One year old or nominal age, how to calculate?

As of 202 1 year, people born in 200 1 year are 20 years old this year.

The nominal age is a commonly used age calculation method in China. It is calculated according to the calendar year after birth, that is, even if you were 1 year when you were born, you will increase 1 year every New Year. Generally, it is calculated according to the lunar calendar, but also according to the Gregorian calendar. For example, a baby born at the end of 65438+February will be 1 year after birth, and 1 year after the Gregorian calendar 1 year. In this way, the baby is only a few days old and is already 2 years old.

Age calculation:

People in China have always had two understandings of age, one is nominal age, the other is full age, the other is lunar calendar, and the other is Gregorian calendar. People in China are used to calling it solar calendar.

For nominal age, it is counted from the time of conception, while one year old refers to the actual birth time. Therefore, most people in China are one year old at birth. However, due to the different calculation methods of the Gregorian calendar, I believe everyone can have two birthdays every year.

Now, everyone has an ID card, and the date indicated on it is the legal birthday. But when most people tell others their age, they are still used to telling others their nominal age, and sometimes they are even two years old to show their maturity.