Question

what do you mean by anti meridian

Answer 1

It denote that sun is between east and at our top

Answer 2

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An antimeridian is the meridian of longitude opposite any given meridian. A meridian and its antimeridian form a continuous ring around the Earth. The Antimeridian is the meridian of longitude opposite the Prime Meridian. The Antimeridian is used as the basis for the International Date Line.