Any time after 3 pm that I know of.
You can check in anytime after 3 PM. If you are going to be later than office hours, you need to let them know so they can make arrangements with security to give you the keys.
3pm
3:00 And check out I think is 10:00 , But if they have your unit clean they will let you in before 3:00
Thanks! Your answer is awaiting moderation.