For those born on Jiayin Day, when is Jiayin Day?

Jiayin Day is the first day of January in the lunar calendar, the first day of January in the official calendar, and the day before is Jiazi Day. Life is based on solar terms, that is, Gregorian calendar 1 month is the month where the Spring Festival is held, and the main branch of this month is the "first month". Calendar with branches for years, months, days and hours. China's traditional calendar, the trunk calendar, is the chronological method of [BFB_0xf], that is, ten-day trunk and twelve branches are combined respectively, and A, B, C, D, G, Xin, nonyl and decyl are combined once every 60 days, and the serial numbers of year, month, day and time are recorded repeatedly. The dry calendar is related to the periodic movement of the earth around the sun, which can reflect the climate change throughout the year.