What is what national day is may 17?

May 17th is celebrated as Norwegian Constitution Day, commonly referred to as Syttende Mai. This national holiday commemorates the signing of the Norwegian Constitution in 1814, declaring the country as an independent nation. It is a day of patriotic pride, marked by parades, flag-waving, traditional folk costumes, and various festivities across the country. May 17th is a significant day for Norwegians, symbolizing their freedom and democracy.