I converted my primary home to rental. I moved out 11/15 and the property was rented out on 12/1. Day rented is 31 days. Is personal use start from 1/1 to 11/15?

Search in the community seems like the personal use meant the personal use after its rented....So people are saying 0. Also as for property tax and mortgage interest we split based on days rented 31 days and 334 owned correct?