Today marks the first day of spring 2025. The vernal equinox marks the start of spring every March. The autumnal equinox marks the start of fall every September. An equinox occurs, "two times of ...

Equinoxes occur during the fall and spring and are called the autumnal and vernal equinoxes. They mark the first day of spring and the first day of fall each year. Solstices occur during the ...

Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the sun is on the same plane as the equator. After the vernal equinox in March, ...

A flock of swans fly at sunrise on the first day of fall in London's Richmond Park ... Every six months, once in March and again in September, an equinox splits Earth’s day almost in half ...