Is the birthday on the ID card solar or lunar?

The date of birth on the ID card should be Gregorian calendar (solar 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 used the Lunar Date when issuing birth certificates at the request of their families, which led the public security organs to register the birth date as the Lunar Date when registering their household registration.

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

Extended data:

In principle, the date of birth on the ID card should be the Gregorian calendar, but the date of birth is the lunar calendar. Therefore, there is no need to feel uneasy about this matter, as long as you register in strict accordance with the age of your ID card when you go to school or work.

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

In addition, before the popularization of computers (before the 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 old people's ID cards to be based on the lunar calendar, especially those from rural areas. Generally speaking, they are registered and filled in according to the lunar calendar. Therefore, in some areas, the age on the ID card may be the lunar calendar, but the lunar calendar and the solar calendar are generally calculated according to the solar calendar. Late-born people declare their household registration according to the medical certificate of birth, and the hospital also fills it out according to the solar calendar. So young people nowadays are basically.

References:

Baidu Encyclopedia-Household Registration Management System