What is a Solstice? | National Geographic

What is the definition of a solstice, and when do they happen? Is the winter solstice always the first day of winter? Find out what causes these bi-annual astronomical events, as well as how they bring about the shortest and longest days of the year.
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What is a Solstice? | National Geographic
https://youtu.be/btcTfor-j-c

National Geographic
https://www.youtube.com/natgeo


Source: National Geographic, https://www.youtube.com/watch?v=btcTfor-j-c
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