1st Day Of Spring 2025 Date Usa. In 2025, the spring equinox, also known as the first day of spring, will occur on wednesday, march 20, at precisely 3:07 utc (coordinated universal time). If you happen to reside in the northern hemisphere, this date will also mark the start of the spring season.

When is the first day of spring in 2025? Winter will last until the spring equinox on march 20, 2025.