My sessions usually start within a minute or two of the arranged time and should be 50 minutes but they usually go over by a few minutes and it’s not uncommon for them to be between 55-60 minutes. I’m the last appt of the day and my T quite often encourages me to just sit quietly together and just ‘be’ for a couple of minutes at the end which means we go over. There has been a few times when I’ve panicked and apologised for going over time and he has said he was more concerned about ensuring I was ok than ending on time as finishing the session when I was triggered or upset would be unethical, so he’s fairly flexible for allowing an extra 10 - 15 minutes which I’m extremely grateful for.