Spring Equinox 2025 Northern Hemisphere Calendar

Spring Equinox 2025 Northern Hemisphere Calendar. There are two equinoxes each year marking the dates on which the spring and autumn seasons begin and the apparent geocentric sun crosses the celestial equator. Earth’s tilt is now bringing spring and summer to the northern hemisphere.

There are two equinoxes each year marking the dates on which the spring and autumn seasons begin and the apparent geocentric sun crosses the celestial equator. Equinoxes mark the changing of astronomical seasons.