The vernal equinox, marking the first day of spring, occurs on Thursday, March 20, 2025, at 5:01 a.m. ET. An equinox happens when the sun's rays are directly over the equator, resulting in ...
Because of this, the date when day and night are of exactly equal length usually comes a few days after the spring equinox. At precisely 5:01 a.m. ET on Thursday, March 20, 2025. Teh winter ...
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