3
Twice.
On the Autumnal equinox and on the Vernal equinox.
Twice, at the Summer and Winter Solstaces.
Equinox
Two times
These are the Vernal [or Spring ] and Winter Equinox . These days differ slightly and should be marked on your calendar.
Because of the tilt of earth's axis.
Because of the tilt of the Earth's axis.
Because of the tilt of earth's axis.
Saturday
The Equinox (Vernal & Autumnal) There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes
The two days of the year when there is exactly 12 hours of night and 12 hours of day are the equinoxes. They occur around the 20th of March and the 23rd of September each year.
The equinox is when, twice each year, day and night are of equal length (about 22 September and 20 March).
114 days