The King’s Birthday is a public holiday celebrated in Australia to honor the reigning monarch’s birthday. While the actual birthday of King Charles III is on November 14, the holiday in Western Australia is usually observed on last Monday of September or the first Monday of October.

The Sultan of Kelantan's Birthday is an official public holiday in the Malaysian state of Kelantan. It is celebrated annually to honor the reigning Sultan of Kelantan, who is the constitutional monarch and head of state for the region.