On April 23

A landslide triggered the collapse of a jade mine in Hpakant, Myanmar, resulting in six confirmed deaths and presumed dozens more.

A man intentionally struck pedestrians with a van on Yonge Street in Toronto, Canada, leading to 11 deaths.

Arizona governor Jan Brewer signed into law the controversial anti–illegal immigration bill SB 1070, much of which was later struck down by the U.S. Supreme Court.

The gamma-ray burst GRB 090423 was detected coming from the most distant astronomical object of any kind known at the time.

Blair Peach, a New Zealand teacher, was fatally injured while taking part in an Anti-Nazi League demonstration against a National Front election meeting in Southall, London.

The American band the Ramones released their debut album, which became highly influential on the emerging punk rock movement.

The Rolling Stones released Sticky Fingers, the first album on their own label, Rolling Stones Records.

Batting for the Milwaukee Braves against Vic Raschi of the St. Louis Cardinals, Hank Aaron hit the first of his 755 home runs in Major League Baseball.

American journalist William N. Oatis was arrested for espionage by the communist government of Czechoslovakia.

World War II: The US Army's 90th Infantry Division liberated Flossenbürg concentration camp (pictured) in Germany, freeing 1,500 prisoners.

Second World War: In retaliation for the Royal Air Force's bombing of Lübeck, the Luftwaffe began a series of air raids across England, beginning with Exeter.

Cardiff City defeated Arsenal 1–0 in the FA Cup final (match programme pictured) in the only time the FA Cup has been won by a non-English team.

The Grand National Assembly of Turkey, the country's unicameral legislature, first met in Ankara in the midst of the Turkish War of Independence.

First World War: The British Royal Navy launched unsuccessful raids on Ostend and Zeebrugge in German-occupied Belgium.

Chilean Civil War: The armored frigate Blanco Encalada was sunk at the Battle of Caldera Bay, the first ironclad warship lost to a self-propelled torpedo.

Johann Sebastian Bach leads the first performance of his cantata Du Hirte Israel, höre, BWV 104, illustrating the topic of the Good Shepherd in pastoral music.

Succeeding Charles II, his late brother, James II was crowned King of England, becoming last Catholic to hold the title.

Charles II was crowned King of England, Scotland and Ireland at Westminster Abbey.

Ottoman wars in Europe: Albanian leader Skanderbeg defeated an Ottoman army under Ballaban Badera to raise the siege of Krujë.

Albanian commander Skanderbeg entered Krujë, breaking a 10-month siege by Ottoman forces.