On or About is a term used to describe the range of dates or time periods associated with a particular event or situation. It can be used to refer to a specific date or to indicate an approximate or general period of time. It is often used in reference to a legal document or agreement, or to indicate the approximate date of an event. There are two types of On or About: 1. Exact Date: This type of On or About refers to a specific date that is known. 2. Approximate Date: This type of On or About refers to a general time frame that is approximate, such as a month or year.