Is birthday according to the solar calendar or the lunar calendar?

Birthdays are celebrated according to the solar or lunar calendar. China people are still used to using the lunar calendar, while westerners' birthday dates are relatively simple. Date is the Gregorian calendar date of birth. If the birthday is February 29th, there will be a birthday in every leap year.

Generally in East Asia, people pay more attention to the birthdays of the elderly. Every birthday anniversary is a family gathering, which is also a family holiday. In East Asian tradition, birthdays at a certain age are particularly important, and some people hold special ceremonies, such as the coronation ceremony for men at the age of 20.

In East Asia where modern solar and lunar calendars are used together, such as China, Taiwan Province Province, Korean Peninsula, Viet Nam and Ryukyu, everyone can have two birthdays, the lunar calendar and the solar calendar.

Extended data

Real age and nominal age

Actual age: an accurate age calculation method adopted by law, which is calculated from the date when the fetus is born from the mother. It is 0 years old at birth, and one year old is added for every birthday thereafter.

Nominal age: the algorithm varies from place to place. When the fetus gives birth to the mother, it is "1 year", which increases by one year every year in the Lunar New Year.

East Asian tradition

One year old is the baby's first birthday after birth. Traditionally, there will be a special celebration called the one-year-old celebration, and a catch-up week will be held. Old people like to celebrate the birthdays of fifteen or some special people, which is called "birthday celebration", such as 50th birthday, 60th birthday, 66th birthday and so on.

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