1 June and the Controversy Over Pancasila's Founding Date

Since President Joko Widodo’s administration designated 1 June as Pancasila’s Founding Day via Presidential Decree No. 24 of 2016, Indonesia has annually commemorated the occasion as a national holiday. The decree aimed to strengthen Pancasila’s ideological foundation and honour the nation’s founders. However, academic and historical debates persist over whether 1 June truly merits being recognised as Pancasila’s founding date. The controversy is not new. Disputes over who conceived, formulated, or proposed Pancasila have persisted since the New Order era. One catalyst was the 1971 publication of Nugroho Notosusanto’s book, ‘The Authentic Proclamation Text and Authentic Pancasila Formulation’. The book outlined four key milestones in Pancasila’s formulation: Muhammad Yamin’s speech on 29 May 1945, Sukarno’s address on 1 June 1945, the Jakarta Charter on 22 June 1945, and the enactment of the 1945 Constitution’s preamble on 18 August 1945. Historical records show that on 29 May 1945, Muhammad Yamin proposed five foundational state principles during a BPUPKI session. Interestingly, Yamin’s proposed framework closely resembles the Pancasila known today. Two days later, on 1 June 1945, Sukarno delivered a landmark speech that introduced the term ‘Pancasila’. In his address, Sukarno proposed five state principles: Indonesian Nationalism, Internationalism or Humanitarianism, Consensus or Democracy, Social Welfare, and Belief in a Culturally-Informed Divinity. He also coined the term ‘Pancasila’ for these principles, which the session adopted as the official designation for the nascent state philosophy. This is where the core controversy lies. If commemorating the term’s origin, 1 June has solid historical grounds. However, if referring to the final Pancasila formulation in the 1945 Constitution’s preamble, the date becomes contentious. The principles Sukarno presented on 1 June differ both systematically and substantively from the final version recognised today.