Queen Victoria replaced him. Salisbury remained prime minister for the remainder of Victoria's reign. On 23 September 1896, Victoria surpassed her grandfather George III as the longest-reigning monarch in British history. The Queen requested that any special celebrations be delayed until 1897, to coincide with her Diamond Jubilee, which was made a festival of the British Empire at the suggestion of the Colonial Secretary, Joseph Chamberlain. The prime ministers of all the self-governing Dominions were invited to London for the festivities. One reason for including the prime ministers of the Dominions and excluding foreign heads of state was to avoid having to
Diamond jubilee in special importance despite not being called a "diamond jubilee." Monarchs such as the Kangxi and Qianlong emperors of China, and Hirohito of emperor of Japan held celebrations for their sixtieth year of reign, as did King Bhumibol Adulyadej the King of Thailand on 10 June 2006. National governments also mark their sixtieth anniversary as diamond jubilees, as did the Republic of Korea in 2005 and the People's Republic of China in 2009. In South Asia, the term is also used for certain 100-week anniversaries. For instance, in both India and Pakistan, a diamond jubilee film is one shown in