An equinox occurs when the center of the Sun aligns directly above the Earth’s equator, resulting in nearly equal lengths of day and night worldwide. These events happen twice a year, marking the onset of spring and autumn.
During the spring equinox, typically around March 20th, the Northern Hemisphere transitions from winter to spring, while the Southern Hemisphere shifts from summer to autumn.
Conversely, the autumn equinox, around September 22nd, signals the transition from summer to autumn in the Northern Hemisphere and from winter to spring in the Southern Hemisphere.
