Queen's day, or Koninginnedag as we call it, is a national holiday in the Netherlands. On this day we celebrate the birthday of the Queen of the Netherlands. Although it's original the birthday of Queen Juliana (the mother of Queen Beatrix), not of Queen Beatrix, we celebrate her birthday on 30 April. Our Queen Beatrix birthday is really on the 31th January, but the winter isn't the time to party outside. Because of this Queen Beatrix officially celebrates her birthday on 30 April, so we can party with (hopefully) better weather! Isn't our Queen lovely?