Chinese New Year day or even one moon cycle due to using a meridian based on a different capital city in a different time zone or different placements of intercalary months. Chinese calendar defines the lunar month with winter solstice as the 11th month, which means that Chinese New Year usually falls on the second new moon after the winter solstice (rarely the third if an intercalary month intervenes). In more than 96% of the years, the Chinese New Year's Day is the closest new moon to lichun () on 4 or 5 February, and the first new moon after Dahan (). In
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.