Is It Spring Yet 2024. The reason the first day of spring was march 19 was because 2024 is a leap year. It marks almost equal lengths of day and night, although the amount of daylight is.

This year, the spring equinox falls on wednesday 20 march, and the astronomical spring lasts until the summer solstice. Everything you need to know about the spring equinox 2024, including when it is, what it is and how it affects our planet.