Which countries use the lunar calendar?

It is used by several countries deeply influenced by China culture, mainly Japanese, Korean, Vietnamese, Malaysian, Singaporean, Mongolian, Myanmar and other countries.

The lunar calendar is one of the traditional calendars in China, also known as the old calendar, the Han calendar and the ancient calendar. After the revolution of 1911, it was changed to the western solar calendar (Gregorian calendar), while the modern lunar calendar belongs to the combination of yin and yang.

In China's traditional calendar, the lunar calendar mainly refers to the calendar arranged according to the periodic changes of the phases of the moon, that is, the calendar that determines the calendar months and twelve calendar months in a year based on the first month of the lunar calendar. During the development and evolution of the calendar, it combined with the 24 solar terms in the trunk and branch calendars to form the lunar calendar (Han calendar), which was used to guide agricultural production scientifically.

Although the lunar calendar and the lunar calendar are usually called the ancient calendar, the Han calendar and the old calendar, there are differences between them. The traditional lunar calendar (Han calendar) is actually a combination of yin and yang, not the traditional lunar calendar.

algorithm

Lunar calendar, its calculation method is: one week of lunar eclipse is a month, lasting 29 days 12 hours, 44 minutes and 2.8 seconds, and 12 weeks of lunar eclipse is a year, lasting 354 days, 8 hours, 48 minutes and 33.6 seconds. In 12 months every year, there are 6 odd-numbered months (i.e. 1, 3, 5, 7, 9, 1 1) as "big construction", and each month is 30 days; Six even-numbered months (February, April, June, August, 10, 65438+ February) are "Xiao Jian", and each month is 29 days; In leap year, the month of 65438+ February will be changed to 30 days.

The calendar takes 30 years as a cycle, and the 2nd, 5th, 7th, 10, 13, 16, 18, 2 1, 24th, 26th and 29th years in each cycle are/kloc-. Therefore, the average annual time is 354 days, 8 hours and 48 minutes.

According to the actual number of days over the years, it is about 10 days, which is 2 1 hour and 1 minute less than the return, and the difference between the return year of 2.7 and the return year of 32.6 is one year. In this calendar, the calculation of day and night begins at sunset and ends at sunset the next day, which is usually called before the night trip, that is, the night is before and the day is after, forming a day.