The National Day of the Republic of China, also referred to as Double Ten Day or Double Tenth Day, is a public holiday on 10 October, now held annually as national day in the Republic of China (ROC, commonly known as Taiwan). It commemorates the start of the Wuchang Uprising on 10 October 1911 which ultimately led to the establishment of the Republic of China on 1 January 1912, and the collapse of the imperial Qing dynasty, ending 2,133 years of imperial rule of China since the Qin dynasty. The day was once held as public holiday in mainland China during the Mainland Period of the ROC before 1949. The subsequent People's Republic of China continues to observe the Anniversary of the Xinhai Revolution at the same date but not as a public holiday, which emphasize more on its revolutionary characteristics as commemoration of a historical event rather than celebration to the founding of the Republic of China.
Following the consequence of the Chinese Civil War, the ROC government lost control of mainland China to the Chinese Communist Party and retreated to the island of Taiwan in December 1949. The National Day is now mainly celebrated in Taiwan Area, thus the name “Taiwan National Day” is also used by some groups, but it is also celebrated by many overseas Chinese communities.