In 2013 it was announced that as of 2014, Queen’s Day in the Netherlands would become King’s Day, to be celebrated on April 27 rather than on April 30. This announcement followed the queen’s abdication from the throne in favor of her eldest son Willem Alexander, whose birthday is on April 27. http://www.timeanddate.com/holidays/netherlands/2014
http://www.timeanddate.com/holidays/netherlands/2014