July 20 is the 201st day of the year (202nd in leap years) in the Gregorian calendar. There are 164 days remaining until the end of the year.
Events：
70 – Siege of Jerusalem: Titus, son of emperor Vespasian, storms the Fortress of Antonia north of the Temple Mount. The Roman army is drawn into street fights with the Zealots.
911 – Rollo lays siege to Chartres.
1189 – Richard I of England officially invested as Duke of Normandy.
1304 – Wars of Scottish Independence: Fall of Stirling Castle: King Edward I of England takes the stronghold using the War Wolf.
1402 – Ottoman-Timurid Wars: Battle of Ankara: Timur, ruler of Timurid Empire, defeats forces of the Ottoman Empiresultan Bayezid I.
1592 – During the first Japanese invasion of Korea, Japanese forces led by Toyotomi Hideyoshi captured Pyongyang, although they were ultimately unable to hold it.
1738 – Canadian explorer Pierre Gaultier de Varennes et de La Vérendrye reaches the western shore of Lake Michigan.
1799 – Tekle Giyorgis I begins his first of six reigns as Emperor of Ethiopia.
1807 – Nicéphore Niépce is awarded a patent by Napoleon for the Pyréolophore, the world's first internal combustion engine, after it successfully powered a boat upstream on the river Saône in France.
1810 – Citizens of Bogotá, New Granada declare independence from Spain.
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