Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Moscow to IRST

+0h 30m

Moscow

MSKSOURCE

Russia · UTC+03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

IRST

UTC+03:30

HH12

MM30

12:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Moscow

IRST

12:00 AM

12:30 AM

2:00 AM

2:30 AM

4:00 AM

4:30 AM

6:00 AM

6:30 AM

8:00 AM

8:30 AM

10:00 AM

10:30 AM

12:00 PM

12:30 PM

2:00 PM

2:30 PM

4:00 PM

4:30 PM

6:00 PM

6:30 PM

8:00 PM

8:30 PM

10:00 PM

10:30 PM

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

MSK and IRST on the World Map

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

MSK Zone

→

IRST Zone

Explore all world timezones interactively →

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

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

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: Moscow vs IRST

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

In practice, when it is 9:00 AM in Moscow it is 9:30 AM in IRST. Midnight in Moscow is 12:30 AM in IRST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Moscow to IRST time conversion table

Moscow (MSK)	IRST (IRST)	Day
12:00 AM	12:30 AM	same day
6:00 AM	6:30 AM	same day
7:00 AM	7:30 AM	same day
8:00 AM	8:30 AM	same day
9:00 AM	9:30 AM	same day
12:00 PM	12:30 PM	same day
3:00 PM	3:30 PM	same day
5:00 PM	5:30 PM	same day
6:00 PM	6:30 PM	same day
9:00 PM	9:30 PM	same day

Why people convert Moscow to IRST time

Scheduling a call from Moscow to IRST: a 10:00 AM start in Moscow lands at 10:30 AM in IRST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Moscow and IRST are inside the 9-to-5 working day between 9:00 AM and 4:30 PM MSK time (9:30 AM–5:00 PM IRST). That is roughly 7 hours 30 minutes of usable overlap.
Watching a live event or market open: Moscow viewers need 9:30 AM in IRST to catch a 9:00 AM start there, and 11:30 PM if the event is anchored to Moscow.

Always state the zone abbreviation, not just the hour. "3:00 PM MSK" is unambiguous; "3 PM" across a +0h 30m gap is not.
Block 9:00 AM–4:30 PM MSK as the recurring meeting window if you work primarily from Moscow and need IRST colleagues present.

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.

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.

Best time to call between Moscow and IRST

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

Business hours overlap

Moscow and IRST share 7 hours of working-hours overlap (9:00 AM–4:30 PM MSK), so scheduling a live meeting is straightforward.

Moscow is 30 minutes ahead of IRST (MSK UTC+03:00 → IRST UTC+03:30). The shared working window is 9:00 AM–4:30 PM MSK. 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 Moscow and IRST?

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

How do I convert Moscow time to IRST time?

Add +0h 30m to Moscow local time. For example, 9:00 AM in Moscow is 9:30 AM in IRST.

What time is it in IRST right now?

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

What is the best time to call IRST from Moscow?

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

Which is ahead, Moscow or IRST?

Moscow is 30 minutes ahead of IRST. When it is 12:00 PM in Moscow it is 12:30 PM in IRST.

Do Moscow and IRST use different time zones?

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

Does daylight saving time affect the Moscow–IRST difference?

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

Which other cities share Moscow's time zone?

MSK also covers Moscow, St. Petersburg, Volgograd, Nizhny Novgorod, Kazan, Samara, Rostov-on-Don.

Which countries use MSK, Moscow's zone?

MSK is used in Russia (Moscow, St. Petersburg, western regions).

Is there a day difference between Moscow and IRST?

Not normally. The +0h 30m gap only pushes the date over for late-evening times.

What is the time difference between Moscow and IRST?

IRST is +0h 30m from Moscow.

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.