calendar

Definition of calendar in English English dictionary: Any system by which time is divided into days, weeks, months, and years
We currently use the Gregorian calendar.; A list of planned events
The club has a busy calendar this year.; To set a date for a proceeding in court, usually done by a judge at a calendar call
The judge agreed to calendar a hearing for pretrial motions for the week of May 15, but did not agree to calendar the trial itself on a specific date.; A means to determine the date consisting of a document containing dates and other temporal information; {n} an almanac, a register of the year; The part of the watch that indicates day of the week and/or month Can be displayed via a "cut-out" in the dial or through the use of sub-dials; The system by which an institution divides its year into shorter periods for instruction and awarding credit The most common calendars are those based on the semester, trimester, quarter, and 4-1-4; enter into a calendar; Each week in the year is given a "week number" and a calendar is provided to owners giving the actual date, each year, of their numbered week Not all timeshare resorts operate to the same calendar; To enter or write in a calendar; to register; 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. The Christian calendar was originally based on the Julian calendar of the Romans; A scheme devised in order to find one's position in time and to calculate the distance in time when the time scale exceeds one solar day See Gregorian and Julian calendar; Commercial/retail - Any formal listing of the months and days in each year Size varies Single hanger calendars usually use one picture and list the months separately Multiple hanger calendars may change the picture displayed each month Desk calendars may have different pictures each week or even each day and may be promotional or retail; The portal_calendar allows for a mechanism to administer what content is shown in calendar; a tabular array of the days (usually for one year) a system of timekeeping that defines the beginning and length and divisions of the year enter into a calendar; A feature that shows the date, and often the day of the week There are several types of calendar watches Most calendar watches show the information digitally through an aperture on the watch face Some chronograph watches shoe the information on sub-dials on the watch face; A process were the paper is squeezed between metal cylinders to compact the paper fibers This makes the paper smoother and gives it some gloss; a list or register of events (appointments or social events or court cases etc); "I have you on my calendar for next Monday"; a system of timekeeping that defines the beginning and length and divisions of the year; A list, in alphabetical order, of all the cases in each courtroom every day "To calendar" something means to give a day, time, and courtroom to a case; A watch feature that shows the date and sometimes the day of the week and the month It can be displayed through a cut-out window in the dial, as a sud-dial with small hands indicating the day/date feature or by digital readout; University publication containing the official listing of programs of studies, degree requirements, courses and faculty and university regulations; in the legislative sense, a group of bills or proposals to be discussed or considered in a legislative committee or on the floor of the House or Senate; Judaism follows a lunar calandar adjusted every three years or so to the solar cycle (by adding a second 12th month)-thus "lunisolar"; the oldest Jewish annual observances are Passover/pesah, Shevuot, Yom Kippur and Sukkot; other ancient celebrations include Rosh Hashanah, Simhat Torah, Hannukah and Purim; in general, Christianity operates on a "solar" calendar based on the relationship between the sun and the earth (365 25 days per year); the main Christian observances are Easter, Pentecost, and Christmas; A list of bills, resolutions, and other business to be considered by congressional committees or taken up on the floor of either house of Congress; of those which are liable to change yearly according to the varying date of Easter; An orderly list or enumeration of persons, things, or events; a schedule; as, a calendar of state papers; a calendar of bills presented in a legislative assembly; a calendar of causes arranged for trial in court; a calendar of a college or an academy; a list or register of events (appointments or social events or court cases etc); "I have you on my calendar for next Monday" a tabular array of the days (usually for one year) a system of timekeeping that defines the beginning and length and divisions of the year enter into a calendar; a tabular array of the days (usually for one year); A tabular statement of the dates of feasts, offices, saints' days, etc; A published summary in English of the contents of a document or a series of documents For example, the charter rolls are the manuscript record of charters granted by the king; they are written in Latin in a contemporary hand The calendar of the charter