The difference between one year old and nominal age.

The one-year-old algorithm is: born at the age of 0, and then add one year to every birthday in the Gregorian calendar. One year old is a person's full-time age.

Nominal age

The nominal age is the total year of the lunar calendar. The algorithm is: one year old at birth, and then one year old on the first day of the first lunar month. 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 born in 1 year, you will increase 1 year every New Year. Generally calculated according to the lunar calendar, but also calculated according to the Gregorian calendar.

physical age

Real age means one year old. Virtual age is a method of remembering age relative to real age (now collectively referred to as one year old). Actual age: (also called one year old) generally refers to the coming (less than half a year) or past time, which is called actual age. Used for oral conversation.

Mao sui

Gross age: (also known as nominal age) The difference is that the coming date (generally no more than one year) is included. Used for etiquette. Nominal age: (also called gross age) The difference is that it includes pregnancy (pregnancy in October). Often used for communication and argument.