65438+ February 65438+ May. Fat days are not days, but four seasons. In the winter of 2020, the fat day is 65438+February 15, and the four seasons fat day refers to: the day when spring meets Shen, Zi and Chen; Summer, the days of the sea, the foundation and the end; Autumn is the day of overcast, noon and defense; Winter is a unique, single and ugly day.