What Is The First Day Of Spring 2024. The first day of spring, also known as the vernal equinox, is a momentous occasion that heralds the arrival of a season marked. In 2024, the spring equinox—aka the first day of spring—occurs on tuesday, march 19, 2024.
In the northern hemisphere, the first day of spring is tuesday, march 19, 2024. The reason the first day of spring was march 19 was because 2024 is a leap year.