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_30 ( weeks_on_chart__uk_ VARCHAR, entered_chart__uk_ VARCHAR )

### Question ###
How many weeks did the single that entered the charts 14 september 2002 stay on the charts ?

### Accurate SQL ###

SELECT COUNT(weeks_on_chart__uk_) FROM table_name_30 WHERE entered_chart__uk_ = "14 september 2002"