When is Tomb-Sweeping Day in 24 years?

Tomb-Sweeping Day is an ancient festival of the Chinese nation. It is not only a solemn festival to pay homage to ancestors, but also a happy festival for people to get close to nature, go for an outing and enjoy the fun of spring. Dou Zhi B (or Yang Jing reaches 15) is Tomb-Sweeping Day Qi, and the node time is around April 5 of Gregorian calendar. At this time, vitality is booming, yin qi is declining, and everything is "going to the old and welcoming the new". The earth presents a scene of spring and tranquility, which is a good time to go for an outing in spring and sweep the graves. Tomb-Sweeping Day, who worships his ancestors, is very long. There are two statements: 8 days before 10 and 10 days before 10. These nearly 20 days belong to ancestor worship and Qingming.