International Dance Day – Celebrated every year on April 29, this day was introduced by the International Dance Council to promote the importance of dance and its universality.
World Veterinary Day – Observed on the last Saturday in April, this day highlights the important role played by veterinarians in protecting the health of animals and humans alike.
International Noise Awareness Day – This day aims to raise awareness about the harmful effects of excessive noise on health and well-being.
Day of Remembrance for all Victims of Chemical Warfare – This day is observed to pay tribute to those who have suffered as a result of chemical warfare and to promote the elimination of chemical weapons.
National Shrimp Scampi Day – A food holiday celebrated in the United States to honor the popular Italian-American dish of shrimp scampi.
Greenery Day (Japan) – A national holiday in Japan that commemorates the birthday of Emperor Hirohito, who was an avid botanist and lover of nature.
1429 – Joan of Arc arrived at the siege of Orleans, France, and lifted the siege.
1770 – Captain James Cook landed at Botany Bay, Australia.
1862 – New Orleans fell to Union forces during the American Civil War.
1945 – American troops liberated the Dachau concentration camp in Germany.
1975 – The Vietnam War ended with the fall of Saigon to North Vietnamese forces.
1986 – The Chernobyl disaster occurred, causing a nuclear meltdown in the Soviet Union.
2011 – The wedding of Prince William and Catherine Middleton took place at Westminster Abbey in London, England.