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_18821196_1 ( tv_network_s_ VARCHAR, weekly_schedule VARCHAR )

### Question ###
What is every TV network with a weekly schedule of Monday to Thursday @ 11:00 pm?

### Accurate SQL ###

SELECT tv_network_s_ FROM table_18821196_1 WHERE weekly_schedule = "Monday to Thursday @ 11:00 pm"