Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE broadcast (program_id VARCHAR, time_of_day VARCHAR)
### Question:
find the number of different programs that are broadcast during night time.
### Answer:
SELECT COUNT(DISTINCT program_id) FROM broadcast WHERE time_of_day = 'Night'