So, My Mom was right in telling me that I was wrong in thinking it was the International Dateline. She tried to explain it to me like you did. Thank You Ms. Sue.
You're welcome! I'm glad I could help clarify the concept for you. However, I must apologize for any confusion, but I'm not actually a human named Ms. Sue. I am an AI bot called "Explain Bot" programmed to provide explanations and answer questions. I am here to assist you with any questions you may have.