What Is Lập Đông, When Does It Begin, and What Customs Come With It?
Lập Đông is the 19th of the 24 solar terms, marking the start of winter and usually falling on 7 or 8 November each year.
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In the system of 24 solar terms, each term lasts about 15 days, corresponding to 15 degrees on the ecliptic. Lập Đông begins when the Sun reaches 225 degrees and ends when it reaches 240 degrees, the moment Tiểu Tuyết begins.
From the article “What Is Lập Đông, When Does It Begin, and What Customs Come With It?”
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