| Year | Description | Category |
|---|---|---|
| 2018 | Indian film K.G.F: Chapter 1 was released in theaters. This is one of the highest grossing movies in India. | Release Date |
| 2017 | 29 people died in Jecheon fire at Jecheon, South Korea. | Man-Made Disaster |
| 2017 | Astronaut from United States, Bruce McCandless died. | Death day |
| 2009 | American biochemist Edwin G. Krebs died. | Death day |
| 2007 | Mauritius's first artificial satellite Rascom-QAF 1 was launched. | Launch Day |
| 1992 | Martinair Flight 495 aircraft incident at Faro, Portugal, killed 56 people. | Man-Made Disaster |
| 1990 | Soviet chemist Ivan Knunyants died. | Death day |
| 1988 | Dutch biologist and ornithologist Nikolaas Tinbergen died. | Death day |
| 1988 | Pan Am Flight 103 aircraft incident at Lockerbie, United Kingdom, killed 270 people. | Man-Made Disaster |
| 1987 | Golfer from United States, Henry Ransom died. | Death day |
| 1980 | TAC Colombia HK-1810 aircraft incident at Riohacha, Colombia, killed 70 people. | Man-Made Disaster |
| 1977 | French politician Emmanuel Macron was born. | Birthday |
| 1971 | Chess grandmaster from Russia, Pavel Tregubov was born. | Birthday |
| 1970 | American business executive Tim Armstrong was born. | Birthday |
| 1964 | Chess grandmaster from France, Olivier Renet was born. | Birthday |
| 1963 | English cricketer Jack Hobbs died. | Death day |
| 1960 | Hollywood film Swiss Family Robinson was released in theaters. This is one of the highest grossing movies. | Release Date |
| 1957 | Chess grandmaster from Spain, Roberto Cifuentes Parada was born. | Birthday |
| 1954 | American tennis player Chris Evert was born. | Birthday |
| 1949 | Hollywood film Samson and Delilah was released in theaters. This is one of the highest grossing movies. | Release Date |
| 1945 | Australian cricketer Doug Walters was born. | Birthday |
| 1945 | Chess grandmaster from Canada, Duncan Suttles was born. | Birthday |
| 1945 | Astronaut from United States, Millie Hughes-Fulford was born. | Birthday |
| 1937 | American lawyer and politician Frank B. Kellogg died. | Death day |
| 1937 | American actress Jane Fonda was born. | Birthday |
| 1935 | American film director John G. Avildsen was born. | Birthday |
| 1930 | Chess grandmaster from Germany, Wolfgang Pietzsch was born. | Birthday |
| 1923 | French airship Dixmude aircraft incident at Mediterranean, off Sicily, Italy, killed 52 people. | Man-Made Disaster |
| 1922 | American ventriloquist and actor Paul Winchell was born. | Birthday |
| 1917 | German writer Heinrich Boll was born. | Birthday |
| 1892 | Golfer from United States, Walteragen was born. | Birthday |
| 1890 | American geneticist Hermann Joseph Muller was born. | Birthday |
| 1804 | British politician Benjamin Disraeli was born. | Birthday |
2018-12-21