Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Result | Attendance |
| --- | --- | --- | --- | --- |
| 1.0 | September 2, 1984 | at Detroit Lions | W 30-27 | 56782.0 |
| 2.0 | September 10, 1984 (Mon) | Washington Redskins | W 37-31 | 59707.0 |
| 3.0 | September 16, 1984 | New Orleans Saints | W 30-20 | 57611.0 |
| 4.0 | September 23, 1984 | at Philadelphia Eagles | W 21-9 | 62771.0 |
| 5.0 | September 30, 1984 | Atlanta Falcons | W 14-5 | 57990.0 |
| 6.0 | October 8, 1984 (Mon) | at New York Giants | W 31-10 | 76112.0 |
| 7.0 | October 14, 1984 | Pittsburgh Steelers | L 17-20 | 59110.0 |
| 8.0 | October 21, 1984 | at Houston Oilers | W 34-21 | 39900.0 |
| 9.0 | October 28, 1984 | at Los Angeles Rams | W 33-0 | 65481.0 |
| 10.0 | November 4, 1984 | Cincinnati Bengals | W 23-17 | 58324.0 |
| 11.0 | November 11, 1984 | at Cleveland Browns | W 41-7 | 60092.0 |
| 12.0 | November 18, 1984 | Tampa Bay Buccaneers | W 24-17 | 57704.0 |
| 13.0 | November 25, 1984 | at New Orleans Saints | W 35-3 | 65177.0 |
| 14.0 | December 2, 1984 | at Atlanta Falcons | W 35-17 | 29644.0 |
| 15.0 | December 8, 1984 (Sat) | Minnesota Vikings | W 51-7 | 56670.0 |
| 16.0 | December 14, 1984 (Fri) | Los Angeles Rams | W 19-16 | 59743.0 |
Question:
On what date did the audience of 60,092 people watched a game end with a W 21-9?
Answer:
September 23, 1984