rolls is a summary of their contents with some information, such as the witness lists, left out; An application for tracking your schedule and related tasks If you are using Netscape at work, this application may be available from the Window menu within Netscape If you are using Netscape at home, or if your workplace doesn't have Netscape Calendar available, you can use the web-based calendar available at www netscape com; An alphabetical, categorized list of each case to be heard in each courtroom every day To calendar something means to assign a day, time, and courtroom to a case; A list of bills, resolutions, or other matters to be considered before committees or on the floor of either House of Congress; An orderly arrangement of the division of time, adapted to the purposes of civil life, as years, months, weeks, and days; also, a register of the year with its divisions; an almanac; esp; {f} write down in a calendar, register; The daily printed agenda of business for each house of the General Assembly The calendar also contains scheduled committee hearings; {i} chart showing the months of a year (including days and weeks); schedule, timetable; 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. It is one of the British sporting calendar's most prestigious events = diary. System for dividing time over extended periods, such as days, months, or years, and arranging these divisions in a definite order. A calendar is essential for the study of chronology, which reckons time by regular divisions, or periods, and uses these to date events. It is also vital for any civilization that needs to measure periods for agricultural, business, domestic, or other reasons. The lunation, or period in which the moon completes a cycle of its phases (29 1 2 days), is the basis for the month; most ancient calendars were collections of months. Days and seasons, which are a solar phenomena, do not have periods that evenly divide, so ancient calendars employed various means, such as the periodic insertion of an intercalary month, to reconcile the months with the seasons. The Gregorian calendar used almost universally today is a modification of the Julian calendar adopted by Julius Caesar, which used a 365 1 4 -day year with 12 months that came to have the number of days we know today. See also calendar, Jewish; calendar, Muslim; sidereal period. calendar Jewish Hebrew calendar calendar Muslim Islamic calendar French republican calendar Gregorian calendar; Every year the Watch Tower Society publishes a picture calendar that is different from those available from worldly sources in that it does not mark Sundays or traditional worldly holidays in red Instead, each Monday is marked with the Theocratic Ministry School Bible reading for the week, and Bible reading assignments for several days preceding the Memorial and the Memorial date itself are indicated In the past the pictures have portrayed scenes from Bible lands, and in recent years collections of pictures of branch offices and people engaged in the preaching work in many lands have been featured; The daily printed agenda of business for each house The Calendar also contains scheduled committee meetings and public hearings; Our main academic publication: the compendium of admission requirements, general academic regulations, specific information about faculties and schools, degree programs and Senate-approved course descriptions; The Julian Calendar, introduced B C 46 It fixed the ordinary year to 365 days, with an extra day every fourth year (leap year) This is called “The Old Style ” The Gregorian Year A modification of the Julian Calendar, introduced in 1582 by Pope Gregory XIII , and adopted in Great Britain in 1752 This is called “the New Style ” The Mohammedan Calendar, used in Mohammedan countries, dates from July 16th, 622, the day of the Hegira It consists of 12 lunar months (29 days, 12 hours, 44 minutes) A cycle is 30 years The Revolutionary Calendar was the work of Fabre d'Eglantine and Mons Romme; The York University Undergraduate Programs Calendar outlines all University undergraduate course offerings, programs and legislation for the Faculties of Arts, Education, Environmental Studies, Fine Arts, Pure and Applied Science, and Glendon College The Undergraduate Programs Calendar is available at calendars registrar yorku ca/calendars/index htm Atkinson, the Schulich School of Business, Osgoode Hall Law School, and Graduate Studies publish separate calendars; Also called the Orders of the Day (O D ), the calendar is the daily agendaof the House and Senate (See also Orders of the Day); 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. There was a calendar on the wall above, with large squares around the dates
calendar call: A hearing at which a judge will require all attorneys with cases pending before the court to appear so that the court may schedule hearings and trials
calendar calls: plural form of calendar call
calendar method: A rhythm method of natural birth control
