How many episodes aired on 22january2009
CREATE TABLE table_17641206_8 (episode VARCHAR, original_airdate VARCHAR)
SELECT COUNT(episode) FROM table_17641206_8 WHERE original_airdate = "22January2009"
### Context: CREATE TABLE table_17641206_8 (episode VARCHAR, original_airdate VARCHAR) ### Question: How many episodes aired on 22january2009 ### Answer: SELECT COUNT(episode) FROM table_17641206_8 WHERE original_airdate = "22January2009"