Chinese calendar
The Chinese calendar, also known as the "agriculture calendar" (農曆/农历), is a lunisolar calendar (yinyangli). It was used until 1912 when the Gregorian calendar was adopted. This is a system of organizing days for social, religious, commercial, or administrative purposes.  It was developed in part from a lunar calendar (陰曆 yinli) and in part from a solar calendar (陽曆 yangli).