1st Day Of Spring 2024. In the northern hemisphere, the astronomical start of spring is also known as the spring equinox. The spring equinox begins on march 20, which is the first day of astronomical spring.
Potentially the last 90°+ day of the year in louisville wednesday. The spring equinox (as well as autumnal equinox) is the moment when neither of the earth’s hemispheres is inclined towards or away from the sun.
