Definition: Isochronon, also known as a chronon, is a type of measurement system that uses one time period to represent all periods in a calendar. In this system, each day or week is considered an "isochron," with no overlap between two consecutive isochrons. For example, if you have a 5-day calender and you want to know the date for the next day, it would be represented as "6-7-8" because these are all the days