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_name_24 (time VARCHAR, news_freq VARCHAR, local_networked VARCHAR, ad_freq VARCHAR)

### Question ###
Which time has a local/networked value of Local, ad frequency of every 20 minutes, and news frequency of n/a after 7PM news?

### Accurate SQL ###

SELECT time FROM table_name_24 WHERE local_networked = "local" AND ad_freq = "20 minutes" AND news_freq = "n/a after 7pm news"