Happy vernal equinox! 🍀 Today, March 20, marks the first day of spring in the Northern Hemisphere and the first day of autumn in the Southern Hemisphere. On this date, the length of day and night are almost equal in both hemispheres. After this date, the Sun will shine more directly on the Northern Hemisphere than on the Southern Hemisphere until the autumnal equinox. Credit: NASA/JPL-Caltech #NASA #WhatsUp #Equinox