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

### Instruction:
When 1.17 is the production code how many air dates are there?

### Inputs:
table_name: table, columns: ['#', 'Original title', 'Directed by', 'Written by', 'Original airdate', 'Prod. code', 'Viewers']

### Response:
SELECT COUNT Original airdate FROM table WHERE Prod. code = 1.17