The local time at Greenwich is considered to be the International Standard Time.

Question

Give geographical reason for the following:

The local time at Greenwich is considered to be the International Standard Time.

Answer 1

1. The International Standard Time has been decided according to 0° longitude. 

2. 0° longitude passes through Greenwich, England. 

3. For an international coordination, it is essential to bring compatibility between the standard times of various countries in the world.

For this purpose, the local time at Greenwich is considered to be the International Standard Time.