Question

It is a common understanding among the countries of the world to select a Standard Meridian in multiples of 7°30′. What is the reason?

• A. Historical importance of 7°30′ longitude difference.
• B. Number of countries at this difference is more.
• C. Corresponding time difference is equal to 30 minutes.
• D. For a lot of countries this longitude passes through the centre of the country.

Answer 1

The correct option is C Corresponding time difference is equal to 30 minutes.

It is a common understanding among the countries of the world to select a Standard Meridian in multiples of 7°30′. This is done as the corresponding time difference between two such longitudes is equal to half an hour.