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

### Instruction:
When did the episode seen by  is 2.267 million people get aired?

### Inputs:
table_name: table, columns: ['#', 'Episode', 'AU Air Date', 'Timeslot', 'Viewers (m)', 'Nightly Rank (#)', 'Weekly Rank (#)']

### Response:
SELECT AU Air Date FROM table WHERE Viewers (m) = 2.267