September Equinox

The September equinox, also known as the autumnal equinox in the Northern Hemisphere and the vernal equinox in the Southern Hemisphere, occurs around September 22 or 23 each year. This equinox marks the moment when the Sun crosses the celestial equator, heading south. On this day, day and night are approximately equal in length worldwide. The September equinox is a significant event in both astronomy and cultural traditions, symbolizing change and balance as it marks the transition between seasons.