; (ii) at least 1 hour daily of out-of-cell congregate recreation; and (iii) other unstructured out-of-cell congregate activities, including time in a day room or equivalent space, meals, library and law library, legal visits, social and legal telephone calls, contact social visitation without physical barriers, and personal property and commissary. (B) Prohibition on solitary confinement A person incarcerated in a Federal facility shall not be placed in solitary confinement unless such placement is necessary— (i) at night for count or sleep, not to exceed 8 hours in any 24-hour period; (ii) during the day for count or required facility business that can only be carried out while a person incarcerated in a Federal facility is placed in a cell, not to exceed 2 hours in any 24-hour period; (iii) for purposes of medical quarantine or medical isolation, only if done in a medical unit overseen by health care staff, for as limited a time as medically necessary as determined by health care staff, and with comparable access as individuals incarcerated in the general population to phone calls, emails, and programming at a physical distance determined appropriate by health care staff; (iv) in an emergency situation as a last resort, only if necessary to deescalate immediate circumstances that pose a specific and significant risk of imminent serious physical injury to an individual, staff, or other incarcerated persons, and for as short a time as necessary to deescalate such circumstances, not to exceed 4 hours total immediately following such emergency situation, 4 hours total in any 24-hour period, or 12 hours total in any 7-day period, and subject to subparagraphs (C) and (D)