Is the birthday on the ID card solar or lunar?

The date of birth on the ID card should be Gregorian calendar (i.e. Gregorian calendar).

According to the "Measures for the Administration of Household Registration" promulgated by the Ministry of Public Security, China citizens' household registration materials and identity documents must use the AD date; However, due to the folk custom of celebrating the lunar birthday in China, some rural grassroots in remote areas use the lunar date when issuing birth certificates at the request of their families, which leads the public security organs to register the date of birth as the lunar date when registering their household registration.

Later, it was emphasized that "the irregular behavior of using the lunar calendar date for household registration must be corrected in time." So whether you use the lunar calendar or the solar calendar when you apply for your ID card, the official will recognize it according to the solar calendar.

Extended data:

The date of birth on the ID card should be Gregorian calendar in principle, but the date of birth is lunar calendar. So there is no need to be upset about this, as long as you register strictly according to the age of your ID card when you go to school or work.

China adopts the Gregorian calendar decided by the first CPPCC meeting. That is to say, the date on the ID card and any official documents and civil contracts that are not marked with the year should be regarded as the Gregorian calendar date, which is also commonly known as the solar calendar.

In addition, before the popularization of computers (before 1990s), the birthdays of ID cards were mostly in the lunar calendar. After the popularity of computers (post-90s), the birthdays of ID cards are mostly in the solar calendar.

Therefore, in the past, it was possible for the old people's ID cards to be based on the lunar calendar, especially in rural areas. Generally, they are registered and filled in according to the lunar calendar. Therefore, in some areas, the ID card may be the age of the lunar calendar, but the lunar calendar and the solar calendar are generally calculated according to the solar calendar. Those who are born late declare their accounts according to the medical certificate of birth, and the hospital also fills in according to the solar calendar. So young people nowadays are basically.

References:

Baidu Encyclopedia-Household Registration Management System