Spring Equinox 2024 Usa Map. This date marks the spring equinox in the northern hemisphere. The spring equinox (march 19, 2024) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment.
The spring equinox (as well as autumnal equinox) is the moment when neither of the earthโs hemispheres is inclined towards or away from the sun. When is the first day of spring in 2024?