Chinese New Year is celebrated on February 19, 2015. It is the most important of the traditional Chinese holidays. In China, it is also known as the Spring Festival, the literal translation of the modern Chinese name. Chinese New Year is observed as a public holiday in a number of countries and territories where a sizable Chinese population resides.
Chinese New Year celebrations traditionally ran from Chinese New Year's Day itself, the first day of the first month of the Chinese calendar, to the Lantern Festival on the 15th day of the first month, making the festival the longest in the Chinese calendar. Because the Chinese calendar is lunisolar, the Chinese New Year is often referred to as the "Lunar New Year".
Within China, regional customs and traditions concerning the celebration of the Chinese new year vary widely. Often, the evening preceding Chinese New Year's Day is an occasion for Chinese families to gather for the annual reunion dinner. It is also traditional for every family to thoroughly cleanse the house, in order to sweep away any ill-fortune and to make way for good incoming luck.
Windows and doors will be decorated with red colour paper-cuts and couplets with popular themes of "good fortune" or "happiness", "wealth", and "longevity." Other activities include lighting firecrackers and giving money in red paper envelopes. (With material from: Wikipedia)