user: Question: When did season 9 originally air?
Columns: ['Series #', 'Season #', 'Title', 'Directed by:', 'Written by:', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [53.0, 1.0, '"Through the Time Barrier"', 'Harry Gerstad', 'David Chantler', 'April 23, 1955']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "Season #" = 9.0;