What year was Ding Hai in the Republic of China? Brief introduction of Ding Hainian in the Republic of China.

1. The 24th year of a cycle has a long history in China, and it is called "Dinghai Year" in the official calendar. If the number of years in the Gregorian calendar is divided by more than 60 and 27, or the number of years is reduced by 3, the remainder divided by 10 is 4, and the remainder divided by 12 is 0. The year from beginning of spring to beginning of spring in the following year is "Dinghai Year".

2. The calendar year of trunk and branch begins with the beginning of spring of the twenty-four solar terms, and the calendar year of trunk and branch is the calendar year method of trunk and branch. The same is true of the official almanac of past dynasties (that is, the Yellow Calendar). After the Republic of China, the emperor's year number was abandoned, and the lunar calendar can only record the year with dry branches, which ranges from the first day of the first month to New Year's Eve, which is indisputable. Lunar calendar and trunk calendar are two different calendars, which are different in the starting point of a year, the division rules of months and the number of days in each year.

3. Ding Hainian is one of the sixty sons of Ganzhi calendar. Sixty Jiazi has five pig years: Yihai, Dinghai, Jihai, Xinhai and Guihai. So there is a year of the pig every twelve years and a year of anchoring the sea every sixty years.