a system for fixing the beginning, length, and divisions of the year and arranging days and longer divisions of time, e.g. weeks and months, in a definite order
a table or set of tables displaying the days of one year
a chronological list of events or activities
a major event in the sporting calendar
[Middle English calender via Anglo-French or medieval Latin from Latin kalendarium moneylender's account book, from kalendae calends, the day of the month on which accounts were traditionally settled]