名词

1. 日历;月历
A calendar is a chart or device which displays the date and the day of the week, and often the whole of a particular year divided up into months, weeks, and days.

2. 历法
A calendar is a particular system for dividing time into periods such as years, months, and weeks, often starting from a particular point in history.

3. (某一组织、团体或个人的)日程表，纪事表，大事一览表
You can use calendar to refer to a series or list of events and activities which take place on particular dates, and which are important for a particular organization, community, or person.

1. a list or register of events (appointments or social events or court cases etc)

e.g. I have you on my calendar for next Monday

2. a tabular array of the days (usually for one year)

3. a system of timekeeping that defines the beginning and length and divisions of the year