Year

One year is about 365 days long (except in a leap year). It is the time it takes the Earth to go completely around (orbit) the sun once. A year is actually 365¼ days long, but a calendar has 365 days, except in a leap year.

The year starts on January 1 and ends on December 31 in the Gregorian calendar, but a fiscal year or a school year can start on a different day of the year.

There are several ways used to measure the length of a year.

  • a solar year is based on the seasons. The Gregorian calendar is based on the solar year. The solar year is 365 days long.
  • a lunar year is based on the moon and is usually 12 lunar months (29 days, 12 hours, 44 minutes each) or 354 days long.
  • a tropical year is the time between two vernal equinoxes, the first day of spring when the lengths of daylight and night are the same.
  • a sidereal year measures the time between when a selected fixed star is highest in the night sky.
  • an anomalistic year is the difference between the times when the Earth gets closest to the sun.
  • an eclipse year is the time between node passages. This is when the sun moves through a part of the sky where it is possible for the sun, Earth and moon to be in a line. It is also when eclipses can happen.

Solar and lunar years are used by different calendars for daily life. The other measurements are used by astronomers.

  • There was no year numbered "year zero" in a normal system of counting, because it would mean there is a year earlier than the first year, which was the year AD one in the Anno Domini system, also called 1 CE in the Common Era, used with our Gregorian calendar. However, some astronomers call the year 1 BC (or BCE) "year 0" to make it easier for them to count leap years before that year.
Year

January | February | March | April | May | June | July | August | September | October |November | December

Other Languages
Afrikaans: Jaar
Alemannisch: Jahr
አማርኛ: አመት
Ænglisc: Gēar
Аҧсшәа: Ашықәс
العربية: سنة
aragonés: Anyo
armãneashti: Anu
অসমীয়া: বছৰ
asturianu: Añu
Avañe'ẽ: Ro'y
Aymar aru: Mara
azərbaycanca: İl
تۆرکجه: ایل
বাংলা: বছর
Bân-lâm-gú:
Basa Banyumasan: Taun
башҡортса: Йыл
беларуская: Год
беларуская (тарашкевіца)‎: Год
भोजपुरी: साल
български: Година
Boarisch: Joar
བོད་ཡིག: ལོ་
bosanski: Godina
brezhoneg: Bloaz
буряад: Жэл
català: Any
Чӑвашла: Çулталăк
Cebuano: Tuig
čeština: Rok
Chamoru: Såkkan
chiShona: Gore
Cymraeg: Blwyddyn
dansk: År
davvisámegiella: Jahki
Deutsch: Jahr
dolnoserbski: Lěto
eesti: Aasta
Ελληνικά: Έτος
emiliàn e rumagnòl: An
English: Year
эрзянь: Ие
español: Año
Esperanto: Jaro
estremeñu: Añu
euskara: Urte
فارسی: سال
Fiji Hindi: Saal
føroyskt: Ár
Frysk: Jier
furlan: An
Gaeilge: Bliain
Gaelg: Blein
Gàidhlig: Bliadhna
贛語:
ગુજરાતી: વર્ષ
𐌲𐌿𐍄𐌹𐍃𐌺: 𐌾𐌴𐍂
客家語/Hak-kâ-ngî: Ngièn
한국어:
Hawaiʻi: Makahiki
հայերեն: Տարի
हिन्दी: वर्ष
hornjoserbsce: Lěto
hrvatski: Godina
Ido: Yaro
Ilokano: Tawen
Bahasa Indonesia: Tahun
interlingua: Anno
ᐃᓄᒃᑎᑐᑦ/inuktitut: ᐅᑭᐅᖅ
Iñupiak: Ukiuq
Ирон: Аз
íslenska: Ár
italiano: Anno
עברית: שנה
Basa Jawa: Taun
ಕನ್ನಡ: ವರ್ಷ
къарачай-малкъар: Джыл
ქართული: წელი
kaszëbsczi: Rok
қазақша: Жыл
kernowek: Bledhen
Kinyarwanda: Umwaka
Kiswahili: Mwaka
Kreyòl ayisyen: Lane
kurdî: Sal
Кыргызча: Жыл
кырык мары: И
Ladino: Anyo
лезги: Йис
ລາວ: ປີ
Latina: Annus
latviešu: Gads
Lëtzebuergesch: Joer
lietuvių: Metai
Limburgs: Jaor
Livvinkarjala: Vuozi
la .lojban.: nanca
lumbaart: Ann
magyar: Év
मैथिली: साल
македонски: Година
Malagasy: Taona
മലയാളം: വർഷം
Māori: Tau
मराठी: वर्ष
مصرى: سنه
Bahasa Melayu: Tahun
Baso Minangkabau: Tahun
Mìng-dĕ̤ng-ngṳ̄: Nièng
монгол: Жил
မြန်မာဘာသာ: သက္ကရာဇ်
Nederlands: Jaar
नेपाली: वर्ष
नेपाल भाषा: दँ
日本語:
Napulitano: Anno
нохчийн: Шо
Nordfriisk: Juar
norsk: År
norsk nynorsk: År
Nouormand: Aun
occitan: Annada
олык марий: Идалык
oʻzbekcha/ўзбекча: Yil
پنجابی: ورہ
پښتو: کال
Patois: Ier
Tok Pisin: Yia
Plattdüütsch: Johr
polski: Rok
português: Ano
română: An
Romani: Bersh
Runa Simi: Wata
русиньскый: Рік
русский: Год
саха тыла: Сыл
संस्कृतम्: वर्षः
sardu: Annu
Scots: Year
Sesotho sa Leboa: Ngwaga
shqip: Viti
sicilianu: Annu
සිංහල: වර්ෂය
سنڌي: سال
slovenčina: Rok
slovenščina: Leto
ślůnski: Rok (czas)
Soomaaliga: Sanad
کوردی: ساڵ
Sranantongo: Yari
српски / srpski: Година
srpskohrvatski / српскохрватски: Godina
Basa Sunda: Taun
suomi: Vuosi
svenska: År
Tagalog: Taon
தமிழ்: ஆண்டு
татарча/tatarça: Ел
తెలుగు: సంవత్సరము
ไทย: ปี
тоҷикӣ: Солҳо
Türkçe: Yıl
українська: Рік
اردو: سال
Vahcuengh: Bi
vèneto: An
Tiếng Việt: Năm
Võro: Aastak
walon: Anêye
West-Vlams: Joar
Winaray: Tuig
Wolof: At
吴语:
ייִדיש: יאר
Yorùbá: Ọdún
粵語:
Zeêuws: Jaer
žemaitėška: Metā
中文:
डोटेली: वर्ष
ГӀалгӀай: Шу
Kabɩyɛ: Pɩnaɣ