202 1 What is the first day of winter? 202 1 The first day of winter is time.

The first day of winter in 1 and 202 1 is165438+1October 7th.

2. The four solar terms, beginning of spring, Changxia, beginning of autumn and beginning of winter, are the dividing lines of the four seasons, so the winter in 2022 starts from beginning of winter before beginning of spring, so the winter in 202 1 lasts from165438+1October 7 to February 3, 2022.