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 broadcast (program_id VARCHAR, time_of_day VARCHAR)

### Question ###
find the number of different programs that are broadcast during night time.

### Accurate SQL ###

SELECT COUNT(DISTINCT program_id) FROM broadcast WHERE time_of_day = 'Night'