Hari Malaysia

Malaysia Day
2011 Malaysia Day celebration at Merdeka Square, Kuala Lumpur
Official name	Hari Malaysia
Observed by	Malaysians
Type	National
Significance	Marks the establishment of the Malaysian federation
Date	16 September
Next time	16 September 2017 (2017-09-16)
Frequency	annual

Malaysia Day is held on 16 September every year to commemorate the establishment of the Malaysian federation on the same date in 1963. It marked the joining together of Malaya, North Borneo, Singapore and Sarawak to form Malaysia.

The formation of the new federation was planned to occur on 1 June 1963, but was later postponed to 31 August 1963, to coincide with the sixth Hari Merdeka. Several issues related to objections of neighbouring Indonesia and the Philippines to the formation of Malaysia delayed the declaration to 16 September of the same year. The postponement was also done to allow the United Nations team time to conduct referendums in North Borneo (now Sabah) and Sarawak regarding the two states participation in a new federation. The formation of Malaysia was made possible with the signing of the International Treaty the Malaysia Agreement 1963 between the United Kingdom, the Federation of Malaya (constituted by 11 states created under the Federation of Malaya Agreement 1957 ; as one component); Sarawak, North Borneo (renamed Sabah) and Singapore of the remaining component States. The Malaysia Agreement 1963 set out the terms and conditions for the component States to be federated under a new constitution into one new nation called Malaysia. It is under this Agreement that the "Malaysia Bill" , (Annexture A), the constitutions of Sarawak, Sabah and Singapore were created by agreement of all the parties (Singapore seceded on 9 August 1965). Through the introduction of the Malaysia Bill to the Malayan Parliament on 9 July 1963, and consent from Tuanku Syed Putra, the Yang di-Pertuan Agong, on 29 August 1963.

Prior to the formation of Malaysia, Sarawak gained its Self-Government Administration on 22 July 1963, while North Borneo (which was renamed Sabah) began Self-Government Administration from the United Kingdom on 31 August 1963, thus coinciding with the sixth anniversary of the Malayan independence.