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

### Instruction:
What was the first airdate or the season that had less than 24 episodes and a Nielsen ranking of #38?

### Inputs:
table_name: table, columns: ['Season', 'Episodes', 'First airdate', 'Last airdate', 'Nielsen ranking']

### Response:
SELECT First airdate FROM table WHERE Episodes < 24 AND Nielsen ranking = #38