Saint Valentine in Malta. Some Traditionalist Catholics observe earlier calendars of the Roman Rite, in which Saint Valentine was celebrated as a Simple Feast until 1955, when Pope Pius XII reduced the mention of him to a commemoration in the Mass of the day, a position it kept in the General Roman Calendar of 1960 incorporated in the 1962 edition of the Roman Missal, use of which, as an extraordinary form of the Roman Rite, is still authorized in accordance with Pope Benedict XVI's 2007 motu proprio "Summorum Pontificum". February 14 is also celebrated as St. Valentine's Day in other Christian Churches;
Joan S. Valentine Joan S. Valentine Joan Selverstone Valentine (born 1945) is a biological inorganic chemist and biochemist. Valentine's current work examines the role of transition metals, metalloenzymes, and oxidative stress in health. Her foremost expertise is superoxide anion and its functional enzyme superoxide dismutase. Valentine has been a member of the faculty of the University of California, Los Angeles since 1980, she has served as Editor-in-Chief of "Accounts of Chemical Research" since 1994, and she was elected to the National Academy of Sciences in 2005. In 1967, she graduated with a Bachelor of Arts in Chemistry from Smith College and a Ph.D.