Wheel of the Year the last month of the old year and the first month of the new year and is followed by eleven days of extended celebration. In Roman traditions additional festivities take place during the six days leading up to Midwinter. As the first cross-quarter day following Midwinter this day falls on the first of February and traditionally marks the first stirrings of spring. It aligns with the contemporary observance of Groundhog Day. It is time for purification and spring cleaning in anticipation of the year's new life. In Rome, it was historically a shepherd's holiday, while the Celts associated it with
Joan S. Valentine in Inorganic Chemistry from Princeton University in 1971. In 1972, she moved to Rutgers University where she served as Assistant, Associate and Professor of Chemistry. In 1980, she moved to UCLA and became a Professor in 1981. From 1991 to 1994, she also served as Departmental Vice Chair for Research and Administration. From 1989 to 1995, she was the Associate Editor for the journal "Inorganic Chemistry". Valentine served as Director of the UCLA Chemistry-Biology Interface Predoctoral Training Program from 1993 to 2001. Joan S. Valentine Joan Selverstone Valentine (born 1945) is a biological inorganic chemist and biochemist. Valentine's current work