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).
- Hong Kong Observatory, "The Chinese Agricultural Calendar (Nongli)" Archived 2013-10-23 at the Wayback Machine; "The Chinese Calendar" at Calendopaedia.com; retrieved 2013-1-1.
- York, Donald G. and Owen Gingerich. 2011. The Astronomy Revolution: 400 Years of Exploring the Cosmos, p. 281.
- Hong Kong Observatory, "Climatological Information for Lunar New Year (Period: 1947 - 2012)" Archived 2016-03-05 at the Wayback Machine; retrieved 2013-1-1.