Question

What is meant by indian standard time and why we need a standard meridian in India
Explain

Answer 1

Ello user !!!!!!!!!!

Here is your answer,

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The standard meridian of India is the 82.5º east longitude which passes through Allahabad.

This is five and a half hours ahead of 0º meridian (Greenwich).

India is a very big country. In order to maintain the uniformity of time within the country the Standard Meridian of India is taken as 82 ½ ° E longitude.

I.S.T is 5:30 hours ahead of G.M.T (Greenwich Mean Time) located in London.

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Answer 2

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Greenwich Mean Time (GMT) is the time measured on the Earth's zero degree line of longitude, or meridian.

This runs from the North Pole to the South Pole, passing through the Old Royal Observatory in the London suburb of Greenwich.

This line has been called the Greenwich Meridian since 1884, and it is from here that all terrestrial longitudes are measured and the world's time zones are calculated.

Generally, if you are in a country east of the Greenwich Meridian, your local time is ahead of GMT (e.g. local time in China is GMT +8 hours).