(religion, Jewish) The annual calendar used in Judaism. It determines the Jewish holidays, which Torah portions to read, yahrzeits (Yiddish: yortsaytn), and which set of Psalms should be read each day.

The amount of time between the beginning of the first day of January and the end of the last day of December in the Gregorian calendar. (365 days, or 366 in a leap year)

A person who uses a particular form of calendar / A person who contrives and makes calendars

(computing) The use of a computerized calendar to schedule events or appointments.

present participle of calendar

A calendar used to count down the days of Advent, having windows revealing a hidden picture or gift on each day.

The period of duration from the first date of one month to the last date of the same month, which can thus vary from 28 to 31 days in length.

(finance) An options strategy or position involving the simultaneous purchase and sale of options of the same class and strike price but with different expiration dates.

The calendar which was used in the western world before the present-day Gregorian calendar. The Julian calendar differed in having all multiple-of-4 years as leap years.

A calendar based on the movement of the Earth around the Sun, which defines the year. Dates indicate the position of the Earth during this revolution.