The 9th day of the 9th lunar month is the traditional Chongyang Festival, or Double Ninth Festival. It usually falls in October in the Gregorian calendar.

• 农历九月九日，为传统的重阳节。九月九日，日月并阳，两九相重，故而叫重阳，也叫重九，古人认为是个值得庆贺的吉利日子，并且从很早就开始过此节日。