2012-09-29 12:25:52 The Autumn Equinox On the 23rd September, the Earth was in such a position relative to the Sun, that day was equally as long as night (12 hours) through the entire world. Only twice a year does the Sun rise exactally in the East and set precisely in the West. One of these days is September 23rd. The Earth rotates around the Sun and because of the tilt on its axis, the poles are not equally illuminated. Because of this, one pole is six months in darkness while the other is in six months of day light, regardless of the Earth's rotation. However, twice a year the poles receive an equal amount of day light: 21.03 and 23.09. When this occurs then both day and night are equally long – 12 hours. The Sun is then in its' zenith above the equator. The days then continue to get shorter until the Winter solstice when the days are the shortest, and from then on, they begin to get longer.
Photogallery: Autumn in Sopnica
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Osnovna ¹kola Sesvetska Sopnica |