Vernal Equinox 2024 Uk. In astronomy, the aries point or vernal point is the point on the ecliptic from which the sun passes from the southern celestial hemisphere to the northern celestial hemisphere,. When is first day of spring.

In other words, on the day of the vernal equinox, day. A guide explaining how earth’s tilt and orbit around the sun causes seasons, solstices and equinoxes, and when.