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_18424435_5 ( us_air_date VARCHAR, canadian_viewers__million_ VARCHAR )

### Question ###
Which air dates have 1.229 canadian viewers (millions)?

### Accurate SQL ###

SELECT us_air_date FROM table_18424435_5 WHERE canadian_viewers__million_ = "1.229"