Final answer:
The main events of Joyce Carol Oates' story "Where Are You Going, Where Have You Been?" occur on a Sunday when the protagonist Connie is home alone.
Step-by-step explanation:
The main plot of the short story "Where Are You Going, Where Have You Been?" by Joyce Carol Oates takes place on Sunday. The narrative focuses on Connie, a 15-year-old girl, and her encounter with a mysterious stranger named Arnold Friend.
The story narrates the events of a fateful Sunday afternoon when Arnold comes to Connie's house. This particular day is significant as the rest of Connie's family is away at a barbecue, leaving her alone and vulnerable to Arnold's manipulation and threats.