Table:
text: 1980 Pittsburgh Steelers season
Schedule
Schedule
Week Date_ Opponent Location_ Time_ET_ Result_ Record
1 Sun. Sep. 7 Houston Oilers Three Rivers Stadium 1:00pm W 31–17 1–0
2 Sun. Sep. 14 at Baltimore Colts Memorial Stadium 2:00pm W 20–17 2–0
3 Sun. Sep. 21 at Cincinnati Bengals Riverfront Stadium 1:00pm L 30–28 2–1
4 Sun. Sep. 28 Chicago Bears Three Rivers Stadium 1:00pm W 38–3 3–1
5 Sun. Oct. 5 at Minnesota Vikings Metropolitan Stadium 1:00pm W 23–17 4–1
6 Sun. Oct. 12 Cincinnati Bengals Three Rivers Stadium 1:00pm L 17–16 4–2
7 Mon. Oct. 20 Oakland Raiders Three Rivers Stadium 9:00pm L 45–34 4–3

Question: When was the 1980 Pittsburgh Steelers game at Memorial Stadium?