The birthday of Haakon, Crown Prince of Norway, is celebrated every July 20 in Norway. This day is marked as an official flag flying day, honoring the members of the Norwegian Royal House, including the king, queen, heir apparent, and their immediate family. Born on July 20, 1973, Prince Haakon Magnus became Crown Prince when his father ascended the throne in 1991. He married Mette-Marit Tjessem Høiby in 2001, a choice that faced some public disapproval due to her status as a commoner and single mother. Crown Prince Haakon served as Regent of Norway during periods of his father's health issues and founded the non-political organization Global Dignity in 2006. The celebration of his birthday reflects the royal family's significance in Norwegian culture and tradition.