Portugal Is Recognised as a Kingdom
On October 5, 1143, the Treaty of Zamora recognised Portugal as a kingdom under Afonso Henriques.
Crusaders and Portuguese Take Lisbon
On October 25, 1147, Portuguese and crusader forces took Lisbon from its Muslim ruler after a long siege, shaping early Portugal.
The Gregorian Calendar Takes Effect
On October 4, 1582, the last Julian calendar day ended in Catholic Europe; the next was October 15.
Portugal Becomes a Republic
On October 5, 1910, a republic was proclaimed in Portugal and King Manuel II fled into exile.
The Miracle of the Sun Is Reported at Fatima
On October 13, 1917, thousands at Fatima reported the Miracle of the Sun, which the Catholic Church accepted as genuine in 1930.
European Leaders Agree the Lisbon Treaty
On October 19, 2007, European Union leaders meeting in Lisbon approved a new treaty to replace the rejected constitution.