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 | Visitor | Score | Home | Decision | Attendance | Series |
| --- | --- | --- | --- | --- | --- | --- |
| April 22 | Philadelphia | 2 – 3 | Buffalo | Esche | 18690.0 | Sabres lead 1–0 |
| April 24 | Philadelphia | 2 – 8 | Buffalo | Esche | 18690.0 | Sabres lead 2–0 |
| April 26 | Buffalo | 2 – 4 | Philadelphia | Esche | 19984.0 | Sabres lead 2–1 |
| April 28 | Buffalo | 4 – 5 | Philadelphia | Esche | 20092.0 | Series tied 2–2 |
| April 30 | Philadelphia | 0 – 3 | Buffalo | Esche | 18690.0 | Sabres lead 3–2 |
| May 2 | Buffalo | 7 – 1 | Philadelphia | Esche | 19967.0 | Sabres win 4–2 |
Question:
What date was the game where the visiting team was philadelphia?
Answer:
April 22, April 24, April 30