June 24 is the 175th day of the year according to the Gregorian calendar (176th day in a leap year). There are 190 days left in the year. June 24 is the traditional midsummer day. In Finland and Sweden, however, Midsummer is now always on a Saturday, which falls between June 20 and 26.
Finnish calendar: Jani, Janne, Johannes, Juha, Juhana, Juhani, Juho, Jukka, Jussi
Finnish-Swedish calendar: Johannes, Johan, Jan, Janne, Jean, Jon, John, Johnny, Jens, Ian, Jack
orthodox calendar: Johannes, Juhani, Juha, Eero
Sami calendar: Johanas, Juhán, Johán
1128 – Battle of São Mamede near Guimarães, Portugal. Alfonso I won the battle and the Portuguese celebrate this day as the founding day of their state.
1314 – Battle of Bannockburn: Scottish forces led by Robert I defeat Edward II's forces. Scotland regained its independence.
1340 – In the Hundred Years' War, the naval battle of Sluys took place, where the fleet of King Edward III of England, who sought the French crown, destroyed the fleet of Philip VI of France.
1441 – Eton College founded.
1497 - John Cabot landed in North America in either Newfoundland or Cape Breton as the first European since the Vikings.
1509 – Henry VIII was crowned King of England.
1534 – Jacques Cartier was the first European to discover Prince Edward Island.
1535 – The Anabaptist state in Münster was conquered and dissolved.
1597 – The first Dutch East Indies expedition arrived in Java, in the Sultanate of Banten.
1662 – The Dutch tried to conquer Macau, but failed.
1664 - New Jersey Colony founded.
1692 – Kingston, the current capital of Jamaica, was founded.
1793 – France's first republican constitution is adopted.
1812 – Napoleonic Wars: Napoleon invades Russia.
1859 – Battle of Solferino: Sardinian-French forces defeat the Austrians in northern Italy. The battle was witnessed by Henri Dunant, as a result of which the Geneva Conventions were later accepted and the Red Cross was founded.
1861 – Tennessee was the 11th and last state to secede from the United States (Union).
1894 – The International Olympic Committee decided to hold the Olympic Games every four years.
1901 – The first Pablo Picasso exhibition opened.
1913 – Greece and Serbia annul their alliance with Bulgaria.
1915 - The steamship SS Eastland capsized in Chicago harbor, 844 people were killed.
1916 - Mary Pickford became the first movie star to receive a million dollar contract.
1918 - World War I: the giant cannon Paris Cannon (erroneously called "Fat Berta") began to bombard Paris.
1927 – Finnish flag day was celebrated for the first time in Finland.
1932 – A military coup ends the absolute rule of the King of Siam (Thailand).
1940 – World War II: France and Italy sign an armistice.
1941 – World War II: Germans capture Vilnius, Brest-Litovsk and Kaunas.
1946 - Georges Bidault became Prime Minister of France.
1947 – Aviation: First known UFO sighting. Kenneth Arnold observed nine brilliant saucer-shaped discs while flying over Washington state.
1948 – The blockade of Berlin began. The Soviet Union blocked land travel between the West and West Berlin.
1963 – The United Kingdom granted Zanzibar self-government.
1974 – The barcode label ("Universal Product Code", UPC - EAN in Europe) was used for the first time to pay for purchases in a supermarket.
1975 – Aviation: An Eastern Airlines Boeing 727 crashes at John F. Kennedy Airport in New York, killing 113.
1983 - Aviation: Sally Ride, the first US female astronaut, returned to Earth from her flight.
1983 – Jasse