Autumn Equinox 2025 Melbourne. Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the. The word ‘equinox’ derives from the latin for ‘equal light’.
Wherever you are at the spring and autumn equinoxes (except the north and south poles) the sun rises due east and sets due west. Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the.