Hey Jonah! I did as you suggested. But, didn’t fix it. And, the problem wasn’t even purely with repeating events. I had a one-time event that was just displaying on every day in October.
I played around with some stuff, changed dates, deleted events…It looks like if I have an event listed on the last day of the month, the next month’s calendar pulls it and repeats it. If I leave the last day of the month open, then I don’t get the issue.