Jinnah's birthday, officially Quaid-e-Azam Day and sometimes known as Quaid Day, is a public holiday in Pakistan observed annually on 25 December to celebrate the birthday of the founder of Pakistan, Muhammad Ali Jinnah, known as Quaid-i-Azam. A major holiday, commemorations for Jinnah began during his lifetime in 1942, and have continued ever since. The event is primarily observed by the government and the citizens of the country where the national flag is hoisted at major architectural structures such as private and public buildings, particularly at the top of Quaid-e-Azam House in Karachi.