Chinese New Year, also known as Spring Festival in China, is the most important traditional holiday in China. Like Christmas/New Year in other countries, Chinese New Year is simply a much-needed winter holiday at an auspicious time. The date for Chinese New Year changes each year. It always falls between January 21 and February 20, determined by the Chinese lunar calendar.

Source: https://www.chinahighlights.com/travelguide/festivals/spring-festival/chinese-zodiac-years-of-2011-to-2020.htm