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_name_36 (date VARCHAR, margin_of_victory VARCHAR, tournament VARCHAR)

### Question ###
What date was there a playoff on the margin of victory during the Shirley Englehorn Invitational?

### Accurate SQL ###

SELECT date FROM table_name_36 WHERE margin_of_victory = "playoff" AND tournament = "shirley englehorn invitational"