Highlight the importance of March 21, June 21, September 23 and Decemb

1.	Highlight the importance of March 21, June 21, September 23 and December 22.
Answer» On 21^stMarch, the sun rays are overhead the equator, 0°. So the days and nights are of equal duration, namely 12 hours at all places on the earth. This is called equinoxes. On June 21st, sun appears overhead at the tropic of cancer. This is called summer solstice, and it makes the summer season in the Northern Hemisphere. On September 23^rd , the sun is overhead at the equator and experiences equinoxes that means equal days and nights. On 22^nd December, the sun continues its apparent movement from the equator to the Southern Hemisphere and reaches vertically above the tropic of capricon. This is called winter solstice.

Highlight the importance of March 21, June 21, September 23 and December 22.

Answer»

On 21^stMarch, the sun rays are overhead the equator, 0°. So the days and nights are of equal duration, namely 12 hours at all places on the earth. This is called equinoxes. On June 21st, sun appears overhead at the tropic of cancer. This is called summer solstice, and it makes the summer season in the Northern Hemisphere.

On September 23^rd , the sun is overhead at the equator and experiences equinoxes that means equal days and nights. On 22^nd December, the sun continues its apparent movement from the equator to the Southern Hemisphere and reaches vertically above the tropic of capricon. This is called winter solstice.

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