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_23143607_1 ( foundation VARCHAR, television_channels VARCHAR )

### Question ###
How many foundation dates were there when the television channels is canal nou canal nou dos canal nou 24 tvvi?

### Accurate SQL ###

SELECT COUNT(foundation) FROM table_23143607_1 WHERE television_channels = "Canal Nou Canal Nou Dos Canal Nou 24 TVVi"