Koningsdag or King's Day is a national holiday in the Kingdom of the Netherlands. Celebrated on 27 April, the date marks the birth of King Willem-Alexander. When the Dutch monarch is female, the holiday is known as Koninginnedag or Queen's Day and, under Queen Beatrix until 2013, was celebrated on 30 April. She prolonged the tradition that was born under her mother’s reign: Queen Juliana’s birthday was on April 30th.
People dressed in orange on the canals of Amsterdam in 2010
Military parade in Arnhem, Koninginnedag 1958
Queen Beatrix speaks with the mayor of The Hague, Wim Deetman in Scheveningen, Koninginnedag 2005.
Queen Beatrix and her son and heir Willem-Alexander, Prince of Orange (waving) visit Woudrichem in 2007
Beatrix of the Netherlands
Beatrix is a member of the Dutch royal house who reigned as Queen of the Netherlands from 1980 until her abdication in 2013.
Beatrix in 2015
Beatrix and Irene on board the Piet Hein in 1946
Princess Beatrix and Queen Juliana in 1960
Henck Arron, Princess Beatrix, and Johan Ferrier during the independence ceremony of Suriname in 1975