Trafalgar Square Authority in conjunction with the charity Unicef, who began ticketing the event to control crowd numbers. A Christmas ceremony has been held in the square every year since 1947. A Norway spruce (or sometimes a fir) is presented by Norway's capital city, Oslo as London's Christmas tree, a token of gratitude for Britain's support during World War II. (Besides war-time support, Norway's Prince Olav and the country's government lived in exile in London throughout the war.) The Christmas tree is decorated with lights that are switched on at a seasonal ceremony. It is usually held twelve days before Christmas Day.
Christmas tree in New England generally "Christmas is not much celebrated", whereas in Pennsylvania and New York it is. When Edward H. Johnson was vice president of the Edison Electric Light Company, a predecessor of Con Edison, he created the first known electrically illuminated Christmas tree at his home in New York City in 1882. Johnson became the "Father of Electric Christmas Tree Lights". The lyrics sung in the United States to the German tune begin "O Christmas tree...", giving rise to the mistaken idea that the German word (fir tree) means "Christmas tree", the German word for which is instead .