What Is The 1st Day Of Spring 2024. — spring gets its official start tuesday, march 19, 2024, in the northern hemisphere. What is the spring equinox and what happens on this day?
— the reason the first day of spring was march 19 was because 2024 is a leap year. Spring in the northern hemisphere begins on march 20, 2025, at 09:02 gmt (05:02 a.m.