1.

when the Prime Meridian of Greenwich has the sun at the highest point in the sky, all the places along this Meridian will have first moon or mid-day second morning third midnight​

Answer»

Explanation:

A PRIME meridian is a meridian (a LINE of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great CIRCLE. This great circle divides a spheroid, e.g., EARTH, into two hemispheres.



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