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_65351 ( "Episode Number" text, "Broadcast Date" text, "Title" text, "Written by" text, "Viewership (Millions)" real )

### Question ###
What is the episode number of the episode broadcast on 21 September 2001?

### Accurate SQL ###

SELECT "Episode Number" FROM table_65351 WHERE "Broadcast Date" = '21 september 2001'