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_89 ( air_date VARCHAR, episode_number VARCHAR, event_1 VARCHAR )

### Question ###
What is the air date the had atlasphere for event 1 before episode 11?

### Accurate SQL ###

SELECT air_date FROM table_name_89 WHERE episode_number < 11 AND event_1 = "atlasphere"