calendar month: The period of duration from the same date of one month to the same date of the next month, and thus can be 28, 29 during a leap year, 30 or 31 days long. For example the duration from 21st January to 20th February
calendar months: plural form of calendar month
calendar spread: 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
calendar spreads: plural form of calendar spread
calendar year: 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.)
calendar year: The amount of time between corresponding dates in adjacent years in any calendar
calendar years: plural form of calendar year
calendar week: A period of seven consecutive days starting on Sunday, week
calendar day: a day reckoned from midnight to midnight
calendar day: period between two midnights, 24 hour day
calendar month: A calendar month is one of the twelve months of the year. Winners will be selected at the end of each calendar month
calendar month: A calendar month is the period from a particular date in one month to the same date in the next month, for example from April 4th to May 4th
calendar month: one of the 12 months of the year, space of time measured from the end of one month to the end of the next (according to the Gregorian calendar)
calendar month: one of the twelve divisions of the calendar year; "he paid the bill last month
calendar painting: visually attractive painting that lacks true artistic value (Art)
calendar year: A year that begins January 1 and ends December 31
calendar year: A fiscal year from January 1 to December 31
calendar year: Calendar year is often used in business to compare with the financial year. the period of time from January 1st to December 31st of the same year
calendar year: January 1 through December 31 of the same year Many deductible amount provisions are on a calendar year basis under major medical plans Also, benefits under basic hospital surgical and medical plans are usually stated as so much for each calendar year (H)
calendar year: January 1 through December 31 of the same year Under major medical plans, many deductible amount provisions are on based a calendar year Benefits under basic hospital surgical and medical plans are based on an amount per calendar year
calendar year: the period beginning January 1 of any year through December 31 of the same year
calendar year: Refers to any annual amounts that you have accumulated from January 1st through December 31st
calendar year: means the period beginning January 1, and ending December 31
calendar year: year according to the Gregorian calendar (12 months, January 1st to December 31st)
calendar year: A calendar year is a period of twelve months from January 1 to December
calendar year: A twelve-month period beginning January 1 and ending December 31
calendar year: The annual period running from January 1 through December 31 of a given year
calendar year: A year that ends on December 31
calendar year: A method of counting presence in the United States for tax purposes A person is considered in the US a calendar year if present at any time between January 1: December 31
calendar year: A calendar year is 12 consecutive months beginning January 1 and ending December 31
calendar year: The period covering January 1 through December 31 of any given year This term is usually used to calculate deductibles paid by a member
calendar year: Calendar year data in contrast, is more from an accounting perspective and contains information about each policy year For example, policy years 1980-1999 could all have transactions going on in calendar year 1999, and that is what calendar year information is showing - many policy years with activity within one calendar year
calendar year: the year (reckoned from January 1 to December 31) according to Gregorian calendar
calendar year: The normal January to December year, remarkable for the fact that no entity we deal with uses it See also, Fiscal, Academic years
calendar year: An entity's reporting year, covering 12 months and ending on December 31
calendar year: The period from January 1st through December 31st in a given year
calendar year: January 1 through December 31 of the same year For new enrollees, the calendar year begins on the effective date of their enrollment and ends on December 31 of the same year
calendar year: The accounting year beginning on January 1 and ending on December 31
calendar year: An entity's reporting year, covering 12 months and ending on December 31 (See: Fiscal year)
calendar year: The period commencing on a January 1 and ending on the next succeeding December 31
calendar year: A one year period starting January 1 and ending December 31 See also water year and irrigation year
calendar year: The period between Jan 1 and Dec 31 of any given year
Advent calendar: A calendar used to count down the days of Advent, having windows revealing a hidden picture or gift on each day
Gregorian calendar: The calendar currently used in the western world. It replaced the Julian calendar and was devised to halt the slow drift of the vernal equinox towards earlier in the year
Islamic calendar: A calendar system deviding the year into twelve months
