3:43
The machine was started and up from the center of the Lake jumped Mars , red against the darkness . Professor Fox , with a flashlight that throws the image of an arrow , pointed out the stars as they appeared over the dome . The coming of Mars forecast the dawn of May 10 and in a few moments the sun emerged from the proper latitudinal position out of the lake and blazed its way across the heavens and set behind the silhouette of the Standard Oil Building on the west wall of the dome in less than a minute , denoting that the day had passed in review . At 3:43 P. M. central standard time , the midget moon arose and sailed its course and then set behind the darkened picture of the Straus Tower . Then Professor Fox ran off Sunday , Monday and Tuesday for good measure , each time with Mars heralding the dawn and the sun changing position as it does in reality . Fifty centuries of astronomical history can be run off in an hour by the machine . The planets are visible during the day in the planetarium as well as night .