What is an equinox? Which seasons are indicated by it in both the hemispheres?
After three months the revolving earth comes to this position. The sun shines vertically over the Equator. The days and nights are of equal duration in both the hemispheres on this date. Both the hemispheres receive the same amount of heat. This situation is called Equinox.
It is autumn season in the Northern Hemisphere and spring season in Southern Hemisphere.