When Is The Vernal Equinox 2025. The first day of spring is march 20, 2024, at 5:02 a.m. On the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its.
In 2025, the first day of spring is thursday, march 20. The vernal equinox, also known as the spring equinox, will occur on march 20, 2025, at 10:15 utc (coordinated universal time).