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_2 ( date_of_appointment VARCHAR, manner_of_departure VARCHAR, replaced_by VARCHAR )

### Question ###
What is the date of appointment for the team with a resigned manner of departure and replaced by Sandy Clark?

### Accurate SQL ###

SELECT date_of_appointment FROM table_name_2 WHERE manner_of_departure = "resigned" AND replaced_by = "sandy clark"