June 27

• June 27, 1580
  Fernando Álvarez de Toledo, the Duke of Alba, invade Portugal to put it under Spain's rule, ending the struggle for the throne of Portugal after the death of young King Sebastian I
• June 27, 1693
  The first woman's magazine "The Ladies' Mercury" published in London
• June 27, 1743
  King George of the English defeat the French at Dettingen, Bavaria during War of the Austrian Succession
• June 27, 1806
  Buenos Aires is captured by British
• June 27, 1839
  African slaves, kidnapped in Sierra Leone and sold into slavery in Cuba, revolt on the board of the Spanish coasting vessel La Amistad, transferring them from Cuba to Porta Prince as a load, then kill the captain, and order the crew back to Africa
• June 27, 1871
  The yen becomes the new form of currency in Japan during period of modernisation in Japan
• June 27, 1967
  The world's first automated teller machine is installed in Enfield, London
• June 27, 1977
  Djibouti gains independence from France, formerly the French Territory of the Afars and Issas