Jewish calendar: The annual calendar used in Judaism. It determines the Jewish holidays, which Torah portions to read, Yahrzeits, and which set of Psalms should be read each day
Julian calendar: 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
lunar calendar: a calendar that measures the passage of the year according to the phases of the moon, as opposed to the revolution of the earth around the sun; a calendar of the lunar year
solar calendar: 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
Advent calendar: a picture on thick paper which has parts like doors with smaller pictures behind them. You open one door each day in December until Christmas
Chinese calendar: The traditional lunisolar calendar of the Chinese people, based on 24 seasonal segments each about 15 days long. An intercalary month is occasionally necessary to reconcile the lunar year with the solar year
French Republican Calendar: {i} Revolutionary calendar, calendar adopted by the French in 1793 during the French Revolution and given up in 1805, calendar which had 12 months of 30 days and each month comprised of three 10 day weeks (the months were given names that hinted to nature and season weather)
French republican calendar: Dating system adopted in 1793 during the French Revolution. It sought to replace the Gregorian calendar with a scientific and rational system that avoided Christian associations. The 12 months each contained three décades (instead of weeks) of 10 days each, and the year ended with five (six in leap years) supplementary days. The year began with the autumnal equinox and the day on which the National Convention had proclaimed France a republic, 1 Vendémiaire, Year I (Sept. 22, 1792). The other autumn months were named Brumaire and Frimaire; they were followed by the winter months Nivôse, Pluviôse, and Ventôse, the spring months Germinal, Floréal, and Prairial, and the summer months Messidor, Thermidor, and Fructidor. (All the names were derived from words for natural phenomena.) On Jan. 1, 1806, the Gregorian calendar was reestablished by the Napoleonic regime
Gregorian calendar: Christian calendar, calendar in use in the U.S. and most other countries
Gregorian calendar: the system of arranging the 365 days of the year in months and giving numbers to the years from the birth of Christ, used in the West since 1582 (Because it was introduced by Pope Gregory XIII). Solar dating system now in general use. It was proclaimed in 1582 by Pope Gregory XIII as a reform of the Julian calendar. By the Julian reckoning, the solar year comprised 365 1 4 days. The addition of a "leap day" every four years was intended to maintain correspondence between the calendar and the seasons; however, a slight inaccuracy in the measurement of the solar year caused the calendar dates of the seasons to regress almost one day per century. By Pope Gregory's time, the Julian calendar was 10 days out of sync with the seasons; in 1582, to bring the vernal equinox (and thus Easter) back to its proper date, 10 days were dropped (October 5 became October 15). Most of Catholic Europe soon adopted the new calendar; Great Britain and its colonies (1752) and Russia (1918) followed much later. The Gregorian calendar differs from the Julian only in that no century year is a leap year unless it is exactly divisible by 400 (e.g., 1600, 2000). A further refinement, the designation of years evenly divisible by 4,000 as common (not leap) years, will keep the calendar accurate to within one day in 20,000 years
Hebrew calendar: Jewish lunar calendar
Hegira calendar: the Muslim system of dividing a year of 354 days into 12 months and starting to count the years from the Hegira
Hindu calendar: The lunisolar calendar governing Hindu religious life and almost all Indian festivals and dating in its classic form from the fourth century The solar year is divided into 12 lunar months in accordance with the successive entrances of the sun into the signs of the zodiac, the months varying in length from 29 to 32 days
Islamic calendar: The lunar calendar used by Muslims, reckoned from the year of the Hegira in 622. See table at calendar
Jewish calendar: The lunisolar calendar used to mark the events of the Jewish year, dating the creation of the world at 3761 See table at calendar. or Hebrew calendar Religious and civil dating system based on both lunar and solar cycles. In the calendar used today, a day is counted from sunset to sunset, a week comprises 7 days, a month has 29 or 30 days, and a year has 12 lunar months plus approximately 11 days (or 353, 354, or 355 days). In order to bring the calendar in line with the annual solar cycle, a 13th month of 30 days is added in the 3rd, 6th, 8th, 11th, 14th, 17th, and 19th years of a 19-year cycle. Therefore, a leap year may have from 383 to 385 days. The Jewish calendar in use today was popularly accepted around the 4th century AD and is based on Biblical calculations placing the creation in 3761 BC
Jewish calendar: lunar based calendar which is used in the Jewish religion to determine the dates of holidays and other important events
Julian calendar: calendar introduced by Julius Caesar in 46 BCE
