The holiday is celebrated on the anniversary of the opening day of the first Indonesian Women Congress ("Kongres Perempuan Indonesia"), which was held from 22 to 25 December 1928. The Congress took place in a building called Dalem Jayadipuran, which now serves as the office of the Center of History and Traditional Values Preservation ("Balai Pelestarian Sejarah dan Nilai Tradisional") in Brigjen Katamso Street, Yogyakarta. The Congress was attended by 30 feminist organizations from 12 cities in Java and Sumatra. In Indonesia, feminist organizations have existed since 1912, inspired by Indonesian heroines of the 19th century, e.g., Kartini, Martha Christina Tiahahu, Cut Nyak Meutia, Maria Walanda Maramis, Dewi Sartika, Nyai Ahmad Dahlan, Rasuna Said, etc. The Congress intended to improve women's rights in education and marriage.