Birthdays are celebrated in the lunar or solar calendar.

The so-called lunar calendar is the traditional Chinese lunar calendar. It is a calendar created by the ancestors of the Chinese nation, which has been circulated for thousands of years and is a common way for our ancestors to celebrate their birthdays. Of course, the most important reason is that in ancient China, there was no solar calendar, that is, the calendar system.

1On September 27th, 949, with the approval of the first plenary session of China People's Political Consultative Conference, the newly established People's Republic of China (PRC) adopted the Gregorian calendar and AD calendar commonly used in most countries in the world. It should be said that celebrating the lunar birthday is an important part of Chinese traditional history and culture, and it also has a relatively important position in people's minds, especially the older generation, who generally think that the lunar calendar is formal and formal.

The difference between solar calendar and lunar calendar:

The Gregorian calendar is also an international Gregorian calendar. The Gregorian calendar is customized for one year, totaling 365 days, 5 hours, 48 minutes and 46 seconds. Only 365-day integers are calculated in the average year, excluding mantissa; A year is divided into 12 months, big month 3 1 day, small month 30 days, and February only has 28 days. The mantissa of four years totals 1 day, which is added to February of the fourth year. This year is called leap year, so February in leap year has 29 days.

The lunar calendar is customized to have a full moon once a month, a total of 29 and a half days. For the convenience of calculation, the big month is customized for 30 days, and the small month is customized for 29 days. In 12 months of a year, large months and small months are generally arranged alternately. The lunar calendar has only about 354 days a year. Generally speaking, there is no difference between a normal year and a leap year.