The Sultan's Birthday is a significant holiday in Brunei, celebrated annually on July 15th. This day commemorates the birth of the Sultan of Brunei, Sultan Hassanal Bolkiah, who was born in 1946. The event is notable because Sultan Hassanal Bolkiah is not just the ruler of Brunei, but also holds the title as the world's second-longest reigning current monarch, making his birthday a day of great national pride and significance.

The Sultan's birthday celebration entails a series of activities spread across the entire nation. Special prayers are held in mosques, grand receptions are organized in palaces, and parades are held in major cities. The grandeur and liveliness of the celebration reflect the people's love and respect for their monarch. The Sultan takes this opportunity to meet with people, listen to their concerns, and work towards the country's prosperity.

Moreover, in line with the country’s rich tradition, military displays, fireworks, and cultural performances are also common during this time. Schools, offices and other businesses are often closed to allow citizens to engage in the celebration. Indeed, the Sultan's Birthday is one of the most eagerly awaited public holidays in Brunei. For Bruneians, it is not just a national holiday but a representation of the sovereign's commitment towards the well-being of his people.