Every year, on 1 December, Restoration Day, the Duke gives his annual speech in honour of the Portuguese Restoration at the dinner of the Forty Conspirators. It was on 1 December 1640 that João II, Duke of Braganza, an ancestor of Duarte Pio, deposed the Portuguese House of Habsburg, installed the House of Braganza as the reigning house of Portugal, and restored sovereign rule to the Portugal. In his speeches, the Duke reflects on the historical significance of the date, events of the previous year, and the road ahead for both Portugal in general and the monarchist cause. In 2012, Restoration Day ceased to be an official holiday of the Portuguese state, prompting Duarte Pio to speak out against the action, stating that extinction of the official holiday "devalues the day which should unite the Portuguese".