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 | Attendance | Record | Points |
| --- | --- | --- | --- | --- | --- | --- |
| October 12 | Montreal | 1–1 | Pittsburgh | 10701.0 | 0–0–1 | 1.0 |
| October 16 | Pittsburgh | 2–2 | Toronto | 16321.0 | 0–0–2 | 2.0 |
| October 17 | Pittsburgh | 0–3 | Philadelphia | 9862.0 | 0–1–2 | 2.0 |
| October 19 | Boston | 5–1 | Pittsburgh | 8071.0 | 0–2–2 | 2.0 |
| October 23 | Chicago | 8–5 | Pittsburgh | 5889.0 | 0–3–2 | 2.0 |
| October 26 | St. Louis | 2–4 | Pittsburgh | 7026.0 | 1–3–2 | 4.0 |
| October 30 | Pittsburgh | 3–7 | NY Rangers | 13111.0 | 1–4–2 | 4.0 |
Question:
When was Montreal a visitor?
Answer:
October 12