Question

briefly explain Indian Standard Time​

Answer 1

Answer:

On 1st September 1947 the Indian Standard Time (IST) was introduced as the official time for the whole country. The Indian Standard Time is observed throughout India, with a time offset of UTC+5:30. This means that India is five and a half hours ahead of Greenwich Mean Time

Explanation:

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Answer 2

Explanation:

To avoid all these difficulties, a system of standard time is observed by all countries.

Most countries adopt their standard time from the central meridian of their countries.

In larger countries such as Canada, U.S.A., China, and U.S.S.R, it would be inconvenient to have single time zone. So these countries have multiple time zones.