Figure 2-4 in the textbook shows the situation on September 21, when Cygnus is highest in the sky at 8:00 p.m. local time and Andromeda is highest in the sky at midnight. But as Figure 2-5 in the textbook shows, on July 21 Cygnus is highest in the sky at midnight. On July 21, at approximately what local time is Andromeda highest in the sky? Explain your reasoning