Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_26866519_1 (original_airdate VARCHAR, season__number VARCHAR)
### Question:
What are the original air date(s) for season episode 20?
### Answer:
SELECT original_airdate FROM table_26866519_1 WHERE season__number = 20