Current Time in Iran Time Zone
IANA Name: Iran
Standard Offset: UTC +3:30
Daylight Saving: No
Currently Observing DST: No ❌
Asia/Tehran: The Time Zone of Iran
Asia/Tehran is the IANA time zone identifier for Iran, covering the entire country. It uses a standard offset of UTC+03:30 and does not observe daylight saving time, making it one of the few zones with a half-hour offset that remains constant year-round.
Overview and Applicability
Asia/Tehran applies to all of Iran, including major cities such as Tehran, Mashhad, Isfahan, Karaj, Shiraz, and Tabriz. It is the sole time zone for the country, meaning every location in Iran shares the same local time. The zone is also used by Iranian territories and offshore installations, though no other country uses this offset year-round without DST.
Offset and Abbreviation
The standard offset is UTC+03:30, meaning local time is three hours and thirty minutes ahead of Coordinated Universal Time. The common abbreviation for this offset is IRST (Iran Standard Time). Unlike many zones that shift to a different abbreviation during summer (e.g., IRDT for Iran Daylight Time), IRST is used all year because Iran no longer observes DST. The half-hour offset places Iran uniquely between the UTC+03:00 zones (e.g., Moscow, East Africa) and UTC+04:00 zones (e.g., Dubai, Samara).
Daylight Saving Time: None
Iran previously observed daylight saving time, moving clocks forward by one hour in spring and back in autumn. However, the country abolished DST in September 2022, and since then, Asia/Tehran has remained at a constant UTC+03:30. This means no clock changes occur during the year, simplifying scheduling for residents and businesses. The decision was made to reduce energy consumption and avoid the disruptions of biannual changes.
Main Countries and Cities
The only country using Asia/Tehran is Iran. Key cities include:
- Tehran (capital, population ~9 million)
- Mashhad (second-largest city, religious center)
- Isfahan (historic city, major tourism hub)
- Karaj (industrial city near Tehran)
- Shiraz (cultural capital, near Persepolis)
- Tabriz (major city in northwest Iran)
Practical Guidance for Business and Calls
When scheduling calls or meetings with Iran, consider the offset relative to common time zones:
- UTC+00:00 (London): Iran is 3.5 hours ahead. When it is 9:00 AM in London, it is 12:30 PM in Tehran.
- UTC-05:00 (New York): Iran is 8.5 hours ahead during Eastern Standard Time (EST). 9:00 AM in New York is 5:30 PM in Tehran.
- UTC+08:00 (Beijing): Iran is 4.5 hours behind. 9:00 AM in Beijing is 4:30 AM in Tehran.
- UTC+04:00 (Dubai): Iran is 30 minutes behind. 9:00 AM in Dubai is 8:30 AM in Tehran.
Historical Note
Iran previously used UTC+03:30 with DST (UTC+04:30 in summer), but the abolition of DST in 2022 made the offset constant. The IANA zone Asia/Tehran reflects this change, and older software may still list DST rules that are no longer applicable.
Frequently Asked Questions
Does Iran observe daylight saving time?
No, Iran abolished daylight saving time in September 2022. The country now uses a constant offset of UTC+03:30 all year.
What is the time difference between Iran and Dubai?
Iran is 30 minutes behind Dubai. Dubai uses UTC+04:00 year-round, while Iran uses UTC+03:30.
What is the IANA time zone identifier for Iran?
Asia/Tehran is the IANA identifier for Iran. It covers the entire country.
Why does Iran use a half-hour offset?
Iran's offset of UTC+03:30 is a historical choice that aligns with the country's geographic longitude, placing noon roughly at the solar zenith. Many countries in the region use half-hour offsets for similar reasons.
How do I convert Iran time to my local time?
Determine your UTC offset and add or subtract accordingly. For example, if you are in New York (UTC-05:00), Iran is 8.5 hours ahead. Use online converters or set your device to Asia/Tehran for accurate conversions.
Are there any other countries in the Asia/Tehran time zone?
No, Asia/Tehran is exclusive to Iran. No other country uses UTC+03:30 without DST.