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_2501754_2 (original_airdate VARCHAR, viewing_figures_millions VARCHAR)
### Question:
What are the original air date(s) for episodes with 8.63 million viewers?
### Answer:
SELECT original_airdate FROM table_2501754_2 WHERE viewing_figures_millions = "8.63"