National Space Day (Hari Keantariksaan Nasional) is observed in Indonesia every August 6, commemorating the promulgation of the Space Act of 2013, which outlines the national space policy. The celebration has its roots in Indonesia's space exploration history, beginning in 1962 with the establishment of the Aeronautics Committee and the subsequent launch of the Initial Scientific and Military Rocket Project (PRIMA). The National Institution of Aeronautics and Space (LAPAN) was founded in 1963, marking Indonesia's entry into space activities, and in 1964, the country became the third in Asia to launch a sounding rocket. The day serves to thank employees of the Indonesian Space Agency (INASA) and the Research Organization for Aeronautics and Space (ORPA) for their contributions and to encourage public engagement with space science. Schools, universities, and planetariums across Indonesia typically organize astronomy-related activities to celebrate this occasion.