Time Difference from Tehran to Major World Cities
Visual offset comparison between Tehran and key financial and international communication centers:
Drag the timeline scrubber to compare local hours across both locations:
Sunrise, Sunset and Solar Day Length in Tehran
Solar cycle and day length calculated for coordinates 35.6895ยฐ lat, 51.389ยฐ lon at an elevation of 1700 meters above sea level:
Iran Standard Time Timezone Specifications & DST Rules
About the IRST Abbreviation
IRST stands for Iran Standard Time. It is observed in Iran (Asia) at UTC +03:30.
Read full IRST time zone guide, meanings & active territories →
Travel, Infrastructure & Business Essentials for Tehran
Essential practical information for international business travelers, digital nomads, and expats visiting Tehran:
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Related Cities in the Same Region & Timezone
Major commercial and administrative hubs in neighboring territories sharing direct regional links with Tehran:
Historical Adoption & Legal Timekeeping Governance
Discover the current local time in Tehran, Iran, along with comprehensive timezone details, including its DST schedule, historical context, and time difference information. Tehran operates under the Asia/Tehran timezone, observing Iranian Standard Time (IRST) which is UTC+03:30. During Daylight Saving Time (DST), which is observed from the last Friday of March to the last Friday of September, the timezone shifts to Iranian Daylight Time (IRDT) at UTC+04:30. This unique system is governed by Iranian law and is crucial for coordinating activities across the country. Understanding Tehran's timezone is essential for international business, travel planning, and communication. The city's strategic location and economic importance make accurate timekeeping vital. This detailed guide provides all the information you need to stay synchronized with Tehran's time, including historical changes and practical considerations for scheduling meetings or events. The timezone has undergone changes over the years, reflecting political and economic shifts within Iran. This information is updated as of late 2023/early 2026 to ensure accuracy.
Historical Background: Officially adopted on 1932. Iran has a complex history of timezone changes, often linked to political events. DST rules have been modified several times.
Legal Time Authority:
Regulated by the Supreme Council of National Security
under official statutory decree Iranian Civil Code and related decrees.
Frequently Asked Questions about Tehran Time
What is the current local time and timezone in Tehran?
Tehran operates on Iran Standard Time (abbreviated as IRST). The standard offset is UTC +03:30.
What does IRST timezone stand for?
IRST stands for Iran Standard Time. It maintains a standard offset of UTC +03:30 from Coordinated Universal Time (GMT / UTC).
Does Tehran change clocks for Daylight Saving Time (DST)?
No, Tehran does not observe Daylight Saving Time. The local time remains constant throughout the entire year at UTC +03:30 without seasonal clock shifts.
What power plug and voltage adapter do I need for Tehran?
Iran uses plug types A and C and F with a standard voltage of 220V at 50Hz.
How can I convert time or schedule calls with Tehran?
You can use the interactive 24-hour dual-slider converter directly on this page, or visit our Time Difference Tool and Meeting Planner to schedule seamless cross-timezone calls.