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_70458 ( "Episode No." real, "Airdate" text, "Total Viewers" real, "Share" text, "BBC One Weekly Ranking" real )

### Question ###
What date did the episode with a weekly ranking of 14 air?

### Accurate SQL ###

SELECT "Airdate" FROM table_70458 WHERE "BBC One Weekly Ranking" = '14'