Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What are the original air date(s) for season episode 20?

### Inputs:
table_name: table, columns: ['Series #', 'Season #', 'Title', 'Director', 'Writer', 'Original Airdate']

### Response:
SELECT Original Airdate FROM table WHERE Season # = 20