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:
| Date | Opponent | Venue | Result | Competition |
| --- | --- | --- | --- | --- |
| 13th | Telford Tigers | Home | 8-2 W | Challenge |
| 14th | Telford Tigers | Away | 0-2 W | Challenge |
| 20th | Peterborough Phantoms | Home | 4-2 W | Challenge |
| 21st | Peterborough Phantoms | Away | 2-0 L | Challenge |
| 27th | Sheffield Scimitars | Home | 2-3 L | League |
| 28th | Bracknell Bees | Away | 5-3 L | League |
Question:
When did the peterborough phantoms play at a venue of home?
Answer:
20th