Why IATA divided the world into three traffic conferences?

Answer 1

Geographically the world is divided into four parts that are the Western hemisphere, Eastern Hemisphere, Southern Hemisphere, and Northern Hemisphere. The Equator is the imaginary line that passes horizontally and divides the earth equally, Similarly prime meridian is the line that passes vertically and divides the earth equally. The area which is to the south of Equator is termed as Southern Hemisphere and to the north of the equator is termed as Northern Hemisphere. Similarly, the countries or area which lies to the west of the prime meridian is called Western Hemisphere and to the east of the prime meridian is called Eastern Hemisphere. However, if this rule followed for Air travel it will cause confusion as the prime meridian which passes through London passes through many countries making it difficult to follow and the same applies to equator aswell. Hence to negate this issue IATA has divided the globe into the Western hemisphere comprising only the Americas and Greenland and Eastern hemisphere which comprises every other continent. For further segregation, the globe is divided into 3 areas also known as Traffic Conferences-TC1, TC2, TC3.