Question

What Is Indian Standard Time and what is its importance?

Answer 1

Hint: Indian Standard Time is the uniform time calculated uniformly all over India. It is called IST. This time is calculated by the Standard Meridian of India. Indian Standard time was established after the Indian Independence. But it is said that Kolkata and Mumbai retained their own local time until \[1942\] and \[1955\] respectively.

Complete answer:
There are two-time zone GMT and IST. GMT is abbreviated as Greenwich Mean Time and IST as Indian Standard Time. GMT is used comparably with Universal Time Coordinate (UTC).
Times on different meridians are bound to be different. In India, meridian lines are spread \[68.7\]degrees east to \[97.25\] degrees east. Based on this \[29\]meridians are go to the way of India. We can’t have \[29\] standard time. Therefore in the middle place, the Indian Meridian line is selected. In order to maintain uniformity in time, Indian Standard Time is calculated on the proof of meridian \[82.5\] degrees. It passes through the west of the town of Mirzapur near the city of Allahabad in the state of Uttar Pradesh. The local time here is considered to be Indian Standard Time.
Indian Standard Time is typically \[5.30\]hours ahead of the Coordinated Universal Time (UTC). The IST becomes insufficient to cover the whole geographical expanse of India. The reason is that the east-west distance covers about \[2933\] kilometers and \[29\] degrees of longitude. This results in the sun rising and setting about almost two hours earlier in the eastern borders of India than the western borders. There has been a proposal to divide the country into different time zones which have been taken into consideration lately by the government of India.
Importance of IST:
India has the IST as its standard time since, in such a case that it wouldn't have been there, the nation would have a contrast of \[2\]hours (as India is an enormous nation and has a huge East-west degree - there's a distinction of \[2\]hours from Gujarat in the west to Assam in the east). Consequently, IST is a significant meridian of longitude.

Note:
Indian Standard Time is utilized seen in India and Sri Lanka yet it takes references from the UTC (Universal Time Coordinate). The UTC has been created as a replacement to the Greenwich Mean Time. It is said that Universal Time Coordinate is a time standard that reflects the average speed of the Earth’s rotation. It is not measured using any clocks rather it is measured by observing the stars.