Is leap month an extra month? How to calculate leap month?

1. In China Lunar New Year, a year with a leap month is called a leap year. The general year is 12 months, 354 or 355 days, and the leap year is 13 months, 383 or 384 days. As a kind of lunar calendar, the number of days in a month depends on the monthly loss, and the time in a year is 65438. In order to close the earth's cycle around the sun, which is the tropic of cancer.

2. leap month is a way to set leap in the calendar, especially in the Chinese calendar (also known as the lunar calendar), one month is added every leap year. If one day is added to the leap month in the solar calendar in February, it will be 29 days, and if one month is added to the leap month in the lunar calendar, a year will be 13 months.

3. The lunar calendar refers to the calendar commonly used in ancient China, that is, the lunar calendar, which is actually a combination of yin and yang. It takes the time interval between two new moons as one month, which is the so-called "Shuowangyue"; It takes a year for the earth to make a revolution around the sun, which is called the "year of the tropic".