Spring

Spring is the season that immediately follows Winter and precedes Summer, characterized by blooming flowers and trees.

Asked by Autumn Huels in Seasons, Meteorology and Weather, Astronomy, Spring

Does spring start a day early in 2020?

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In the United States, the vernal equinox, which signifies the start of astronomical spring in the northern hemisphere, actually happens on March 19, 20, or 21 each year. We haven’t had a March 19 equinox since 1896, and we won’t have a March 21 equinox until 2101. I say it marks the beginning of astronomical spring because meteorological spring (based on weather patterns) starts March 1. Astronomical spring is a little harder to explain. The Earth’s axis is always tilted at about 23 degrees, meaning that depending on where it is in its orbit, one hemisphere or the other is closer to the sun. The equinoxes (the vernal equinox in March and the autumnal equinox in September) mark the points in the orbit where neither hemisphere is tilted toward nor away from the sun, meaning day and night are nearly equal.