45 BC Julius Caesar's calendar reform: 365 days in 12 months with leap years every four years was introduced.
43 BC Cicero delivered his Fifth Philippic (fifth of a series of speeches condemning Mark Antony) in the Roman Senate.
27 BC Octavian became the first emperor of Rome and took the name Caesar Augustus. 4
Gladiator04 Last gladiator competition in Rome.
The Borgias1431 Pope Alexander VI (Rodrigo Borgia) was born.
1600 Scotland began its numbered year on January 1 instead of March 25.
1651 Charles II was crowned King of Scotland.
1801 The Act of Union between Great Britain and Ireland created the United Kingdom.