For example:
People born on the first day of the first month can only live for one year in vain. Because he won't celebrate the New Year until he is one year old.
People born on the thirtieth day of the twelfth lunar month will live for two years in vain. Because he was born in the New Year.
Born in February 1982, 65438, he was two years old at the Spring Festival in 1983 and 25 years old after the Spring Festival in 2006.
Extended data:
The nominal age is an important folk custom of the Chinese nation, which is based on the Spring Festival (Lunar New Year), and the one-year-old is based on my birthday. The specific conversion methods are as follows: the first method: convert the nominal age into the real age: before my birthday in the solar calendar, the real age = nominal age-2; My birthday after the solar calendar, one year old = nominal age-1; Conversion from one year old to nominal age: before my birthday in the solar calendar, nominal age = one year old+2; After my birthday in the solar calendar, nominal age = one year old+1. The second type: nominal age = current year (lunar calendar)-year of birth (lunar calendar)+1.
The calculation method of nominal age is: one year after birth, one year after the Spring Festival (in ancient times, it is now beginning of spring). But some people are two years older than their full year of life. This algorithm is divided according to the first half and the second half of the year of birth. The imaginary year born in the first half of the year is only one year older than the full year, and the second half is two years older (solar calendar or lunar calendar).
Baidu Encyclopedia-Virtual Age