Julian calendar: The solar calendar introduced by Julius Caesar in Rome in 46 , having a year of 12 months and 365 days and a leap year of 366 days every fourth year. It was eventually replaced by the Gregorian calendar. See table at calendar. the calendar introduced by Julius Caesar in Rome in 46 BC, that fixed the normal year at 365 days. The Gregorian calendar, the usual calendar used in western countries in modern times, is based on the Julian calendar
Muslim calendar: Thus the year has either 354 or 355 days. No months are added as in leap years, so the named months do not remain in the same seasons but retrogress through the entire solar, or seasonal, year (of about 365 1 4 days) every 32 1 2 solar years
Muslim calendar: or Islamic calendar Dating system used in the Muslim world and based on a year of 12 months, each month beginning approximately at the time of the new moon. The months are alternately 30 and 29 days long except for the 12th, Dhu al-Hijjah, the length of which is varied in a 30-year cycle intended to keep the calendar in step with the true phases of the moon. In 11 years of this cycle, Dhu al-Hijjah has 30 days, and in the other 19 years it has
Revolutionary calendar: {i} French Republican Calendar, calendar adopted by the French in 1793 during the French Revolution and given up in 1805, calendar which had 12 months of 30 days and each month comprised of three 10 day weeks (the months were given names that hinted to nature and season weather)
Roman calendar: calendar used by the ancient Romans
Roman calendar: The lunar calendar used by the ancient Romans until the introduction of the Julian calendar in 46
calendared: past of calendar
calendaring: present participle of calendar
calendaring: is a process using a series of metal rolls at the end of a paper machine; when the paper is passed between these rolls it increases its smoothness and glossy surface
calendaring: ‑ Process of pressing fabric between rollers or plates to smooth and glaze
calendaring: A process of passing material between one or more rollers (calendars) under controlled heat and pressure
calendars: plural of calendar
calendars: Third-person singular indicative present tense of to calendar; sets a date for a hearing or trial on a court docket
church calendar: a calendar of the Christian year indicating the dates of fasts and festivals
greek calendar: Any of various calendars used by the ancient Greek states
greek calendar: The Julian calendar, used in the Greek Church
gregorian calendar: the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752
gregorian calendar month: a month in the Gregorian calendar
hebrew calendar: = Jewish calendar
hindu calendar: the lunisolar calendar governing the religious life of Hindus; an extra month is inserted after every month in which there are two new moons (once every three years)
hindu calendar month: any lunisolar month in the Hindu calendar
hindu, calendar: A lunisolar calendar of India, according to which the year is divided into twelve months, with an extra month inserted after every month in which two new moons occur (once in three years)
islamic calendar: the lunar calendar used by Muslims; dates from 622 AD (the year of the Hegira); the beginning of the Muslim year retrogresses through the solar year completing the cycle every 32 years
islamic calendar month: any lunar month in the Muslim calendar
jewish calendar: A lunisolar calendar in use among Hebraic peoples, reckoning from the year 3761 b
jewish calendar: the date traditionally given for the Creation
jewish calendar: (Judaism) the calendar used by the Jews; dates from 3761 BC (the assumed date of the creation of the world); a lunar year of 354 days is adjusted to the solar year by periodic leap years
jewish calendar month: a month in the Jewish calendar
julian calendar: by Julius Caesar and slightly modified by Augustus, establishing the 12-month year of 365 days with each 4th year having 366 days and the months having 31 or 30 days except for February
julian calendar: the solar calendar introduced in Rome in 46 b
lunar calendar: n calendar that follows marks the months based on the movements of the moon The Chinese calendar is the most well-known lunar calendar
lunar calendar: The calendar that calculates months by using the moon
lunar calendar: This calendar is based on the lunar months, which approximate the period of the lunation, with little or no regard for the solar year Because the solar year is about 365 days long and the lunar year of 12 lunar months is about 354 days long, the New Year's Day will occur approximately 11 days earlier each year In a strictly lunar calendar where there is no solar correction, the months will gradually drift backwards through the seasons around the year, and any month can eventually fall in any season The most familiar example of this is the Muslim calendar
