When it's 23:00 (11:00 pm), all inmates MUST go to bed! During this period, all cell doors will be locked with a yellow key, and are opened at 8:00 in the morning. If you are not in your cell by 0:00 (12:00 am) and you are caught outside your cell, you will be sent to solitary and it will become morning. Wearing a guard outfit will not protect you from being sent to solitary if caught outside your cell after 0:00.
Putting a Bed Dummy and wearing a Guard Outfit will prevent you from getting sent to Solitary.
(If you dont have a Guard Outfit you will be instantly sent to Solitary even if you have a Bed Dummy on your bed)