What is IT Time?
You need to keep in mind that IT Time zone is an identifier for a time offset that is 3:30 hours ahead of the
UTC time zone.
This time pattern is maintained using highly accurate atomic clocks matched to the Earth's rotation.
In this section, you will learn key facts about this time zone and stay well informed.
The IANA time zone identifier for IT Time is Asia/Tehran.
Please be aware that
Daylight Saving Time (DST) is not used in this time zone.
During the summer, clocks go forward one hour to the
UTC+4:30 offset and
IRDT Time is used.
The dates of DST transitions in Iran are based on the Solar Hijri calendar, the official calendar of Iran, which is in turn based on the March equinox as determined by astronomical calculation at the meridian for Iran Standard Time.
This results in the unusual situation wherein the dates of DST transitions don't fall on the same weekday each year as they do in most other countries.
About This Time Pattern
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Time Offset: UTC+3:30, UTC+03:30
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Abbreviation: IRST Time, Iran Standard Time, IT Time, Iran Time
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Standard Time Ends: On 1 Farvardin, which corresponds to either 20 or 21 March (clocks go forward one hour).
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Standard Time Began: On 30 Shahrivar, which corresponds to either 20 or 21 September (clocks went back one hour).
What is IT Time Zone?
This time zone is a time offset that adds 3:30 hours to
Coordinated Universal Time (UTC).
In the map above we highlight the entire region covered by this time zone.
Its main cities and territories are:
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Tehran
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Mashhad
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Isfahan
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Tabriz
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Karaj
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Shiraz
In the map above we highlight the entire region covered by the time zone.
This time offset is also observed during standard time and daylight saving time for various geographic regions.
You need to be very careful finding these time zones that may have different names and abbreviations, but have the same UTC offset:
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Iran Standard Time
-
Iran Time
-
IRST Time
IT Time Zone Countries
This time zone is used in the following country:
In Iran, this time zone is used throughout the country.
This time zone is defined by the 52.5 degrees east meridian, the same meridian which defines the Iranian calendar and is the official meridian of Iran.
Between 2005 and 2008, by decree of President Mahmoud Ahmadinejad, Iran did not observe daylight saving time.
It was reintroduced from 21 March 2008.
Current IT Time with seconds according to the official atomic clock.
