What Day Does Spring Begin In 2024. Leap years are caused by earth's rotation. 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.
Astronomical spring officially begins at 11:06 p.m. Spring 2024 started on wednesday, march 20, 2024 (5 days ago) and ends on thursday, june 20th 2024 (in 87 days).