerTabiat Bridge

Did You Know?

Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).

Learn more about IRST timezone →

About Moscow

Wikipedia

Moscow operates on Moscow Standard Time (MSK), UTC+3. As Russia's capital and financial center, MSK is the reference timezone across Russia's 11 time zones.

Population:12.5 million

Metro:17.1 million

Business Hours:9:00 AM - 6:00 PM MSK

Currency:RUB (₽)

Stock Exchange:MOEX (Moscow Exchange)

Key Landmarks

Red SquareKremlinSt. Basil's CathedralBolshoi TheatreGUM Department Store

Did You Know?

Russia spans 11 time zones but Moscow Time (MSK) is the reference for all schedules.

Learn more about MSK timezone →

Understanding the -0h 30m Gap: Tehran vs Moscow

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

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

Tehran to Moscow time conversion table

Tehran (IRST)	Moscow (MSK)	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 Tehran to Moscow time

Scheduling a call from Tehran to Moscow: a 10:00 AM start in Tehran lands at 9:30 AM in Moscow, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Tehran and Moscow are inside the 9-to-5 working day between 9:30 AM and 5:00 PM IRST time (9:00 AM–4:30 PM MSK). That is roughly 7 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking Moscow local time against Tehran 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 Tehran and need Moscow 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 MSK (Moscow Standard Time)

Moscow Standard Time (MSK) is the time zone used in Moscow, St. Petersburg, and much of western Russia. Russia abolished DST in 2011, so MSK is observed year-round. MSK is also the reference time for Russian railways – all train schedules in Russia are given in Moscow Time regardless of the actual local time zone.

Best time to call between Tehran and Moscow

Both Tehran and Moscow 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 MSK. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

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

Tehran is 30 minutes behind Moscow (IRST UTC+03:30 → MSK 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 Tehran and Moscow?

Tehran (IRST, UTC+03:30) is 30 minutes behind Moscow (MSK, UTC+03:00). The gap is currently -0h 30m.

How do I convert Tehran time to Moscow time?

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

What time is it in Moscow right now?

Moscow uses MSK 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 Tehran.

What is the best time to call Moscow from Tehran?

Call between 9:30 AM and 5:00 PM IRST — that maps to 9:00 AM–4:30 PM MSK and keeps both parties inside the working day.

Which is behind, Tehran or Moscow?

Tehran is 30 minutes behind Moscow. When it is 12:00 PM in Tehran it is 11:30 AM in Moscow.

Do Tehran and Moscow use different time zones?

Tehran (Iran) uses IRST at UTC+03:30, while Moscow (Russia) uses MSK at UTC+03:00. The IANA identifiers are Asia/Tehran and Europe/Moscow.

Does daylight saving time affect the Tehran–Moscow difference?

Neither zone observes daylight saving time, so the -0h 30m offset between Tehran and Moscow is fixed all year.

Which other cities share Tehran's time zone?

IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.

Which countries use IRST, Tehran's zone?

IRST is used in Iran.

Is there a day difference between Tehran and Moscow?

Not normally. The -0h 30m gap only pushes the date over the previous day.

What is the time difference between Tehran and Moscow?

Moscow is -0h 30m from Tehran.

What timezone is Tehran in?

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

What timezone is Moscow in?

Moscow operates on Moscow Standard Time (MSK), UTC+3. As Russia's capital and financial center, MSK is the reference timezone across Russia's 11 time zones.

What are the business hours in Tehran?

Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.

What are the business hours in Moscow?

Standard business hours in Moscow are 9:00 AM - 6:00 PM MSK.

What is the best time to schedule a call between Tehran and Moscow?

The best overlap for a call is when both cities are in business hours. Tehran works 8:00 AM - 4:00 PM IRST and Moscow works 9:00 AM - 6:00 PM MSK (-0h 30m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Tehran and Moscow?

Tehran uses IRR (﷼) while Moscow uses RUB (₽). Check current exchange rates when planning travel or business between these cities.

How do Tehran and Moscow compare in size?

Tehran has a population of approximately 9.4 million (metro: 16.8 million), while Moscow has approximately 12.5 million (metro: 17.1 million).

What are the major landmarks in Tehran and Moscow?

Tehran is known for Azadi Tower, Golestan Palace, Grand Bazaar. Moscow is famous for Red Square, Kremlin, St. Basil's Cathedral.

Do Tehran and Moscow have stock exchanges?

Yes. Tehran has the TSE (Tehran Stock Exchange) and Moscow has the MOEX (Moscow Exchange). The -0h 30m time difference affects trading hour overlaps between these exchanges.