What is the date of the ninth year of this year?

This year's solar term is 65438+20231October 9.

Entering nine, also called entering nine and calculating nine, is a concept in the solar terms of China traditional culture, which is calculated according to the China lunar calendar. The calculation method of entering nine is to count from the winter solstice, every nine days is a nine, and every nine days has nine days. The date of entering September this year is winter solstice plus 99 days, that is, 65438+1October 9.