Calendar year - Wikipedia

Generally speaking, a calendar year begins on the New Year's Day of the given calendar system and ends on the day before the following New Year's Day, ... Calendaryear FromWikipedia,thefreeencyclopedia Jumptonavigation Jumptosearch Periodoftimefromacalendar'sNewYear'sDaytothedaybeforethenextNewYear'sDay Thisarticleneedsadditionalcitationsforverification.Pleasehelpimprovethisarticlebyaddingcitationstoreliablesources.Unsourcedmaterialmaybechallengedandremoved.Findsources: "Calendaryear" – news ·newspapers ·books ·scholar ·JSTOR(June2009)(Learnhowandwhentoremovethistemplatemessage) Generallyspeaking,acalendaryearbeginsontheNewYear'sDayofthegivencalendarsystemandendsonthedaybeforethefollowingNewYear'sDay,andthusconsistsofawholenumberofdays.Ayearcanalsobemeasuredbystartingonanyothernameddayofthecalendar,andendingonthedaybeforethisnameddayinthefollowingyear.[1]Thismaybetermeda"year'stime",butnota"calendaryear".Toreconcilethecalendaryearwiththeastronomicalcycle(whichhasafractionalnumberofdays)certainyearscontainextradays("leapdays"or"intercalarydays"). TheGregorianyear,whichisinuseinmostoftheworld,beginsonJanuary1andendsonDecember31.Ithasalengthof365daysinanordinaryyear,with8760hours,525,600minutes,or31,536,000seconds;but366daysinaleapyear,with8784hours,527,040minutes,or31,622,400seconds.With97leapyearsevery400years,theyearhasanaveragelengthof365.2425days.Otherformula-basedcalendarscanhavelengthswhicharefurtheroutofstepwiththesolarcycle:forexample,theJuliancalendarhasanaveragelengthof365.25days,andtheHebrewcalendarhasanaveragelengthof365.2468days.TheIslamiccalendarisalunarcalendarconsistingof12monthsinayearof354or355days. EachGregorianyearhas179even-numbereddays;ordinaryyearshave186odd-numbereddays,butleapyearshave187odd-numbereddays. Theastronomer'smeantropicalyear,whichisaveragedoverequinoxesandsolstices,iscurrently365.24219days,slightlyshorterthantheaveragelengthoftheyearinmostcalendars,buttheastronomer'svaluechangesovertime,soJohnHerschel'ssuggestedcorrectiontotheGregoriancalendarmaybecomeunnecessarybytheyear4000. Quarters[edit] Thecalendaryearcanbedividedintofourquarters,oftenabbreviatedasQ1,Q2,Q3,andQ4. IntheGregoriancalendar: Firstquarter,Q1:1January–31March(90daysor91daysinleapyears) Secondquarter,Q2:1April–30June(91days) Thirdquarter,Q3:1July–30September(92days) Fourthquarter,Q4:1October–31December(92days) WhileintheChinesecalendar,thequartersaretraditionallyassociatedwiththe4seasonsoftheyear: Spring:1stto3rdmonth Summer:4thto6thmonth Autumn:7thto9thmonth Winter:10thto12thmonth Seealso[edit] Academicterm Calendarreform Commonyear Fiscalyear ISO8601 ISOweekdate Leapyear Modelyear Tropicalyear Seasonalyear References[edit] ^"calendaryear".Merriam-Webster.Retrieved6August2014. Retrievedfrom"https://en.wikipedia.org/w/index.php?title=Calendar_year&oldid=1088727896" Categories:CalendarsUnitsoftimeTypesofyearHiddencategories:ArticleswithshortdescriptionShortdescriptionisdifferentfromWikidataArticlesneedingadditionalreferencesfromJune2009Allarticlesneedingadditionalreferences Navigationmenu Personaltools NotloggedinTalkContributionsCreateaccountLogin Namespaces ArticleTalk English Views ReadEditViewhistory More Search Navigation MainpageContentsCurrenteventsRandomarticleAboutWikipediaContactusDonate Contribute HelpLearntoeditCommunityportalRecentchangesUploadfile Tools WhatlinkshereRelatedchangesUploadfileSpecialpagesPermanentlinkPageinformationCitethispageWikidataitem Print/export DownloadasPDFPrintableversion Languages CatalàDanskDeutschEestiΕλληνικάEspañolفارسیहिन्दीHrvatskiBahasaIndonesiaNederlands日本語NorskbokmålNorsknynorskPortuguêsRomânăРусскийSlovenčinaСрпски/srpskiSrpskohrvatski/српскохрватскиSuomiSvenskaதமிழ்ไทยУкраїнськаTiếngViệtVõro Editlinks