Do you know why September 16th?
On August 31st 1957, we are known as Malaya and not yet as Malaysia. The history for Malaysia begin when 16th September 1963, Sabah and Sarawak obtained their independence from British and at the same time Malaysia was formed. This is when Malaya, Sabah, Sarawak and Singapore agreed to form a federation with one constitution - the Federal Constitution. However, due to a political reason, Singapore left the constitution.
Malaya + Sabah + Sarawak ----> Malaysia
What do you think? :: I rest my case for now ::