That's the date of the vernal equinox, when both hemispheres of the Earth receive the same amount of daylight, according to the Old Farmer's Almanac. It marks the beginning of spring in the ...
A University of Illinois study from 2010, cited by Popular Mechanics in an October 2022 story, found The Old Farmer's Almanac only about 52% accurate over the years, "which is essentially ...
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