What is the time difference between EET and IRST?

Iran Standard Time (IRST) is 0 hours and 30 minutes ahead of Eastern European Time (EET). EET uses a UTC offset of UTC+3, while IRST uses UTC+3:30. For example, when it's 9:00 AM in EET, it's 9:30 AM in IRST. Note that this difference may shift by one hour during daylight saving time transitions if EET observes DST. Use the conversion table above to see the exact time for each hour of the day.

How do I convert EET to IRST?

To convert EET to IRST, add 0 hours and 30 minutes to the EET time. For example, 9:00 AM EET is 9:30 AM IRST, and 5:00 PM EET is 5:30 PM IRST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in IRST when it's noon in EET?

When it's 12:00 PM (noon) in EET, it's 12:30 PM in IRST. This is because IRST is 0 hours and 30 minutes ahead of EET. Similarly, when it's 6:00 PM in EET, it's 6:30 PM in IRST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is IRST from EET?

IRST is 0 hours and 30 minutes ahead of EET. This means when it's 9:00 AM in EET, it's 9:30 AM in IRST, and when it's midnight in EET, it's 12:30 AM in IRST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is IRST ahead or behind EET?

IRST is ahead of EET by 0 hours and 30 minutes. Clocks in IRST show a later time than EET, meaning the day starts earlier in IRST relative to EET. For example, when it's morning in EET, it's later in the morning in IRST. This gap may change by one hour during DST transitions.

Does EET observe daylight saving time?

Yes, Eastern European Time observes daylight saving time. During DST, the abbreviation changes to EEST and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard EET time. This means the UTC offset for EET shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your EET to IRST conversions.

Does IRST observe daylight saving time?

No, Iran Standard Time does not observe daylight saving time. The UTC offset of UTC+3:30 remains the same year-round, which simplifies time conversions. Regions using IRST keep their clocks unchanged regardless of the season.

What is the best time to call from EET to IRST?

The best time for a call between EET and IRST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in IRST during their work day, call between 8:30 AM and 4:30 PM your EET time. Avoid calling too early or late, as the 0 hours and 30 minutes difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in EET?

Daylight saving time transitions vary by year and region. Eastern European Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between EET and IRST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do EET and IRST ever have the same time?

No, EET and IRST never show the same time because their base UTC offsets are different. However, because EET observes daylight saving time and IRST does not, the time difference between them changes by one hour during DST transitions. This means the gap narrows or widens depending on the season, but the two clocks never align. Always verify the current offset around DST transition dates to avoid scheduling errors.

EET to IRST Converter

Convert Eastern European Time to Iran Standard Time. See the hour-by-hour conversion table below.

Timezone Details

Eastern European Time

10:31 PM

Thursday, April 2, 2026

EEST (UTC+03:00)

Tehran

11:01 PM

Thursday, April 2, 2026

Tehran (UTC+03:30)

Difference: +0h 30m

EEST DST: Yes (EEST)

24-Hour Overview

EEST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

Tehran — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

IRST to EET

Cities in These Timezones

EET Cities

Helsinki

IRST Cities

Tehran

More Tools

Compare EET & IRST Plan a Meeting (EET & IRST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Eastern European Time on Wikipedia IANA Time Zone Database