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_22325 ( "No." real, "#" real, "Title" text, "Directed by" text, "Written by" text, "Canadian air date" text, "U.S. air date" text, "Production code" real, "Canadian viewers (million)" text )

### Question ###
How many air dates where directed by jim donovan?

### Accurate SQL ###

SELECT COUNT("U.S. air date") FROM table_22325 WHERE "Directed by" = 'Jim Donovan'