Holidays Calendar for April 20, 2016

Administrative Professionals' Day, also known as Secretaries Day or Admin Day, is an informal professional observance that recognizes the work of administrative support professionals. In North America, it is celebrated on the Wednesday of the last full week of April.


Chinese Language Day is an annual observance held on April 20. It was established in 2010 by the UNESCO along with the rest of the official Language Days in the United Nations. These Days focus on promoting multilingualism and cultural diversity.

April 20 is a counterculture holiday dedicated to smoking and celebrating cannabis. It is typically written as 420 or 4/20.

April 20 is National Pineapple Upside-Down Cake. It's time to enjoy a delightful and delicious masterpiece.

On April 20, Russia celebrates National Donor Day. This date was chosen to commemorate the first successful blood transfusion in Russia, which took place on April 20, 1832. It was performed by a young obstetrician Andrey Wolf to save the life of a woman in labor who had an obstetric hemorrhage.


This Day in History

  • 2013 An earthquake magnitude 6.6 stroke Lushan County, Ya'an, Sichuan province in China. More than 150 were killed and thousands injured.
  • 2012 A plane crashed in a residential area near the Benzair Bhutto International Airport in Islamabad, Pakistan. All 121 passengers and entire crew of 6 members died.
  • 2010 The oil drilling rig Deepwater Horizon exploded in the Gulf of Mexico. 11 workers were killed. The explosion began an 87-day oil spill, that became the largest marine oil spill in the history of the petroleum industry.
  • 2003 Died: Bernard Katz, German biophysicist, Nobel Prize laureate for his work on nerve biochemistry.
  • 2002 Died: Pierre Rapsat, Belgian singer-songwriter, who had a very successful career in Belgium and other francophone countries. Outside these areas he is best remembered for participation in the 1976 Eurovision Song Contest.
  • 1999 Two American high school seniors Eric Harris and Dylan Klebold killed 13 people and injured 21 others before committing suicide at Columbine High School in Columbine, Colorado.
  • 1991 Died: Don Siegel, American director and producer, best known for films Invasion of the Body Snatchers, Dirty Harry, Escape from Alcatraz and The Shootist.
  • 1972 Born: Tara Leigh Patrick, better known by stage name Carmen Electra, American model, actress, and singer. She became popular for appearances in Playboy magazine, on TV series Baywatch and game show Singled Out. She had major roles in parody films Scary Movie, Epic Movie, Date Movie, Meet the Spartans and Disaster Movie.
  • 1951 Romanian surgeon Dan Gavriliu made the first successful surgical replacement of a human organ. Dan didn't extensively describe his research as he couldn't pay the publication fees.
  • 1949 Born: Jessica Lange, American actress, the recipient of numerous Oscar, Emmy, Golden Globe, SAG and Dorian awards. Lange is considered as one of the greatest actresses of all-time.
  • 1946 The League of Nations officially dissolved, most of its power was given to the United Nations.
  • 1943 Born: Edie Sedgwick, American model and actress, best known as Andy Warhol's superstars. Sedgwick's career went down, when she was estranged from Warhol's circle
  • 1935 Died: Lucy, Lady Duff-Gordon, leading English fashion designer of the late 19th and early 20th centuries. Lucy was widely acknowledged innovator in couture styles as well as in fashion industry public relations. She popularized less restrictive corsets, promoted pared-down lingerie and launched liberating slit skirts.
  • 1927 Born: Karl Alexander Müller, Swiss physicist, Nobel Prize laureate for work in superconductivity in ceramic materials.
  • 1918 Died: Karl Ferdinand Braun, German physicist, Nobel Prize laureate for contributions to the development of wireless telegraphy.
  • 1918 Born: Kai Siegbahn, Swedish physicist, Nobel Prize laureate for work in laster spectroscopy. He developed the method of Electron Spectroscopy for Chemical Analysis, which is today usually described as X-ray photoelectron spectroscopy.
  • 1912 Died: Bram Stoker, Irish author, best known for his Gothic novel Dracula. During his lifetime he was known as a personal assistant of actor Henry Irving and business manager of the Lyceum Theatre in London, which Irving owned.
  • 1893 Born: Harold Lloyd, American actor and producer, stunt performer, best known fro his silent comedy films. Lloyd is regarded alongside Charlie Chaplin and Buster Keaton as one of the most popular and influential film comedians of the silent film era.
  • 1889 Born: Adolf Hitler, Austrian-German soldier and politician, Chancellor of Germany and dictator of Nazi Germany. He was the central person of Nazi Germany, World War II in Europe and the Holocaust.
  • 1873 Died: William Tite, English architect, designer of many London buildings, including the Royal Exchange, railway stations and cemeteries.
  • 1808 Born: Napoleon III, the first President of the French Second Republic and the Emperor of the Second French Empire.
  • 1796 Died: Chief Pontiac, American tribal leader, noted for his role in Pontiac's War. Today he is generally viewed as an important local leader who influenced a wider movement that he did not command.
  • 1792 France declared war against Francis II, the King of Hungary and Bohemia, thus beginning French Revolutionary Wars.
  • 1745 Born: Philippe Pinel, French physician, an instrumental figure in the development of a more humane approach to the custody and care of psychiatric patients, referred to today as moral therapy. He is also credited for the earliest evidence for the existence of schizophrenia.
  • 1535 The Sun dog phenomenon, the atmospheric phenomenon that consists of a pair of bright spots on either side on the Sun, was observed over Stockholm and depicted in the famous painting Vädersolstavlan. This painting is the oldest depiction of Sun dogs, of Stockholm in color and arguably the oldest Swedish landscape painting.
  • 1534 Died: Elizabeth Barton, English nun and martyr, known as The Nun of Kent, The Holy Maid of Kent, and The Maid of Kent. Barton prophesied against the marriage of King Henry VIII of England and Anne Boleyn, for which she was executed.
  • 1534 A French explorer Jacques Cartie began his voyage during which he discovered Canada and Labrador.
  • 1492 Born: Pietro Aretino, Italian author, playwright, and poet. Aretino had an immense influence on contemporary art and politics and invented modern erotic literature.
  • 1314 Died: Pope Clement V, infamous for suppressing the order of the Knights Templar and allowing the execution of many of its members. During the papacy he moved the Curia from Rome to Avignon.
  • 1303 Pope Boniface VIII instituted the Sapienza University in Rome. Today Sapienza is the largest European university by enrollments and the oldest university of Rome.