This Day in History
Today: September 18, 2026
96
Emperor Domitian is assassinated as a result of a plot by his wife Domitia and two Praetorian prefects. Nerva is then proclaimed as his successor.[1]
324
Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire.[2]
1048
Battle of Kapetron between a combined Byzantine-Georgian army and a Seljuq army.[3]
1066
Norwegian king Harald Hardrada lands with Tostig Godwinson at the mouth of the Humber River and begins his invasion of England.[4]
1180
Philip Augustus becomes king of France at the age of fifteen.[5]
1454
Thirteen Years' War: In the Battle of Chojnice, the Polish army is defeated by the Teutonic knights.
1544
The expedition of Juan Bautista Pastene makes landfall in San Pedro Bay, southern Chile, claiming the territory for Spain.[6]
1618
The twelfth baktun in the Mesoamerican Long Count calendar begins.
1714
George I arrives in Great Britain after becoming king on August 1.
1739
The Treaty of Belgrade is signed, whereby Austria cedes lands south of the Sava and Danube rivers to the Ottoman Empire.
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