Winter is the coldest season of the year, between autumn and spring. It is caused by the axis of the Earth in the respective hemisphere being oriented away from the Sun. Different cultures define different dates as the start of winter, and some use a definition based on weather. In many regions, winter is associated with snow and freezing temperatures.In winter the days are shortest and the nights are longest, with days lengthening as the season progresses after the solstice.
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