Why is it 5.30 p.m. in India and 12.00 noon in London?

The time difference between India and London is primarily due to the Earth’s rotation and the establishment of time zones. Earth is divided into 24 time zones, each representing 15 degrees of longitude. The prime meridian, located at 0 degrees longitude, passes through Greenwich, London, and serves as the reference point for Greenwich Mean Time (GMT).

India, being to the east of the prime meridian, is ahead of Greenwich Mean Time. As the Earth rotates from west to east, places to the east experience time ahead of locations to the west. India follows Indian Standard Time (IST), which is 5 hours and 30 minutes ahead of GMT. Therefore, when it is 5:30 p.m. in India, it is noon (12:00 p.m.) in London.

This time difference allows for a standardized and systematic way of measuring and coordinating time across different regions of the world. It accounts for the Earth’s rotation and ensures that people in different locations can have a common reference for scheduling and organizing activities. The implementation of time zones helps maintain coherence in global communication and facilitates efficient coordination of events and activities on a global scale.