Question

(a) at what times of year are the periods of daylight and darkness the same everywhere on the earth? What are these times called? (b) Where is the noon sun directly overhead at these times?

Answer 1

The word, "equinox," means equal nights. The vernal equinox is around March 21, and the autumnal equinox is around September 21.

The noon sun is directly over the Equator at the equinoxes.