What Day Is The Spring Equinox 2025
What Day Is The Spring Equinox 2025. The day is known as spring equinox. This date marks the spring equinox in the northern hemisphere. On the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic. In 2025, the spring equinox—aka the first day of spring—occurs on thursday, march …