1143 King Alfonso VII of Leon recognises Portugal as a Kingdom.
1325 Alfonso IV becomes King of Portugal.
1498 Vasco da Gama decides to depart Calicut and return to Portugal.
1520 After navigating through the South American strait, three ships under the command of Portuguese explorer Ferdinand Magellan reach the Pacific Ocean, becoming the first Europeans to sail from the Atlantic Ocean to the Pacific.
1529 Treaty of Saragossa divides the eastern hemisphere between Spain and Portugal along a line 297.5 leagues or 17° east of the Moluccas.
1668 Spain recognizes Portugal as an independent nation.
1707 John V is crowned King of Portugal.
1803 Colégio Militar is founded in Portugal by Colonel Teixeira Rebello.
1808 Battle of Vimeiro: British and Portuguese forces led by General Arthur Wellesley defeat French force under Major-General Jean-Andoche Junot near the village of Vimeiro, Portugal, the first Anglo-Portuguese victory of the Peninsular War.
1820 Constitutionalist revolution in Lisbon, Portugal.
1825 Portugal recognizes the Independence of Brazil.
1887 Coimbra Academic Association, the oldest students' union in Portugal, is founded.
1973 Guinea-Bissau declares its independence from Portugal.
1974 Portugal and the Soviet Union establish diplomatic relations.
1974 Guinea-Bissau gains independence from Portugal.
1975 Cape Verde gains its independence from Portugal.
1975 São Tomé and Príncipe declare independence from Portugal.
1975 Formation of a military triumvirate in Portugal.
1975 East Timor declares its independence from Portugal.
1976 Portugal grants autonomy to Madeira.
1987 Portugal and the People's Republic of China sign an agreement in which Macau would be returned to China in 1999.
2001 Hintze Ribeiro disaster, a bridge collapses in northern Portugal, killing up to 70 people.
2002 The independence of East Timor is recognized by Portugal, formally ending 23 years of Indonesian rule and 3 years of provisional UN administration (Portugal itself is the former colonizer of East Timor until 1976).