Autumn Equinox 2025 Australia. The following table gives the date and time of the important astronomical events for the year. 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.

Mabon is named after the welsh god mabon ap. Vernal / spring equinox 2024.