Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1639689_2 (kickoff VARCHAR, date VARCHAR)

### Question ###
What was the kickoff time on monday, may 13?

### Accurate SQL ###

SELECT kickoff FROM table_1639689_2 WHERE date = "Monday, May 13"