vernal equinox vernal Equinox http://wonderopolis.org/wonder/what-is-the-vernal-equinox equal Vernal equinox equal http://wonderopolis.org/wonder/what-is-the-vernal-equinox vernal vernal equinox happens in March spring equinox equinox March equinox equator equinox What Is the Vernal Equinox? | Wonderopolis vernal spring built the Great Sphinx tilt