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_name_66 (week INTEGER, date VARCHAR)
### Question:
What's the highest week for the day of October 21, 1956?
### Answer:
SELECT MAX(week) FROM table_name_66 WHERE date = "october 21, 1956"