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

### Instruction:
At what date did the 23rd manager vacate the position?

### Inputs:
table_name: table, columns: ['Team', 'Outgoing manager', 'Manner of departure', 'Date of vacancy', 'Replaced by', 'Date of appointment', 'Position in table']

### Response:
SELECT Date of vacancy FROM table WHERE Position in table = 23rd