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.

IRST to Athens

-0h 30m

IRST

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Athens

EEST

Greece · UTC+03:00☀ DST active

HH11

MM30

11:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

IRST

Athens

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 EEST on the World Map

The map below highlights the IRST (Iran Standard Time) and EEST (Eastern European Time) timezone regions across the globe.

IRST Zone

→

EEST 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

EET – Eastern European Time

UTC+02:00

Eastern European Time (EET) is used in Eastern Europe, the Middle East, and northeastern Africa, 2 hours ahead of UTC.

Countries in EET

FinlandGreeceRomaniaBulgariaUkraineEgyptIsraelLebanonJordanLithuaniaLatviaEstoniaMoldovaLibyaSyriaPalestineCyprus

Major Cities in EET

CairoAthensHelsinkiBucharestKyivSofiaJerusalemTel AvivBeirutVilniusRigaTallinn

Key Facts about EET

•EET covers countries across three continents: Europe, Asia, and Africa.
•Cairo is the most populous city in the EET zone.
•Turkey used to be on EET but permanently moved to UTC+03:00 in 2016.
•Finland, the Baltic states, and Greece all use EET.

Daylight Saving:Yes – switches to EEST

Learn more about EET on Wikipedia

About Athens

Wikipedia

Athens operates on Eastern European Time (EET/EEST), UTC+2. As a gateway between Europe and the Middle East, Athens time bridges Western and Eastern markets.

Population:664,000

Metro:3.8 million

Business Hours:9:00 AM - 5:00 PM EET

Currency:EUR (€)

Stock Exchange:ATHEX (Athens Stock Exchange)

Key Landmarks

AcropolisParthenonAncient AgoraPlakaNational Archaeological Museum

Did You Know?

The Acropolis has been standing for nearly 2,500 years.

Learn more about EEST timezone →

IRST to Athens Time Difference – Complete Guide

IRST runs on Iran Standard Time (IRST) at UTC+03:30. Athens runs on Eastern European Summer Time (EEST) at UTC+03:00, also currently on daylight saving time. That puts IRST 30 minutes behind Athens — a difference of -0h 30m at the current offsets.

In practice, when it is 9:00 AM in IRST it is 8:30 AM in Athens. Midnight in IRST is 11:30 PM in Athens.Athens observes daylight saving time while IRST does not, so the gap narrows or widens by an hour part of the year.

IRST to Athens time conversion table

IRST (IRST)	Athens (EEST)	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 IRST to Athens time

Scheduling a call from IRST to Athens: a 10:00 AM start in IRST lands at 9:30 AM in Athens, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both IRST and Athens are inside the 9-to-5 working day between 9:30 AM and 5:00 PM IRST time (9:00 AM–4:30 PM EEST). That is roughly 7 hours 30 minutes of usable overlap.
Coordinating a IRST-based team with Athens contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

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 IRST and need Athens colleagues present.
Athens: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.

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 EET (Eastern European Time)

Eastern European Time (EET) covers a wide geographical area including Eastern Europe (Finland, Greece, Romania, Bulgaria, Ukraine), the Middle East (Israel, Lebanon, Jordan), and northeastern Africa (Egypt, Libya). During summer, most EET countries switch to Eastern European Summer Time (EEST, UTC+03:00). Turkey permanently moved to UTC+03:00 in 2016, effectively leaving EET.

Best time to call between IRST and Athens

Both IRST and Athens 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 EEST. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

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

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

🕐 Daylight Saving Time Info

IRST

Does not observe DST

Athens

☀ Currently in DST

Standard: UTC+02:00 · DST: UTC+03:00

Clocks fall back on Sun, Oct 25, 2026

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 IRST and Athens?

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

How do I convert IRST time to Athens time?

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

What time is it in Athens right now?

Athens uses EEST 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 IRST.

What is the best time to call Athens from IRST?

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

Which is behind, IRST or Athens?

IRST is 30 minutes behind Athens. When it is 12:00 PM in IRST it is 11:30 AM in Athens.

Do IRST and Athens use different time zones?

IRST uses IRST at UTC+03:30, while Athens (Greece) uses EEST at UTC+03:00. The IANA identifiers are Asia/Tehran and Europe/Athens.

Does daylight saving time affect the IRST–Athens difference?

Yes at the moment: Athens is on daylight saving time and IRST is not, so the -0h 30m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share IRST's time zone?

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

Which countries use IRST, IRST's zone?

IRST is used in Iran.

Is there a day difference between IRST and Athens?

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

What is the time difference between IRST and Athens?

Athens is -0h 30m from IRST.

What timezone is IRST in?

IRST operates on its local timezone.

What timezone is Athens in?

Athens operates on Eastern European Time (EET/EEST), UTC+2. As a gateway between Europe and the Middle East, Athens time bridges Western and Eastern markets.