When does winter starts each year?

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winter starts when sun @ it's lowest point in sky (tropic of capricorn northern hemisphere 12/21/2012) tropic of cancer southern hemisphere 06/21/2013)

months between december 1st , february 28 considered meteorological winter.

in northern hemisphere sun @ it's lowest point in sky when it's on tropic of capricorn. marks start of winter solstice. time of year least amount of visible light in 24 hour period.



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