I know he knows what time we meet without looking at his calendar because he's said things that indicate that he knows at times that I doubt he's actually looking at his calendar, but I'm sure my appointments are just in his calendar for the foreseeable future and I don't know for sure if he would think twice about if he was about to schedule someone else in that slot. I think definitely the slots are mine because I've occupied them for a long time now, but I chose "maybe", leaning towards "yes", because I can't be 100% sure what he thinks.