Fall Equinox 2025 Southern Hemisphere Calendar

Fall Equinox 2025 Southern Hemisphere Calendar. 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. The northern vernal equinox (that is, the vernal equinox in the northern hemisphere) occurs around march 21st of each year, and the northern autumnal equinox occurs around september 21st.

The northern vernal equinox (that is, the vernal equinox in the northern hemisphere) occurs around march 21st of each year, and the northern autumnal equinox occurs around september 21st. 22), but for many it may feel like autumn has already arrived, with crisp weather in the northeast and pacific northwest, apple picking signs.