calends

ot noun

1. Any system by which time is divided into days, weeks, months, and years. The three principal calendars are the Gregorian, Jewish, and Islamic calendars.
2. A means to determine the date consisting of a document containing dates and other temporal information. Write his birthday on the calendar hanging on the wall.
3. A list of planned events. The club has a busy calendar this year.
4. An orderly list or enumeration of persons, things, or events; a schedule. a calendar of bills presented in a legislative assemblly;  a calendar of causes arranged for trial in court