A calendar item is a specific EVENT, day, or DATE that is marked on a calendar. An EVENT is a five-letter word that can refer to any type of gathering or activity, such as a party or a meeting. TUE is a three-letter abbreviation for Tuesday, which is the third day of the week. DATE is a four-letter word that refers to a particular day of the month, such as the 15th or the 30th. Together, these three words form a comprehensive description of a calendar item.