Question

Why is it 5:30 p.m. in india and 12:00 noon in London?​

Answer 1

Answer:

The Earth rotates 1° in four minute. ... Therefore, the time in India is 5 hrs and 28 minutes ahead of London (since India is located to the east of Greenwich). So if the time in London is 12:00 pm, we will add 5 hrs and 30 minutes to it which will be 5:30 pm.

Answer 2

This is because of India's longitudinal position and distance from the Prime Meridian.

Explanation:

A Prime Meridian is the meridian in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian form a great circle. This great circle divides a spheroid into two hemispheres.

Greenwich Mean Time (Greenwich Meridian Time or GMT) is the mean solar time at the Royal Observatory in Greenwich, London, reckoned from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon; as a consequence, it cannot be used to specify a precise time unless a context is given.

India has such longitudinal position that it has time delay of about 5 hours and 30 minutes, expressed in form of GMT+5:30.