Tehran to IST
+2hTehran
IRSTSOURCEIST
ISTGreen rows indicate typical business hours (9 AM - 5 PM)
IRST and IST on the World Map
The map below highlights the IRST (Iran Standard Time) and IST (India Standard Time) timezone regions across the globe.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
Understanding the Time Gap: Tehran vs IST
Tehran, Iran operates on the Iran Standard Time (UTC+03:30). IST (India Standard Time) uses India Standard Time (UTC+05:30).
The time difference between Tehran and IST is 120 minutes (+2h). When it's noon in Tehran, it's 02:00 PM in IST.
Why Convert Tehran to IST Time?
Coordinating across the 2-hour time difference between Tehran and IST doesn't have to be complicated. This converter provides a clear and accurate way to translate time from Tehran to IST, making it easier to manage international relationships and business dealings.
Pro Tip: If you frequently communicate with people in IST from Tehran, consider adding a dual-clock widget to your phone or computer to keep track of the 2-hour difference at a glance.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
Best Time to Call Between Tehran and IST
If you want to reach someone in IST during standard business hours (9 AM – 5 PM IST), the best time to call from Tehran would be:
- IST 9:00 AM = Tehran 07:00 AM
- IST 12:00 PM = Tehran 10:00 AM
- IST 5:00 PM = Tehran 03:00 PM
Business Hours Overlap
Tehran and IST have a significant business hours overlap (6 hours), making real-time collaboration easy during standard working hours.
In conclusion, the +2h time shift from Tehran to IST doesn't have to be a hurdle. With our interactive converter, you can easily find the perfect time to connect.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Tehran and IST?
IST is +2h from Tehran.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What timezone is IST in?
IST operates on its local timezone.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
Which countries use IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting facts about IRST?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
Which cities are in the IST timezone?
Major cities in the IST timezone include Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad.
What is the UTC offset for IST?
India Standard Time (IST) is at UTC+05:30.
What should I know about the IST timezone?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
When is it midnight in Tehran, what time is it in IST?
When it is 12:00 AM (midnight) in Tehran (IRST), it is +2h later in IST (IST).
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