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_73663 ( "Episode no." real, "Airdate" text, "Viewers" real, "BBC Three weekly ranking" text, "Cable rank" text )

### Question ###
How many entries are shown for viewers when the airdate was 26 november 2009?

### Accurate SQL ###

SELECT COUNT("Viewers") FROM table_73663 WHERE "Airdate" = '26 November 2009'