Very long. You either do a split shift which would comprise of doing a 4hr shift with a 2/3/4hr break to come back and do another 3/4hr shift. There is also working all day when you will start at 10am, have a split shift from usually 3/4pm until half 5/6pm where you will then work until 11pm/12/1am. Or you get a 3/4hr shift for the day.
Not the best but not u reasonable
Session shifts are usually 11.30-3.30/5.30-9.45, unless you're in cleaning which starts at 9am, and then possible lock up till 1am.