Autumn Equinox 2025 Australia Calendar. Autumn officially graces australia on march 21st, marking the autumnal equinox. The 1st day of autumn in australia is the 20th of march.
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 autumn equinox in the southern hemisphere is also known as the march equinox.
