Here in the Northern Hemisphere, the month of March brings the first day of the Spring season. On March 20th, the length of day and night are equivalent at 12 hours each. From there, the days will continue to get longer and the nights will become shorter, until we reach the Summer solstice on June 21, 2023. The exact moment of the March equinox occurs when the Sun appears to cross the celestial equator at 5:20pm EST.