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

### Instruction:
What is the repeat date of the episode that aired 22/12/1968?

### Inputs:
table_name: table, columns: ['#', 'Title', 'Director', 'Writer(s)', 'Originalairdate', 'Repeatairdate(s)', 'Prod.Code']

### Response:
SELECT Repeatairdate(s) FROM table WHERE Originalairdate = 22/12/1968