When is beginning of autumn this year?

Xinhua News Agency, Nanjing, August 6th (Reporter Cai, Zhou Runjian) beginning of autumn is coming, but there are several different opinions about the exact time of beginning of autumn this year, some say beginning of autumn on the 7th, and some say beginning of autumn on the 8th. According to the astronomical calendar compiled by Purple Mountain Observatory of Chinese Academy of Sciences, the exact time in beginning of autumn this year is 23: 4 1 on the 7th.

Wang Sichao, a researcher at the Purple Mountain Observatory of the Chinese Academy of Sciences, said that the algorithm of the Purple Mountain Observatory is very

Authority. The reason why other versions appear in society may be due to the carelessness in the compilation of some calendars. In addition, there may be some deviations in the algorithm of solar terms.

Astronomical experts said that the time in beginning of autumn is relatively fixed, either August 7th or 8th, and the specific hours and minutes are not fixed. According to the astronomical calendar of1995-201year, Wang Sichao showed the time variation law of beginning of autumn. Generally, there will be a beginning of autumn on August 8th every four years, and others will be on August 7th, such as 1995, 1999, 2003.

Twenty-four solar terms are a calendar created by ancient astronomers and working people in China after summing up the relationship between astronomy, meteorology and agricultural production. It reflects the changes in Xia Dong and the farming season, and it can be said to be a household name in the whole country, especially in rural areas. Beginning of autumn is one of the 24 solar terms, which generally indicates that hot summer is coming and autumn is coming. After beginning of autumn, although the summer heat is hard to disappear for a while, there is still the afterglow of "autumn tiger", but the general trend is that the weather is getting colder and colder. Of course, due to different climates, the start time of autumn is also different.