April 30th is the 120th day of the year (121st in leap years) in the Gregorian calendar. There are 245 days remaining until the end of the year.
313 – By defeating the armies of his rival Maximinus II, Roman emperor Licinius unified the eastern half of the empire under his rule.
1598 – King Henry IV of France issued the Edict of Nantes, granting freedom of religion to the Huguenots.
1803 – The United States purchased France’s claim to the Louisiana Territory for 78 million francs, or less than US$.03 per acre ($.07/ha).
1943 – Second World War: The Royal Navy submarine HMS Seraph began Operation Mincemeat to deceive Germany about the upcoming invasion of Sicily.
2009 – A gunman went on a shooting spree at the Azerbaijan State Oil Academy, a public university in Baku, killing 12 people before committing suicide.
Singer Willie Nelson turns 85
Director Jane Campion turns 64
Comedian Keith Lemon turns 45
Actress Kristen Dunst turns 36
Wonder Woman Star Gal Gadot turns 33
Glee Actress Dianna Agron turns 32