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_20046379_3 ( original_air_date VARCHAR, no_in_series VARCHAR )

### Question ###
On how many different dates did the episode with series number 35 air for the first time?

### Accurate SQL ###

SELECT COUNT(original_air_date) FROM table_20046379_3 WHERE no_in_series = "35"