First Day Of Spring Of 2024. 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 seasons are defined as spring (march, april, may), summer (june, july, august),.

The first day of spring is tuesday, march 19, 2024. Here are the equinox and solstice dates—plus, answers to common questions.