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 | Game site | Attendance |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Sept. 12, 1976 | Cleveland Browns | L 38–17 | Cleveland Stadium | 67496.0 |
| 2.0 | Sept. 19, 1976 | Denver Broncos | L 46–3 | Mile High Stadium | 62669.0 |
| 3.0 | Sept. 29, 1976 | Miami Dolphins | L 16–0 | Miami Orange Bowl | 49754.0 |
| 4.0 | Oct. 3, 1976 | San Francisco 49ers | L 17–6 | Candlestick Park | 42961.0 |
| 5.0 | Oct. 10, 1976 | Buffalo Bills | W 17–14 | Shea Stadium | 59110.0 |
| 6.0 | Oct. 18, 1976 | New England Patriots | L 41–7 | Schafer Stadium | 50883.0 |
| 7.0 | Oct. 24, 1976 | Baltimore Colts | L 20–0 | Shea Stadium | 59576.0 |
| 8.0 | Oct. 31, 1976 | Buffalo Bills | W 19–14 | Rich Stadium | 41285.0 |
| 9.0 | Nov. 7, 1976 | Miami Dolphins | L 27–7 | Shea Stadium | 53344.0 |
| 10.0 | Nov. 14, 1976 | Tampa Bay Buccaneers | W 34–0 | Shea Stadium | 46426.0 |
| 11.0 | Nov. 21, 1976 | New England Patriots | L 38–24 | Shea Stadium | 49983.0 |
| 12.0 | Nov. 28, 1976 | Baltimore Colts | L 33–16 | Memorial Stadium | 44023.0 |
| 13.0 | Dec. 5, 1976 | Washington Redskins | L 37–16 | Shea Stadium | 46638.0 |
| 14.0 | Dec. 12, 1976 | Cincinnati Bengals | L 42–3 | Shea Stadium | 31067.0 |
Question:
Opponent of denver broncos happened on what date?
Answer:
Sept. 19, 1976