闰 October : 闰 October refers to the meaning of the two calendars in a certain year, according to the yin and yang calendar. Lei Yue is rare in October, and it is not in the 21st, 23rd, 27th, 28th, 32nd, 34th, and 38th centuries. Appeared in October. In the 200 years before 2020, there were only two times in the 19th century, 1870 (Gengwu year) and the 20th century, 1984 (Year of Jiazi). The next October will appear in the 22nd century, 2166 (Bing Yin year). 下 The next year of the October year is the latest year of the Spring Festival, because the Spring Festival of the October year is generally on January 31 or February 1, and some years are on January 30 (such as the 2521 century 2481) ), In very few years, the Spring Festival is on February 2 (such as the 20th century 1984 and the 24th century 2318).