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 13, 1987 | at Denver Broncos | L 17-40 | Mile High Stadium | 0-1 | 75,999 |
| 2.0 | September 20, 1987 | Kansas City Chiefs | W 43-14 | Kingdome | 1-1 | 61,667 |
| 3.0 | September 27, 1987 | at San Diego Chargers | Cancelled due to player's strike | Cancelled due to player's strike | Cancelled due to player's strike | Cancelled due to player's strike |
| 4.0 | October 4, 1987 | Miami Dolphins | W 24-20 | Kingdome | 2-1 | 19,448 |
| 5.0 | October 11, 1987 | Cincinnati Bengals | L 10-17 | Kingdome | 2-2 | 31,739 |
| 6.0 | October 18, 1987 | at Detroit Lions | W 37-14 | Pontiac Silverdome | 3-2 | 8,310 |
| 7.0 | October 25, 1987 | at Los Angeles Raiders | W 35-13 | Los Angeles Memorial Coliseum | 4-2 | 52,735 |
| 8.0 | November 1, 1987 | Minnesota Vikings | W 28-17 | Kingdome | 5-2 | 61,134 |
| 9.0 | November 9, 1987 | at New York Jets | L 14-30 | The Meadowlands | 5-3 | 60,452 |
| 10.0 | November 15, 1987 | Green Bay Packers | W 24-13 | Kingdome | 6-3 | 60,963 |
| 11.0 | November 22, 1987 | San Diego Chargers | W 34-3 | Kingdome | 7-3 | 62,144 |
| 12.0 | November 30, 1987 | Los Angeles Raiders | L 14-37 | Kingdome | 7-4 | 62,802 |
| 13.0 | December 6, 1987 | at Pittsburgh Steelers | L 9-13 | Three Rivers Stadium | 7-5 | 48,881 |
| 14.0 | December 13, 1987 | Denver Broncos | W 28-21 | Kingdome | 8-5 | 61,759 |
| 15.0 | December 20, 1987 | at Chicago Bears | W 34-21 | Soldier Field | 9-5 | 62,518 |
Question:
When was the record of 0-1 set?
Answer:
September 13, 1987