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

### Instruction:
When are start dates (1st night) for the season of 1966?

### Inputs:
table_name: table, columns: ['No', 'Season', 'Start date (1st night)', 'End date (Last night)', 'Location', 'No of Proms']

### Response:
SELECT Start date (1st night) FROM table WHERE Season = 1966