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THREE PRINCIPAL CALENDARS
The Gregorian calendar is now in use as the civil calendar throughout most of the world. The Jewish calendar is the official calendar of the Jewish religious community. The Islamic calendar is the official calendar in many Muslim countries. Each calendar listed below begins with the first month of the year and includes the number of days each month contains. Many months have a variable number of days, as described below.
|The Gregorian calendar, introduced in 1582 by Pope Gregory XIII, is a corrected form of the Julian calendar. It is based on a solar year of 365 days. Every fourth year is a leap year of 366 days except for centenary years not evenly divisible by 400.||The Jewish year consists of twelve months defined by lunar cycles, with some years having a thirteenth month so that seasonal festivals stay aligned with the solar year. For religious purposes Nisan is the first month, but the New Year is celebrated in Tishri.||The Islamic calendar is based on the lunar year and contains 354 or 355 days. The number of days in each month varies with the lunar cycle. The beginning of the year retrogresses through the solar year, completing a full cycle every 32.5 years.|
|Months||Number of Days||Months||Number of Days||Months||Number of Days|
|January||31||Nisan||(Mar-Apr)||30||Muharram||29 or 30|
|February||28 or 29||Iyar||(Apr-May)||29||Safar||29 or 30|
|March||31||Sivan||(May-Jun)||30||Rabi I||29 or 30|
|April||30||Tammuz||(Jun-Jul)||29||Rabi II||29 or 30|
|May||31||Av||(Jul-Aug)||30||Jumada I||29 or 30|
|June||30||Elul||(Aug-Sep)||29||Jumada II||29 or 30|
|July||31||Tishri||(Sep-Oct)||30||Rajab||29 or 30|
|August||31||Heshvan||(Oct-Nov)||29 or 30||Shaʔban||29 or 30|
|September||30||Kislev||(Nov-Dec)||29 or 30||Ramadan||29 or 30|
|October||31||Tevet||(Dec-Jan)||29||Shawwal||29 or 30|
|November||30||Shevat||(Jan-Feb)||30||Dhu'l-Qa'dah||29 or 30|
|December||31||Adar||(Feb-Mar)||29 or 30||Dhu'l-Hijjah||29 or 30|
|Adar Sheni||(leap year only)||29|
cal•en•dar(ˈkæl ən dər)
2. the day or days intercalated. — embolic, embolismic, embolismical, adj.
2. Eastern Orthodoxy. a calendar of all festivals for martyrs and saints, with brief accounts of their lives. Also Menologion.
2. a church calendar, listing festivals for saints.
2. a heathen festival at the time of the new moon.
Calendaran orderly list of persons, things, or events; a list of offenders in the Newgate Calendar or in similar prisons or at Quarter Session Courts; a list or record.
Past participle: calendared
|Noun||1.||calendar - a system of timekeeping that defines the beginning and length and divisions of the year|
organization, arrangement, organisation, system - an organized structure for arranging or classifying; "he changed the arrangement of the topics"; "the facts were familiar but it was in the organization of them that he was original"; "he tried to understand their system of classification"
lunar calendar - a calendar based on lunar cycles
lunisolar calendar - a calendar based on both lunar and solar cycles
solar calendar - a calendar based on solar cycles
|2.||calendar - a list or register of events (appointments or social events or court cases etc); "I have you on my calendar for next Monday"|
docket - (law) the calendar of a court; the list of cases to be tried or a summary of the court's activities
|3.||calendar - a tabular array of the days (usually for one year)|
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
|Verb||1.||calendar - enter into a calendar|
schedule - plan for an activity or event; "I've scheduled a concert next week"
the Church calendar → el calendario eclesiástico
the university calendar (Brit) → el calendario universitario
the most important event in the sporting calendar → el acontecimiento más importante del año or calendario deportivo