The Republic of China calendar is the method of numbering years currently used in the Republic of China (Taiwan, Penghu, Kinmen, and Matsu). It was used in mainland China from 1912 until the founding of the People's Republic of China in 1949. To find out the ROC year equivalent to any C.E. year, subtract the C.E. year by 1911 (the year of the revolution which led to the formation of the ROC). For example: 2007 C.E. - 1911 = 96th year of the Republic.