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_16 (days INTEGER, launch_date VARCHAR)
### Question:
What is Highest Days, when Launch Date is 23 January 2010?
### Answer:
SELECT MAX(days) FROM table_name_16 WHERE launch_date = "23 january 2010"