First Day Of Spring 2024 Ontario. The first day of spring is march 20, 2024, at 5:02 a.m. The first day of astronomical of spring arrives on tuesday, march 19, 2024, at 11:06 pm edt, but it certainly won’t look like it… despite a month filled with unseasonably warm temperatures that saw.

For those of us in the northern hemisphere, this was. In the northern hemisphere, the first day of spring is tuesday, march 19, 2024.