a table or register with the days of each month and week in a year

He marked the date on his calendar.

any of various systems of reckoning time, esp. with reference to the beginning, length, and divisions of the year. Compare Chinese calendar , Gregorian calendar , Hindu calendar , Jewish calendar , Julian calendar , Muslim calendar .

a list or register, esp. one arranged chronologically, as of appointments, work to be done, or cases to be tried in a court.

a list, in the order to be considered, of bills, resolutions, etc., brought before a legislative body.

Obsolete . a guide or example.

to enter in a calendar; register.

noun

agenda , almanac , annal , bulletin , card , chronology , daybook , diary , docket , journal , lineup , list , log , logbook , menology , pipeline , program , record , register , sked , system of reckoning , tab , table , time , timetable , order of the day , schedule , calends , catalogue , chart , gregorian , intercalation , julian , ordo , slate