Asia · Southern Asia · Sovereign state
Current time in Iran
A single time zone at UTC+03:30.
Sunday, May 31, 2026
About Iran's time
A single time zone.
Iran operates on a single timezone, IRST (Iran Standard Time), which is UTC+03:30. This half-hour offset is relatively uncommon globally, shared by only a few countries like India and Myanmar.
Major cities
Cities of Iran.
History
How Iran keeps time.
Iran adopted its current standard time, IRST (Iran Standard Time) at UTC+03:30, in 1946. Prior to this, the country used local mean time based on the Tehran meridian. The decision to adopt a unified standard time was part of modernization efforts during the reign of Mohammad Reza Pahlavi. There have been discussions about shifting to UTC+04:00 to better align with neighboring countries and improve economic and social coordination, but as of now, the offset remains UTC+03:30.
Did you know?
Things about Iran's time.
Iran's use of the half-hour offset means it is in a category of countries like India (UTC+05:30) and Myanmar (UTC+06:30). This can lead to unique scheduling and communication challenges with countries using full-hour offsets. The country does not observe daylight saving time, which means the time difference remains consistent throughout the year, simplifying international coordination but also missing potential energy savings.
Frequently asked questions
Common questions about Iran's time zone, daylight saving rules, and how to handle it in software. Can't find what you need? Email [email protected].
- Does Iran observe Daylight Saving Time?
- No, Iran does not observe Daylight Saving Time. The country uses IRST (Iran Standard Time) at UTC+03:30 year-round.
- What is the time difference between Iran and India?
- The time difference between Iran and India is 1 hour. India is ahead of Iran by 1 hour, as it uses UTC+05:30, compared to Iran's UTC+03:30.
- Why does Iran use a half-hour time zone?
- The use of a half-hour time zone in Iran, like in India and Myanmar, is a result of historical decisions during periods of modernization and standardization. It aligns the country's time as closely as possible with the solar time of its geographical location.
- How does Iran's time zone affect international business?
- Iran's single time zone with a half-hour offset can create scheduling complexities in international business, especially when coordinating with partners in countries using full-hour offsets. Planning for the half-hour difference is essential for effective communication.
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