Autumnal Equinox and Its Cultural Relations

This article explores the meaning and significance of the Equinox, an astronomical phenomenon in which day and night are of equal length, occurring twice each year: the Vernal Equinox (March 20–21) and the Autumnal Equinox (September 22–23). The discussion covers astronomical, cultural and agricultural dimensions, with examples such as Japan’s national holiday Shūbun no Hi, the Nowruz New Year festival in Iran and Afghanistan and the Harvest Festival in Europe. Statistical records from the past three years are presented to demonstrate the consistency of equinox dates under the Gregorian calendar system. The study concludes that the equinox represents not only a natural balance but also a symbolic connection between humanity and the cosmos across multiple dimensions.