The Autumnal Equinox marks the beginning of the Fall Season in the Northern Hemisphere (and Spring in the Southern Hemisphere), and again on this day, the length of day and night become twelve hours each all over the world.
(The Autumnal Equinox; marks; the beginning of the Fall Season in the Northern Hemisphere (and Spring in the Southern Hemisphere) (the length of day and night; become; twelve hours each all over the world; T:again on this day)
The Autumnal Equinox the length of day and night
marks become
the beginning of the Fall Season in the Northern Hemisphere (and Spring in the Southern Hemisphere
twelve hours each all over the world T:again on this day