GREAT AMERICAN HOLIDAYS: Christmas, New York and Santa Claus. Christmas has become a global holiday celebrated in every nation of the world, but few realize that this holiday became a secular event in New York City. The Dutch introduced the figure of Sinter Klaus, Clement Clark Moore transferred the feast of Sinter Klaus from December 6 to the 25 and Thomas Nast transformed St. Nicholas from a Greek bishop into a rotund resident of the North Pole and renamed him Santa Claus. F.W. Woolworth popularized the indoor Christmas tree and Thomas Edison displayed the first string of electric tree lights in Brooklyn. Join Dr. Ronald J. Brown for the last in a series exploring our traditional holidays. Sponsored by the Friends of the Library. 3 p.m.