| |||||||||||||
|
Vernal Equinox (Spring)The date (near March 21 in the northern hemisphere) when night and day are nearly the same length and Sun crosses the celestial equator . The first day of Spring. Autumnal EquinoxThe date (near September 22 in the northern hemisphere) when night and day are nearly of the same length and Sun crosses the celestial equator. The first day of Autumn (Fall). |
|
Please read the
legal
page and
data policy page.
Awards
and media coverage -
credits page.
Site map
|