Observed open container of ham open not date marked.Except as specified in paragraphs 5 through 7 of this subsection, refrigerated, ready-to-eat, time/temperature control for safety food prepared and packaged by a food processing plant shall be clearly marked, at the time the original container is opened in a food service establishment and if the food is held for more than 24 hours, to indicate the date or day by which the food shall be consumed on the premises, sold, or discarded, when held at a temperature of 41°F (5°C) or below for a maximum of 7 days after the original container is opened. The day the original container is opened in the food service establishment shall be counted as Day 1, except, the day or date marked by the food service establishment may not exceed a manufacturer’s use by date if the manufacturer determined the use-by date based on food safety. Employee date marked the food items.