Online IST Time Now

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IST Time Now

IST time (UTC/GMT+05:30):


Country: India
Time zone abbreviation: IST
Time zone name: Indian Standard Time
Time offset: UTC/GMT+05:30
Observe DST: No

IST Time

IST (Indian Standard Time) is one of the well-known names of UTC+5:30 time zone which is 5:30h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +05:30.

Indian Standard time (IST) is the time zone observed throughout India, with a time offset of UTC+05:30. India does not observe daylight saving time or other seasonal adjustments. In military and aviation time IST is designated E* ("Echo-Star").

Indian Standard Time is calculated on the basis of 82.5°E longitude in the city of Mirzapur, Uttar Pradesh, which is situated approximately on the corresponding longitude reference line.

After Independence in 1947, the Union government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time) until 1948 and 1955, respectively. The Central observatory was moved from Chennai to a location at Shankargarh Fort in Prayagraj district, so that it would be as close to UTC+05:30 as possible.

Daylight Saving Time (DST) was used briefly during the China–India War of 1962 and the Indo-Pakistani Wars of 1965 and 1971.


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