Autumn Equinox 2024 Time. The occurrence of spring equinox usually falls on the 20th or 21st march, and the autumnal equinox falls on 22nd or 23rd september every year. 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,.
According to the old farmer’s almanac, an equinox occurs when the sun crosses the celestial equator, an imaginary extension of earth’s equator line into. What time is the fall equinox 2024?