Autumn Equinox 2024 Australia Calendar

Autumn Equinox 2024 Australia Calendar. The autumnal equinox, also known as the september equinox in the northern hemisphere, begins on the day when the sun appears to cross the celestial equator and heads southward. This page gives the day length in hours, minutes and seconds on equinox day, including previous and next day.

Autumn equinox 2024 (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 northern hemisphere to the southern. As with the spring equinox this is a point of seasonal equilibrium with days and nights being almost exactly 12 hours long each.