- 1822: The First siege of Mesolonghi begins as Kutahye pasha's army encircle the city.
- 1912: During the First Balkan War, the Greek Army crosses the Axios River and advances towards Thessaloniki.
- 1912: The Battle of Pente Pigadia commences during the First Balkan War.
- 1939: It is announced that the population of Greece, as of the end of 1938, is 7,107,472.
- 1941: German troops execute 165 men in Mesovouno, Kozani prefecture.
- 1970: Christos Papanikolaou breaks the world record in the pole vault with a jump of 5.49m.
- 1982: Dimitrios Beis is elected Mayor of Athens.