Question

Why is greenwich mean time important?

Answer 1

Answer:

As the reference for GMT, the Prime Meridian at Greenwich therefore became the centre of world time and the basis for the global system of time zones. The Airy Transit Circle (telescope) became the telescope that would define the Prime Meridian of the World.

Explanation:

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Answer 2

As the reference for GMT, the Prime Meridian at Greenwich therefore became the centre of world time and the basis for the global system of time zones. The Airy Transit Circle (telescope) became the telescope that would define the Prime Meridian of the World.