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_62802 ( "Time" text, "Show Name" text, "Local/Networked" text, "Ad Freq" text, "News Freq" text )

### 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_62802 WHERE "Local/Networked" = 'local' AND "Ad Freq" = '20 minutes' AND "News Freq" = 'n/a after 7pm news'