Where the days and nights are equal?
The days and nights are equal at the equator. This phenomenon is called equinox. At the time of equinox, the center of the Sun being in the same plane as the Earth’s equator.

Equator
The days and nights are equal at the equator. This phenomenon is called equinox. At the time of equinox, the center of the Sun being in the same plane as the Earth’s equator.
Equator