I am reminded that today is a public holiday in Sabah to commemorate Malaysia Day. For those of us in Peninsular Malaysia, we have always associated our nation's independence on August 31. August 31 is where the former Malaya gained her independence from the British rule. But the real date Malaysia is birth is September 16, where Malaya, together with Sabah and Sarawak, formed the nation of Malaysia.
Someone commented that if you have several siblings in the family, you celebrate their birthdays individually. You cannot tell the younger sibling, "Sorry, we will not celebrate your birthday. Instead, we will celebrate your birthday together with your elder brother who falls 2 weeks earlier."