From next year, there will be no Chinese New Year's Eve for five consecutive years
News on January 10 that there is still 1 month to go before the Lunar New Year, and this is"The last Chinese New Year's Eve in recent years".
This is so because:From next year until 2029, Chinese New Year's Eve for 5 consecutive years will be the "29th of the Great Year"., and without Chinese New Year's Eve, it is purely "the moon to cause trouble".
An associate researcher at the Purple Mountain Observatory of the Chinese Academy of Sciences gave an explanation: This is related to China's unique lunar calendarThe lunar calendar is divided into large and small months, with 30 days for the big month and 29 days for the small monthThis is because the lunar calendar is calculated based on the waxing and waning of the moon, which is called the "synodic month" in astronomy.
According to the explanation of experts from the Chinese Academy of Sciences, this phenomenon of not having Chinese New Year's Eve for several consecutive years is actually because of the difference between large and small months in the lunar calendar. The lunar month has 30 days and the small month has 29 days, which is calculated according to the changes in the moon's circle and absence, and is called the "synodic month". Specifically, the first and fifteenth days of each lunar month are the moon's synod, that is, the moon's closest to the earth and farthest from the earth. Between these two days, the moon undergoes a half-month change in the waxing and waning of the moon, and this period is known as the "synodic month". Since the Moon's orbit around the Earth is elliptical, and the Earth also moves in orbit around the Sun, the length of the "synodic month" is not a fixed number of days, but at 2953 to 29Varies between 81 days. In the lunar arithmetic, the arrangement of the big and small months is to distribute the number of days in the year equally, so that the lunar year roughly coincides with the solar year. Since the length of the "synodic month" is not an integer, the number of days in each month is not the same, alternating between major and minor months. If the sum of the days in consecutive months is 30 or 31 days, there will be a situation where there are no Chinese New Year's Eve for consecutive months. This phenomenon is not an anomaly, but the normal operation of the lunar algorithm. While not having a Chinese New Year's Eve for several years in a row can make some people feel a little unaccustomed, it's only a small detail for the entire lunar calendar. After all, the lunar calendar has been developed and perfected for thousands of years and is one of the precious cultural heritages of the Chinese nation. 