Day night day Equinox or equal is the date time day and night are equal. Because it is the day that the Sun is positioned perpendicular to the Earth's equator (Equator) fit, which occurs twice a year as follows:
Equinox Day or night, equality is the date of the day and night are equal. Since it is a day when the sun is positioned perpendicular to the Equator (Equator), the world average, which occurs 2 times a year.
The vernal equinox, or the night, equality is the daytime and night are equal. Since the day the sun in a position perpendicular to the equator (Equator) of the world, which will happen each year 2 fit times including .