Vernal Equinox-Równonoc
http://pl.wikipedia.org/wiki/R%C3%B3wnonoc (http://pl.wikipedia.org/wiki/R%C3%B3wnonoc)
(http://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Earth-lighting-equinox_PL.png/320px-Earth-lighting-equinox_PL.png)
http://en.wikipedia.org/wiki/File:Seeing_Equinoxes_and_Solstices_from_Space.ogv