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_18788823_5 ( team VARCHAR, date_of_appointment VARCHAR )

### Question ###
Which team appointed a person on 23 December 2008?

### Accurate SQL ###

SELECT team FROM table_18788823_5 WHERE date_of_appointment = "23 December 2008"