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:
| Home team | Home team score | Away team | Away team score | Venue | Crowd | Date |
| --- | --- | --- | --- | --- | --- | --- |
| Richmond | 12.12 (84) | South Melbourne | 7.15 (57) | Punt Road Oval | 18000.0 | 20 June 1931 |
| Essendon | 7.13 (55) | Geelong | 13.11 (89) | Windy Hill | 10000.0 | 20 June 1931 |
| Collingwood | 22.22 (154) | North Melbourne | 9.10 (64) | Victoria Park | 6000.0 | 20 June 1931 |
| Carlton | 18.14 (122) | Melbourne | 9.4 (58) | Princes Park | 25000.0 | 20 June 1931 |
| St Kilda | 7.10 (52) | Footscray | 11.11 (77) | Junction Oval | 17000.0 | 20 June 1931 |
| Hawthorn | 12.8 (80) | Fitzroy | 7.14 (56) | Glenferrie Oval | 8000.0 | 20 June 1931 |
Question:
When did Essendon play at home?
Answer:
20 June 1931