What are the main categories of calendars? China lunar calendar belongs to what system? What are the special places?

& ltp> calendar is a method to calculate time in time units such as year, month and day. & lt/p & gt； & ltp> is mainly divided into solar calendar, lunar calendar and yin-yang calendar. The solar calendar is also called the solar calendar, and its calendar year is the tropic of Capricorn. At present, the Gregorian calendar (Gregorian calendar), which is commonly used in the world, is a kind of Gregorian calendar, also called Gregorian calendar for short. The lunar calendar is also called the lunar calendar, or lunar calendar. Its calendar month is lunar month, 12 lunar month, with 30 days for big month and 29 days for small month. The Islamic calendar is one of the lunar calendars. The average calendar year of the Yin-Yang calendar is the tropic year, and the calendar month is the first month of the lunar calendar. Because 12 the first month of the lunar calendar is too different from the tropic year, and the leap month is set in the yin-yang calendar, this calendar is consistent with the moon phase and the periodic movement of the earth around the sun. The lunar calendar in China is a kind of lunar calendar. & lt/p & gt； Other time elements (units) included in the<p> calendar are: