There were two main reasons for the

There were two main reasons for the choice. The first was the fact that the USA had already chosen Greenwich as the basis for its own national time zone system. The second was that in the late 19th century, 72% of the world's commerce depended on sea-charts which used Greenwich as the Prime Meridian.The decision was based on the argument that by naming Greenwich as Longitude 0º, it would be advantageous to the largest number of people. Therefore the Prime Meridian at Greenwich became the centre of world time.

There were two main reasons for the choice. The first was the fact that the USA had already chosen Greenwich as the basis for its own national time zone system. The second was that in the Late 19th Century, 72% of the World's commerce depended on Sea-Charts which used Greenwich as the Prime Meridian. The decision was based on the argument that by naming Greenwich as Longitude 0º, it would be advantageous to the. largest number of people. Therefore the Prime Meridian at Greenwich became the centre of world time.

There were two main reasons for the choice. The first was the fact that the USA had already chosen Greenwich as the basis. For its own national time zone system. The second was that in the late, 19th century 72% of the world "s commerce depended. On sea-charts which used Greenwich as the Prime Meridian.The decision was based on the argument that by naming Greenwich as Longitude 0 º it would, be advantageous to the largest. Number of people. Therefore the Prime Meridian at Greenwich became the centre of world time.