Does the birthday have to be in the lunar calendar?

Not necessarily. Birthdays can be celebrated according to the date on the ID card or not, depending on personal customs.

The date of birth on the ID card is generally filled in according to the Gregorian calendar. Besides the Gregorian calendar, China also has the Lunar calendar. If you are used to the date of the lunar calendar, you can also follow the lunar calendar. There are no strict requirements. However, the elderly generally like to celebrate the Lunar Birthday, while young people tend to remember the Gregorian Birthday more easily.

The difference between lunar birthday and Gregorian birthday

Lunar birthdays are calculated in nominal years, which is a traditional age calculation method commonly used in China. It is calculated according to the calendar year after birth, that is to say, even if you are born, you are still 1 year, and you will increase 1 year every new year.

Gregorian birthday is the real age, which refers to someone's date of birth in the Gregorian calendar. The age calculated from the birthday of the solar calendar, also known as sufficient age, refers to the number of anniversaries or birthdays that have passed from birth to the calculation time.