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:
| Match | Date | Competition or tour | Ground | Opponent | Score1 |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 11 July 2007 | — | A | Weston-super-Mare A.F.C. | 1 - 0 |
| 2.0 | 14 July 2007 | — | A | Torquay United | 0 - 1 |
| 3.0 | 17 July 2007 | — | A | Yeovil Town | 2 - 1 |
| 4.0 | 18 July 2007 | — | A | Liskeard Athletic | 5 - 0 |
| 5.0 | 21 July 2007 | — | A | Cambridge United | 2 - 1 |
| 6.0 | 24 July 2007 | Austria | N | Gençlerbirliği | 1 - 1 |
| 7.0 | 27 July 2007 | Austria | N | Hapoel Tel Aviv | 1 - 1 |
| 8.0 | 31 July 2007 | — | A | Paulton Rovers | 4 - 0 |
| 9.0 | 1 August 2007 | — | A | Truro City | 4 - 0 |
| 10.0 | 4 August 2007 | — | H | Bristol Rovers | 7 - 3 |
Question:
What day did they play cambridge united?
Answer:
21 July 2007