Illumination of Earth by the Sun on the day of the equinox (vernal and autumnal). A view of the eastern hemisphere showing noon in Central European time zone (ignoring DST) on the day of the equinox. (Photo from Wikipedia)

Spring officially arrived on Monday, March 20, at 5:24 p.m. The time is exact because 5:24 p.m. Eastern Daylight Time was the precise moment in which the sun crossed the Earth’s equator in its northward…