When was the moving electric sign installed around the New York Times building in Times Square?

One Times Square, also known as 1475 Broadway, the New York Times Building, the New York Times Tower, or simply as the Times Tower, is a 25-story, 363-foot-high (111 m) skyscraper, designed by Cyrus L. W. Eidlitz, located at 42nd Street and Broadway in New York City.

On November 6, 1928, an electronic news ticker known as the Motograph News Bulletin (colloquially known as the "zipper") was introduced near the base of the building. The zipper originally consisted of 14,800 light bulbs, with the display controlled by a chain conveyor system inside the building; individual letter elements (a form of movable type) were loaded into frames to spell out news headlines. As the frames moved along the conveyor, the letters themselves triggered electrical contacts which lit the external bulbs (the zipper has since been upgraded to use modern LED technology).

The first headline displayed on the zipper announced Herbert Hoover's victory in that day's presidential election. The zipper was used to display other major news headlines of the era, and its content later expanded to include sports and weather updates as well. On the evening of August 14, 1945, the zipper was famously used to announce Japan's surrender from World War II to a packed crowd in Times Square.