Crown Princess Mette-Marit's Day is celebrated every August 19 in Norway to honor the birthday of the Crown Princess. Norwegians express their admiration by flying the national flag and organizing festive gatherings. The day is marked by various cultural activities, including themed cakes from local bakeries and special promotions in shops featuring Norwegian-themed souvenirs. Restaurants may create menus highlighting traditional Norwegian dishes, while individuals are encouraged to wear traditional clothing and share their appreciation online. The celebration reflects national pride and recognition of Mette-Marit's contributions to social justice, mental health, and literature.