(CNN) --For the past six months, the days have grown shorter and the nights have grown longer in the Northern Hemisphere. But that's about to reverse itself. Winter solstice 2021, the shortest day of ...
The 2021 winter solstice occurred at 10:59 a.m. ET/7:59 a.m. PT on Tuesday, Dec. 21, marking the official start of the astronomical winter and the shortest day of the year for the Northern Hemisphere.
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