20th March – Vernal Equinox

The vernal equinox, which occurs at 7:02 a.m. EDT today (March 20), is probably the most important astronomical event of the year.

Although popularly described as “the first day of spring” in the Northern Hemisphere, the annual event is actually much more important than that. More than any other event, it marks the beginning of the astronomical year.

Vernal Equinox

Vernal Equinox

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