I noticed something odd tonight while playing my dynasty. I am keeping track of how many paintings and stuff my oldest sim is doing and I pause after midnight, make note of how old he is and stuff. I had made a note of his stats when he was 100, than the next day after midnight I paused and it still said 100 even though he should be 101. On the piece of paper I went ahead and put 101, but just thought I'd mention that. It was weird. Aging is on of course.