In Laos, Chinese and Vietnamese people (who represent a big community) are celebrating this date.

Chinese New Year or Spring Festival is the most important of the traditional Chinese holidays. It is often called the Lunar New Year, especially by people in mainland China and Taiwan. The festival traditionally begins on the first day of the first month in the Chinese calendar and ends on the 15th; this day is called Lantern Festival.

Chinese New Year’s Eve is known as Chúxī. It literally means "Year-pass Eve".

Chinese New Year is the longest and most important festivity in the Lunar Calendar. The origin of Chinese New Year is itself centuries old and gains significance because of several myths and traditions. Ancient Chinese New Year is a reflection on how the people behaved and what they believed in the most.

From Wikipedia