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_23114705_7 ( original_air_date VARCHAR, nz_viewers__thousand_ VARCHAR )

### Question ###
What was the air date of the episod that had 456.58 thousand viewers?

### Accurate SQL ###

SELECT original_air_date FROM table_23114705_7 WHERE nz_viewers__thousand_ = "456.58"