Subtract 1995 in 2023, and the year of birth can be calculated as 1995. If the date of birth is between 65438+1 October1and 65438+February 3 1, the calculated age is 28 years old in 2023; If the date of birth is after 65438+ 10/in 2023, the calculated age in 2023 is 29 years old.
The concept of "age":
It can be divided into "one year old" and "nominal age". In the traditional culture of China, the nominal age refers to an increase of one year after each Spring Festival, counting from the year of birth. Therefore, if the person born in 1995 was born before the Spring Festival in 1995, he will be 29 years old before the Spring Festival in 2023, which means there may be a difference between nominal age and one year old. In modern life, it is generally believed that "age" refers to a whole year.
Calendar knowledge
Gregorian calendar, also called solar calendar, as the name implies, is based on the movement cycle of the earth around the sun, which was learned by the ancient Romans from the ancient Egyptians and spread all over the world with the expansion of the Roman Empire and the rise of Christianity.
The Gregorian calendar has 365 days in a normal year and 366 days in a leap year, once every four years, once in a hundred years and once again in the 400th year, that is, there are 97 leap years every 400 years. Gregorian calendar only has leap in February, with 28 days in a normal year and 29 days in a leap year. The remaining 1 1 month is divided into big and small months, big month is 3 1 day, and small month is 30 days.
Gregorian calendar is the most widely used international calendar. Now in China, the Gregorian calendar is required for official occasions such as government documents, contracts, company documents, certificates and bills. The Gregorian calendar adopts the year of AD, and Arabic numerals are needed for writing.