July 25 is the 206th day of the year according to the Gregorian calendar (207th day in a leap year). There are 159 days left in the year. According to the Finnish neo-tradition, on July 25, "Jaakko throws a cold stone into the water" (Jaakko's name day). The day has previously been called the day of thunder.
Finnish calendar: Jaakko, Jaakob, Jimi, Jaakoppi
Finnish-Swedish calendar: Jakob, Jim, Jimmy
orthodox calendar: Anna, Anni, Piia, Ruusa
Sami calendar: Jágát, Jáhkot, Jágo, Jáhko, Járre
in older calendars: Jacobina, Jacobus
306 – Constantine I's troops proclaim him Roman Emperor.
1139 – Battle of Ourique: the most famous victory over the Muslims by Alfonso, who later took the title of king (rex) of Portugal.
1261 – Nicaean forces led by Michael VIII Palaiologos capture Constantinople, enabling the re-creation of the Byzantine Empire.
1536 – Sebastián de Belalcázar founded the city of Cali in search of Eldorado.
1547 – Henry II was crowned King of France.
1567 - Don Diego de Losada founded Santiago de Leon de Caracas, present-day Caracas, the capital of Venezuela.
1593 - King Henry IV of France publicly converted from Protestantism to Catholicism.
1603 - King James VI of Scotland is crowned as the first king of Great Britain as James I.
1755 – In Halifax, Canada, it was decided to deport the Acadians. Thousands of Acadians were sent to British colonies in America, France and England. Some later moved to Louisiana and New Brunswick.
1797 - Horatio Nelson lost more than 300 men and his right hand in a failed attempt to capture the Spanish island of Tenerife.
1799 – Napoleonic forces defeat 10,000 Ottomans under Mustafa Pasha at Abukir, Egypt.
1861 – American Civil War: The Crittenden-Johnson Act passed by the US Congress states that the war was fought to preserve the Union (federal state) and not to end slavery.
1866 - A new military rank was created based on a law passed by the US Congress ("General of the Army", which is the highest military rank in the army; today it is called "Five-star general"). This highest military honor was first awarded to Lieutenant General Ulysses S. Grant.
1868 – Wyoming became a US territory.
1897 - Writer Jack London set out on a sailing trip to take part in the Klondike Gold Rush, where he wrote his first successful accounts.
1898 – Spanish-American War: The US occupation of Puerto Rico begins with the landing of US troops in Guánica Bay.
1909 - Aviation: Louis Blériot became the first person to fly across the English Channel in a heavier-than-air aircraft (Calais to Dover in 37 minutes).
1916 – The battle of Schmarden, in which a pioneer company of Finnish jaegers (Jääkäritataljoona 27) who served in the German army participated.
1919 – The first presidential election was held in Finland. K. J. Ståhlberg of the Progressive Party was elected with 143 votes in the election organized by the Parliament. General Mannerheim received 50 votes.
1920 – Telecommunications: first two-way radio transmission across the Atlantic.
1925 – TASS news agency was founded.
1934 – Austrian Chancellor Engelbert Dollfuss is assassinated by the Nazis in a failed coup attempt.
1940 - General Henri Guisan, Commander-in-Chief of the Swiss Army, ordered the army to resist a possible German invasion and declared surrender illegal.
1943 – World War II: Threatened by the defeat of Italy, the Fascist Grand Council transfers supreme command of the army to King Viktor Emanuel III. The king dismissed Benito Mussolini as prime minister and appointed Pietro Badoglio as the new prime minister.
1946 – Operation Crossroads: An atomic bomb (codenamed Baker) explodes