Spring 2024 Means. It's officially the first day of spring, but why is it today and what is an 'equinox'? The first day of spring is march 20, 2024, at 5:02 a.m.
Here’s everything to know about the season change, along with dates to mark on your calendar. The first day of spring, also known as the spring equinox, is march 19 this year, if you are using the widely accepted astronomical date.