On 5 September 1945, Sri Sultan Hamengkubuwono IX and Paku Alam VIII states joined the Unitary State of Republic of Indonesia. To recall the historical moment that, on 5 September, elements of the pro-establishment people of Yogyakarta will submit documents to the Amanah Rakyat Yogyakarta Sri Sultan HB X in the performances of Yogyakarta Kingdom.