Days when the suns light hits both hemispheres equally are called?

The correct answer is - equinox.

The days when the amount of sunlight is the same on both hemispheres is are called equinoxes. The equinox appears when the sun is directly over the equator (the sun rays fall at an angle of 90 degrees), which means that the sunlight is equally dispersed on the same latitudes on the opposite hemispheres, and the days last the same as the nights do.