Spans of time: gyr • myr • millennia • centuries • decades • years • months • days
<nowiki>siglo; afe oha; öld; صٔدی; abad; æнус; century; پېړۍ; yüzyıl; صدی; storočie; століття; asyr; сядокиза; Jahrhundert; asr; শতিকা; век; Joarhundad; век; siècle; stoljeće; пинге; शतक; siècllo; век; Joerhonnert; århundre; əsr; senijiuri; siglo; قرن; kantved; ရာစုနှစ်; 世紀; кылым; sṳ-ki; sieglu; segle; быуат; yüzyıl; secol; aois; سده; 世纪; ieu; საუკუნე; 世紀; seculo; ƙarni; قرن; සියවස; saeculum; shelbersh; 世纪; ਸਦੀ; sécol; நூற்றாண்டு; стагодзьдзе; sèculu; ศตวรรษ; vijek; стороча; sècoło; ngwagakgolo; mācuīlpōhualxihuitl; tenpo sike ale; vuosisata; αιώνας; centurii; kansvledhen; век; դար; secol; sentenio; karne; qarni; sekel; 世紀; omžios; sècol; 世纪; yarcento; سەدە; 세기; eeuw; jarcento; abad; siglo; sieglo; ёмюр; даур; abad; ĕмĕр; നൂറ്റാണ്ട്; stolěśe; ғасыр; יארהונדערט; abad; lětstotk; thế kỷ; gatostuig; ოშწანურა; eeu; århundrede; бӏаьшу; pɩnzɩ mɩnɩʊ; mwaka wechizana; centurie; зуун; hundreår; shekulli; abad; abaik; aastagasada; ಶತಮಾನ; bonkámá; century; قرن; sa ro'y; seserre; sié-gī; hundgēar; évszázad; ክፍለ ዘመን; век; mende; jahkečuohti; вѣкъ; یوز ایل; pachakwata; Jahrhundert; бӏешо; стагоддзе; canrif; eeuwen; sedsal; शताब्दी; vijek; století; syiclle; ctona'a; sègle; מאה; гасыр; शताब्दी; Juarhunert; శతాబ్దం; ܕܪܐ; ásir; ꯆꯩꯍꯤꯆꯥ; taonjato; صدی; secolo; sè-kí; eêuw; syèk; sajandid; ieëf; século; siglo; гӏасру; ọ̀rúndún; শতাব্দী; século; yelataib; seiqgeij; ပီႁူဝ်ပၢၵ်ႇ; šimtmetis; stoletje; daang taon; 世紀; аср; secul; wiek; linn; tasut; gadsimts; үйэ; صدي; century; século; ابد; 世纪; ئەسىر (يۈزيىل); unidad de tiempo equivalente a 100 años; száz egymást követő év; 100 urteko denboraldia; единица измерения времени в 100 лет; Zeitspanne von einhundert Jahren; tréimhse 100 bliain; یکای زمان که صد سال است; период от време, обхващащ 100 години; periode der varer i 100 år; yüz yıllık zaman dilimi; سترہویصوی; tidsperiod som varar i 100 år; проміжок часу, дорівнює ста рокам; 100 సంవత్సరాలకు సమానమైన ఒక కాలమానం.; 100년의 시간 단위; mezurunuo de tempo; 100 jaroj; časový úsek trvající sto let; vremensko razdoblje u trajanju od 100 godina; periodo di tempo della durata di cento anni; sadan vuoden jakso; période de cent années; satuan waktu yang terdiri dari 100 tahun; пэрыяд часу працягласьцю 100 гадоў; 100 po sebe nasledujúcich rokov; unit of time lasting 100 years; període de cent anys; תקופה פון הונדערט יאר; khoảng thời gian bằng 100 năm; časowa jednotka sto lět; unidade de tempo equivalente a 100 anos; 時間單位，為 100 年; laika mērvienība, kas vienāda ar simts gadiem; paset ti panawen nga agpaut kadagiti 100 a tawen; јединица времена која траје 100 година; 100年; หน่วยเวลาที่คิด 100 ปี ต่อ 1 ศตวรรษ; unidade de tempo equivalente a 100 anos; stulecie, czyli okres 100 lat, rozpoczęte rokiem o końcowych cyfrach „01” i kończące się z najbliższym rokiem podzielnym przez 100, tj. z dwoma końcowymi zerami; Zäitspan vun 100 Joer; tidsperiode; tidsperiode; yüz il; unit masa 100 tahun lama; 100年間を指す呼称; 100 ವರ್ಷಗಳ ಕಾಲದ ಸಮಯ ಘಟಕ; razdoblje vremena u trajanju od 100 godina; período de cen anos; unidat di tempu ekivalente na 100 aña; 一百年; periòde de cent annadas; sec; század; сæдæаз; belaunaldi; lětstotk; столетие; столетие; 世紀; Centennium; Jhdt.; Hektode; Zentennium; Jh.; Jhd.; Jahrh.; Jhrh.; hundert Jahre; einhundert Jahre; thế kỉ; céad; centuria; столетие; вијек; столеће; стољеће; asır; 100 vuoden jakso; séculos; сто років; århundrade; stulecie; s.; vek; stoljeće; s.; kurun; ratus tahun; శతాబ్ది; 백년; 백 년; 100년; centenary; centennial; centurial; hundred years; one hundred years; jc; sècuło; stoljeće</nowiki>
English: A
century (plural
centuries) is a unit of time equal to 100 years.
In the traditional notation for common calendars (including the Gregorian or Julian calendars), AD and BC years are both counted positively and inclusively (from the same epoch), but year order is reversed in BC since numbers are still positive and there's also no "year zero" in any period (there's also no "century zero" and no "millenium zero" in these common calendars):
- the Nth century AD starts in the base year (N×100 − 99) AD, and ends in year (N×100) AD — these AD years in the Gregorian calendar are the same in astronomic years which are strictly positive for this AD period;
- the Nth century BC starts in the base year (N×100) BC, and ends in year (N×100 − 99) BC — you need to substract 1 from the BC (positive) years in the proleptic Gregorian calendar, before changing the sign to get astronomic years which are negative (or zero) for this BC period ; astronomical year numbering does use a minus sign and includes a "year 0", so year 1 BC is equal to astronomical year 0, which comes just after year 2 BC equal to astronomical year -1, and so forth.
So for example:
- the 21st century AD ends on 31 December 2100 AD, but starts on 1 January 2001 AD (which also start of the 3rd millenium AD, itself terminated on 31 December 3000 AD);
- the 10th century BC ends on 31 December 901 BC, but starts on 1 January 1000 BC (which also starts the 1st millenium BC, itself terminated on 31 December 1 BC, i.e. at end of astronomic year 0).
Note that both the Gregorian and Julian calendars still did not exist in that BC period, but both calendars are commonly extended today so that their "proleptic" year numbers do not even match each other, and also do not match with the prior calendars using different epochs (the old Royal calendars, then the Republican Roman calendar still used at start of the Roman Empire until 42 AD when the Julian calendar was finally regularized). The Gregorian calendar started to replace the Julian calendar only after 1584 AD (at different dates depending on countries), and became the
de facto worldwide standard (except for religious purposes) only during the 18th century AD, creating a shift with a dozen days skipped in the year where it was ordered (this difference continues to grow by one day at end of three of four centuries).
