22/04 time to improve your King’s day knowledge, the biggest Dutch festivity of them all; 1. 1st celebration of its type was 31/08/1885, Princess’s Day to celebrate the 5th birthday of Princess Wilhelmina. 2. Becoming Queen’s Day in 1890 the date remained 31/08 until 1949 when Queen Juliana ascended the throne, then 30/04 until 2013. 3. The history of the famous ‘vrijmarkts’ (free-markets) goes back to 1980, where instead of offering gifts to the King people can sell their wares.