65438+1the ninth day of October is winter, and the solar calendar is165438+1October 13,165438+1October 7 is a solar term in beginning of winter, so it is winter (.

In some areas, winter is the fourth season. As the weather turns cold, it means silence and desolation in many areas (especially in the northeast). When the cold current strikes, living things will reduce their life activities, many plants will shed leaves, animals will hibernate, and some are called hibernation. Migratory birds will fly to warm places for the winter.