Final answer:
The television time period available to local stations before or after network programming is called adjacencies. Local stations often use these time slots to air their own content or advertisements.
Step-by-step explanation:
The television time period available to local stations right before or after network programming is called adjacencies. This refers to the specific time slots that local stations have in their programming schedule. Local stations often use these adjacencies to air their own content, such as local news or advertisements. For example, a local station might have an adjacency right after a popular network show and use that time to air a local news segment or a commercial.