The Sarawak Governor's Birthday is observed in Sarawak, Malaysia, every second Saturday of October. This holiday celebrates the official birthday of the governor, who is appointed by the Supreme Head of Malaysia, as Sarawak does not have a hereditary ruler. The tradition of celebrating an official birthday for state governors in Malaysia stems from the fact that their actual birthdays may vary, and this date remains constant even with changes in officeholders. Sarawak, located in northeast Borneo, has a rich history, having been governed by the Brooke family from 1841 to 1941 before becoming a Crown Colony and later joining Malaysia in 1963. The current governor, Abdul Taib Mahmud, has been in office since March 2014. The holiday reflects the state's unique governance structure and its historical context within Malaysia.