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:
| Month | Day | Visitor | Score | Home | Score |
| --- | --- | --- | --- | --- | --- |
| Dec. | 28 | Spokane | 5 | Portland | 4 |
| Jan. | 1 | Portland | 7 | Seattle | 4 |
| Jan. | 4 | Vancouver | 3 | Portland | 5 |
| Jan. | 8 | Seattle | 1 | Spokane | 5 |
| Jan. | 11 | Spokane | 1 | Seattle | 3 |
| Jan. | 14 | Portland | 4 | Vancouver | 5 |
| Jan. | 16 | Vancouver | 3 | Seattle | 12 |
| Jan. | 18 | Portland | 3 | Spokane | 5 |
| Jan. | 22 | Vancouver | 8 | Spokane | 5 |
| Jan. | 25 | Spokane | 5 | Portland | 4 |
| Jan. | 28 | Seattle | 2 | Vancouver | 3 |
| Jan. | 30 | Spokane | 2 | Seattle | 4 |
| Feb. | 4 | Seattle | 5 | Vancouver | 6 (10:45 OT) |
| Feb. | 6 | Portland | 3 | Seattle | 9 |
| Feb. | 8 | Vancouver | 4 | Portland | 8 |
| Feb. | 11 | Portland | 3 | Vancouver | 6 |
| Feb. | 13 | Vancouver | 1 | Seattle | 3 |
| Feb. | 15 | Seattle | 2 | Portland | 4 |
| Feb. | 18 | Seattle | 1 | Vancouver | 8 |
| Feb. | 20 | Portland | 2 | Seattle | 6 |
| Feb. | 22 | Vancouver | 1 | Portland | 2 (20:20 OT) |
| Feb. | 25 | Portland | 4 | Vancouver | 9 |
| Feb. | 27 | Vancouver | 1 | Seattle | 2 (22:20 OT) |
| March | 1 | Seattle | 3 | Portland | 1 |
| March | 4 | Portland | 4 | Vancouver | 8 |
| March | 6 | Vancouver | 3 | Seattle | 4 (2:58 OT) |
| March | 8 | Seattle | 6 | Portland | 9 |
Question:
how long was the longest ot session?
Answer:
22:20 OT