July 25 is the 206th day of the year in the Gregorian calendar, 207th when it is a leap year, then there are 159 left.
Its equivalent was usually 7 Thermidor of the French Republican/Revolutionary calendar, officially referred to as Mugwort Day (in botany).
July 24 - July 25 - July 26
306: Roman legions proclaim Constantine emperor.
315: the Arch of Constantine is inaugurated in his honor.
1120: a fire in which 1,200 people are killed destroys the Carolingian nave of the Benedictine abbey of Sainte-Marie-Madeleine in Vézelay.
1137: marriage of King Louis VII of France, known as the Younger, and Eleanor of Aquitaine.
1139: the son Alfonso Enriques future Alfonso I of Portugal of Henry of Burgundy defeats Muslims at the battle of Ourique, declares himself independent of the kingdom of Leon and takes the title of king of Portugal (birth of independent Portugal from the Moors and the neighbor Castilian from Spain).
1261: Alexis Strategopoulos reconquers Constantinople, ending the Eastern Latin Empire.
1300: after having been crowned king of Bohemia in 1297, in the cathedral of Prague, Wenceslas II is crowned king of Poland, in that of Gniezno.
Charles Quint, again at war against François I of France, crossed the Var towards Fréjus, along the Mediterranean coast.
Sebastián de Belalcázar founds the city of Cali, Colombia.
1554: marriage of Philip II of Spain and Mary I of England.
1567: Diego de Losada founds Caracas, Venezuela.
1593: Henri IV of France abjures Protestantism, and converts to Catholicism for the second time.
1630: Louis XIII of France, having left Saint-Jean-de-Maurienne where he left Richelieu in military operations towards the north of Italy, goes back to Lyon to find the two queens, his mother Maria and his wife Ana, (see August 22).
1772: first division (dismemberment) of Poland, between Russia, Austria and Prussia: by the Treaty of Saint Petersburg, the Tsarina Catherine II agrees with the King of Prussia Frederick II and the Archduchess of Austria Marie-Thérèse, to deprive Poland of a third of its territory.
1792: Brunswick manifesto.
1797: Spanish victory, at the Battle of Santa Cruz de Tenerife, during the First Coalition.
1799: Battle of Aboukir, during the Egyptian campaign.
1814: British victory at the Battle of Lundy's Lane in the Anglo-American War of 1812.
1898 and 1952: events related to Puerto Rico commemorated below in fine.
1909: Louis Blériot crosses the English Channel
1921: creation of the Belgian-Luxembourg economic union.
1934: Austrian Chancellor Engelbert Dollfuss is assassinated by Austrian Nazis.
1940: Henri Guisan, at the head of the Swiss army, gives the Rütli report.
1943: meeting of the Fascist Grand Council; Mussolini, put in a minority, after the vote on the agenda presented by Dino Grandi, presents his resignation as President of the Council to the King, who has him arrested later in the day by the carabinieri...
1944: launch of Operation Spring, during the Battle of Normandy (still World War II).
1946: Baker explosion, on Bikini Atoll, during Operation Crossroads.
1957: proclamation of the Republic of Tunisia by Habib Bourguiba.
Bosnian Serb leaders Radovan Karadžić and Ratko Mladić are indicted by the International Criminal Tribunal for the former Yugoslavia (T.P.I.) for genocide and crimes against humanity.
attack at Saint-Michel RER B station
1996: the Burundian army, with a Tutsi majority, overthrows the coalition government, and places the former president Pierre Buyoya, a Tutsi soldier,