Jinnah's Birthday, officially known as Quaid-e-Azam Day; sometimes as Quaid Day, is a public holiday of Pakistan observed annually on 25 December across the country to celebrate the birthday of Muhammad Ali Jinnah, founder of Pakistan, known as Quaid-i-Azam ("Great Leader"). The event is primarily observed by the government and the citizens of the country where national flag is hoisted at major architect structures such as private and public buildings, particularly at the top of Quaid-e-Azam House in Karachi.