lunar calendar: The hijrah (migration of Prophet Muhammad from Makkah to Madinah in 622 C E ), marks the starting point of the Muslim calendar, comprised of twelve lunar months (a lunar year is roughly eleven days shorter than a solar year (365 days), since each lunar month begins when the new moon’s crescent becomes visible every 29 or 30 days) Muslims use such a Hijri calendar for various religious obligations such as fasting during Ramadan, celebrating the two Eid holidays, and performing the Hajj Many contemporary sources on Islam include both the Gregorian (C E -common era or A D -anno domini) and Hijri (A H -after hijrah) dates for historical events For example, a citation of 974/1566 corresponds to the date of death of the Ottoman sultan Sulayman "The Magnificent" in A H and C E /A D values
lunar calendar: In their religious duties, Muslims depend on the solar and lunar calendars The latter is shorter than the solar by twelve days Fasting the month of Ramadhan, celebrating the two major feasts (Eid Al-Fitr and Eid Al-Adha), performing the pilgrimage to Makkah, and other religious activities depend upon the lunar months The timing of the daily prayers depend on the solar system
lunar calendar: a calendar based on lunar cycles
lunar calendar: A calendar based on the motion of the moon For most lunar calendars the month always begins with the new moon A strictly lunar calendar cannot stay synchronized with the seasons
lunisolar calendar: a calendar based on both lunar and solar cycles
manufacturing calendar: (Ticaret) shop calendar
mohammedan calendar: Thirty of its years constitute a cycle, of which the 2d, 5th, 7th, 10th, 13th, 16th, 18th, 21st, 24th, 26th, and 29th are leap years, having 355 days; the others are common, having 354 days
mohammedan calendar: A lunar calendar reckoning from the year of the hegira, 622 a
perpetual calendar: a chart or mechanical device that indicates the days of the week corresponding to any given date over a long period of years
perpetual calendar: A chart or mechanical device that indicates the day of the week corresponding to any given date over a period of many years
perpetual calendar: A calendar that can be used perpetually or over a wide range of years
perpetual calendar: That of Capt
perpetual calendar: Herschel covers, as given below, dates from 1750 to 1961 only, but is capable of indefinite extension
project calendar: (Ticaret) The definition of working and non-working days available for project tasks and activities
revolutionary calendar: the calendar adopted by the first French Republic in 1793 and abandoned in 1805; dates were calculated from Sept
revolutionary calendar: 22, 1792
revolutionary calendar month: a month in the Revolutionary calendar
roman calendar: It is said to have consisted originally of ten months, Martius, Aprilis, Maius, Junius, Quintilis, Sextilis, September, October, November, and December, having a total of 304 days
roman calendar: The calendar of the ancient Romans, from which our modern calendars are derived
roman calendar: In designating the days of the month, the Romans reckoned backward from three fixed points, the calends, the nones, and the ides
roman calendar: The nones came on the eighth day (the ninth, counting the ides) before the ides
roman calendar: Numa added two months, Januarius at the beginning of the year, and Februarius at the end, making in all 355 days
roman calendar: 12, the day before the ides, and Jan
roman calendar: The ides fell on the 15th in March, May, July (Quintilis), and October, and on the 13th in other months
roman calendar: Through abuse of power by the pontiffs to whose care it was committed, this calendar fell into confusion
roman calendar: 11, the third day before the ides (since the ides count as one), while Jan
roman calendar: the lunar calender in use in ancient Rome; replaced by the Julian calendar in 46 BC
roman calendar: Later the order of the months was changed so that January should come before February
roman calendar: 14 was the 19th day before the calends of February
roman calendar: 13 was called the ides of January, Jan
roman calendar: It was replaced by the Julian calendar
roman calendar: The calends were always the first day of the month
roman calendar: Thus, Jan
roman calendar: He also ordered an intercalary month, Mercedinus, to be inserted every second year
shop calendar: (Ticaret) The definition of operating or working days available for material and capacity planning, production order release and execution
solar calendar: a calendar based on solar cycles

Turkish - English

Definition of calendar in Turkish English dictionary
calendar dosyası: (Bilgisayar) calendar file
hicri takvim the Muslim calendar: (based on 622 A.D., the year of the Hegira)
saatli takvim calendar which shows the: times for the namaz

calendar

Hyphenation

cal·en·dar

Turkish pronunciation

kälındır

Synonyms

agenda, schedule, docket, almanac, annal, bulletin, card, chronology, daybook, diary, journal, lineup, list, log, logbook

Pronunciation

/ˈkaləndər/ /ˈkæləndɜr/

Etymology

[ 'ka-l&n-d&r ] (noun.) 13th century. From Old French calendier from Latin calendarium (“account book”), from calendae (“the first day of the month”), from calare (“to announce solemnly, to call out (the sighting of the new moon)”), from Proto-Indo-European *kel-.