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 | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | September 3 | Oakland Raiders | W 14–6 | Mile High Stadium | 1–0 | 75092.0 |
| 2.0 | September 11 | at Minnesota Vikings | L 9–12 (OT) | Metropolitan Stadium | 1–1 | 46508.0 |
| 3.0 | September 17 | San Diego Chargers | W 27–14 | Mile High Stadium | 2–1 | 74983.0 |
| 4.0 | September 24 | at Kansas City Chiefs | W 23–17 (OT) | Arrowhead Stadium | 3–1 | 60593.0 |
| 5.0 | October 1 | Seattle Seahawks | W 28–7 | Mile High Stadium | 4–1 | 74989.0 |
| 6.0 | October 8 | at San Diego Chargers | L 0–23 | San Diego Stadium | 4–2 | 50077.0 |
| 7.0 | October 16 | Chicago Bears | W 16–7 | Mile High Stadium | 5–2 | 75008.0 |
| 8.0 | October 22 | at Baltimore Colts | L 6–7 | Memorial Stadium | 5–3 | 54057.0 |
| 9.0 | October 29 | at Seattle Seahawks | W 20–17 (OT) | Kingdome | 6–3 | 62948.0 |
| 10.0 | November 5 | New York Jets | L 28–31 | Mile High Stadium | 6–4 | 74983.0 |
| 11.0 | November 12 | at Cleveland Browns | W 19–7 | Cleveland Stadium | 7–4 | 70856.0 |
| 12.0 | November 19 | Green Bay Packers | W 16–3 | Mile High Stadium | 8–4 | 74965.0 |
| 13.0 | November 23 | at Detroit Lions | L 14–17 | Pontiac Silverdome | 8–5 | 71785.0 |
| 14.0 | December 3 | at Oakland Raiders | W 21–6 | Oakland-Alameda County Coliseum | 9–5 | 53932.0 |
| 15.0 | December 10 | Kansas City Chiefs | W 24–3 | Mile High Stadium | 10–5 | 74149.0 |
| 16.0 | December 16 | Pittsburgh Steelers | L 17–24 | Mile High Stadium | 10–6 | 74104.0 |
Question:
On what date was the result w 28–7?
Answer:
October 1