Question

What is the geographical importance of march21, june21, September 23, December 22

Answer 1

Answer:

These indicates four different seasons in world.

the revolution around the sun , the tilt of the axis and the parallelism of the earth's axis.

Explanation:

On march 21 and september 23 , the sunray's fall vertically over the equator . Hence the length of the day and night are equal. This is called EQINOXES

   On June 21 , the sunsray's fall vertically above the tropic of cancer . so the longest day in the northern hemisphere and shortest day in the southern hemisphere. This is called SUMMER SOLSTICE.

   On December 22 , the sunsray's falls vertically above the tropic of capricon . The longest night in the northern hemisphere and shortest night in the southern hemisphere . This is called WINTER SOLSTICE.