Which line is the prime meridian state its importance?
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prime meridian also known as Greenwich meridian is an imaginary line, dividing the Earth into two hemispheres i.e. eastern hemisphere and western hemisphere. it is used to give time zones for different areas on the earth depending on how far or close they are from the prime meridian. it acts as a reference point for all other longitudes. it is used to denote solar time.
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Explanation:
Greenwich meridian is known as the prime meridian.The time is calculated with respect to this meridian.So it is the basic meridian and time is written as G.M.T.(Greenwich meridian time).The earth takes 4 minutes for moving 1 degree distance
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