Fall Equinox 2024 Pagan Calendar. The spring equinox, or ostara, occurs in march and marks the beginning of spring, while the fall equinox, or mabon, occurs in september and marks the beginning of autumn. The autumnal equinox occurs on september 22nd, 2 024, in the northern hemisphere.

Mabon (autumn equinox) when is mabon: Our 2024 pagan calendar is filled with important dates and times for key pagan celebrations of many different belief systems.