The word sekaten itself is derived from syahadatain or shahada, the first requirement for converting into Islamic faith. Traditionally it is played once per year, on the occasion of Mawlid, Muhammad’s birthday, for the week from the 6-12 of the month of Mulud (the third month of the Javanese calendar, corresponding to the Islamic Rabi’ al-awwal).(http://id.wikipedia.org/wiki/Keraton_Ngayogyakarta_Hadiningrat#Sekaten)

The Ceremony of Miyos Gongso is carry out of the Gamelan Kyai Nogo wilogo and Kyai Guntur Madu to be placed in Mosque Gede. This ceremony is held once every eight years, which known as Grebeg Tahun Dal in Sekaten Celebration of Kraton Ngayogyakarta Hadiningrat. Date: Feb 19, 2010 Time: 23.00