That happens twice, at the "equinoxes".
The duration of Night on Earth is 2.15 hours.
1) Near the equator, year round. 2) Almost anywhere on Earth, around the equinoxes.
Equinox
Anywhere on the night side of the Earth.
no
No, the equator is an imaginary line that divides the Earth into northern and southern hemispheres. The sun is directly overhead the equator only during the equinoxes, when day and night are of equal length.
There would be no seasons, and no change in the length of day and night, anywhere on Earth.
the vernal equinox in late April and the autumn equinox in late September
yes
Day and night are of equal length throughout the year at the equator.
equinox
Anywhere around the equator, the days and nights are always about equal.