Question

why do places near equator have equal days and nights?

Answer 1

because it gets direct sunlight and the time to reach is also small

Answer 2

Answer:

Days and nights are equal at all places on earth on March 21 because on this day sun rays will fall in the vertical direction towards the equator or at the center position of the earth. This supplies the equal light distribution from pole to pole which makes the day and night duration same.