Current Time in Tehran
Iran · IRST/IRDT · UTC+3:30 / UTC+4:30 (DST)
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Asia/Tehran
Timezone Details
| Timezone | IRST/IRDT |
| UTC Offset (standard) | UTC+3:30 |
| UTC Offset (summer/DST) | UTC+4:30 |
| Daylight Saving Time | Yes (observed) |
| IANA Timezone ID | Asia/Tehran |
| Country |  Iran |
| Population | 9.1 million |
Live Time Comparison
All times update every second
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| Tokyo (JST) | --:--:-- |
| Sydney (AEST) | --:--:-- |
| Beijing (CST) | --:--:-- |
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About Tehran Time Zone (IRST/IRDT)
Tehran, the capital of Iran, uses Iran Standard Time (IRST, UTC+3:30) in winter and Iran Daylight Time (IRDT, UTC+4:30) in summer. Iran's unique half-hour offset makes IRST one of the most distinctive timezones in the world.
Key fact: Tehran's UTC+3:30 offset is unique — it sits between the UTC+3 zone (Gulf states) and UTC+4 zone (UAE/Dubai).
Use the live clock at the top of this page to see the exact current time in Tehran with seconds. The clock updates every second and uses your browser's timezone database for accuracy.
✈ Flight Time to Tehran
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Tehran, Iran
Frequently Asked Questions — Tehran Time
What time is it in Tehran right now? +
The current time in Tehran, Iran is displayed by the live clock at the top of this page. Tehran is in the IRST/IRDT timezone (UTC+3:30 in winter, UTC+4:30 in summer).
What timezone is Tehran in? +
Tehran is in the IRST/IRDT timezone. The IANA timezone identifier is
Asia/Tehran. The UTC offset is +3:30 in winter and +4:30 in summer.Does Tehran observe Daylight Saving Time? +
Yes, Tehran observes Daylight Saving Time (DST). Clocks are set forward in spring and back in autumn. In winter, the UTC offset is +3:30; in summer it is +4:30.
What is the UTC offset for Tehran? +
Tehran's UTC offset is UTC+3:30 in winter and UTC+4:30 in summer. UTC offset means how many hours ahead of or behind Coordinated Universal Time (UTC) the local time is.
What is the time difference between Tehran and London? +
Tehran (IRST/IRDT) is UTC+3:30. London (GMT/BST) is UTC+0 in winter and UTC+1 in summer. Tehran's UTC+3:30 offset is unique — it sits between the UTC+3 zone (Gulf states) and UTC+4 zone (UAE/Dubai).
How do I convert Tehran time to UTC? +
To convert Tehran time to UTC, subtract UTC+3:30 from the local time. For example, if it is 15:00 in Tehran and the UTC offset is UTC+3:30, you calculate backward to find the UTC equivalent. Use the conversion table on this page for real-time values.
What continent is Tehran in? +
Tehran is located in Asia. It is the 9.1 million population city in Iran.
What is the IANA timezone name for Tehran? +
The IANA (Internet Assigned Numbers Authority) timezone database identifier for Tehran is
Asia/Tehran. This is the official timezone name used in programming languages and operating systems.
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