Question

Why do we need standard time for india?

Answer 1

Since many meridians pass through it, it is important to adopt the local timeof one central meridian of a country as the standard time for the country. Thus, we need a standard meridian for the country. In India 82 ½ °E longitude determines the standard time. This is known as the Indian Standard Time.
I think so it may help you in your work if it please mark me as brilliant please

Answer 2

India is a huge country .. So it has different local times .The western part is 2 hours slower than eastern part. It becomes difficult to run India becoz of the different times . So the Indian govt. has choose the time of Allahabad as the standard time of India to help the govt. run smoothly .