- Noun. Any system by which time is divided into days, weeks, months, and years.
- Noun. A means to determine the date consisting of a document containing dates and other temporal information.
- Noun. A list of planned events.
- Verb. (legal) To set a date for a proceeding in court, usually done by a judge at a calendar call.
- Verb. To enter or write in a calendar; to register.