• The vernal equinox on March 20, 2026, marks the official start of spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
• During the vernal equinox, the sun is directly over the equator, resulting in nearly equal day and night lengths worldwide.
• Cultures around the world celebrate the vernal equinox with unique traditions, such as Vernal Equinox Day in Japan and the serpent shadow at Chichen Itza in Mexico.