History
After independence in 1947, the Indian government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Bombay Time) until 1955. The Central observatory was moved from Chennai to a location near Mirzapur, so that it would be as close to UTC +5:30 as possible.
Daylight Saving Time (DST) was used briefly during the Sino–Indian War of 1962 and the Indo–Pakistani Wars of 1965 and 1971.
Read more about this topic: Indian Standard Time
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“Philosophy of science without history of science is empty; history of science without philosophy of science is blind.”
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“At present cats have more purchasing power and influence than the poor of this planet. Accidents of geography and colonial history should no longer determine who gets the fish.”
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