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Japanese era name (年号, nengo, lit. year name) is a common calendar scheme used in Japan to count years. For example, 2004 is Heisei 16.Like similar systems in East Asia, the era name system was originally derived from Chinese Imperial practice, although the Japanese system is independent from the Chinese or Korean calendar systems. Unlike other similar systems, the Japanese era name is still in use. Government offices usually require era names and years for official papers.
Sometimes an era name is expressed with the first letter of the romanized name. For example, S55 means Showa 55. With 64 years, Showa is the longest era.
1 Modern era names
With the modernization of Japan after the ascension of the Meiji Emperor and now under current Japanese law since 1979, it has become practice to change era names only upon occasion of imperial succession. Also, the deceased emperor will thereafter be referred to as his corresponding era name posthumously. Under current law, only males can assume the throne.
In the Japanese language, the current emperor on the throne is almost always referred to as Tenno Heika (天皇陛下, His Majesty the Emperor) or rarely and less formally as Kinjo Tenno (今上天皇, current emperor) and even more rarely, if ever by his name Akihito. To call the current emperor by the current era name Heisei even in English would be a faux pas as it is and will be his posthumous name. This causes great confusion not only in other languages, but also for Japanese as he is known throughout the world only as Akihito. Also, his father the 124th emperor is called Hirohito throughout the world, but is always called the Showa Emperor in Japan.
In modern practice, the first year of a reign (元年 gannen) starts immediately upon the emperor's ascension to the throne, but always ends on December 31st. Subsequent years follow the Western calendar. Consequently, 1989 is known as both "Showa 64" and "Heisei Gannen", although technically Showa 64 ended on January 7th with Hirohito's death.
2 Historic era names
Historically however, prior to the Meiji Restoration, era names were changed on many different occasions such as celebration, major political incidents, natural disasters, and so on, but the emperors posthumous name never took the name of an era. Incidentally, on modern official papers, those who were born prior to the Meiji era did not write the era name in which they were born, but wrote Edo period (though now no one born over 130 years ago in that time period is still alive now).
3 Conversion table from eras to Gregorian calendar years
- 645 大化 Taika
- 650Events Arab conquest of Persia, establishment of Islam as state religion Births Deaths 650. 白雉 Hakuchi
- 654Events King Reccaswinth issues Visigothic law code. Rhodes invaded by Arab force. Remains of the Colossus of Rhodes sold off. September 17 Martin I arrives in Constantinople, where he is eventually deposed as pope by the emperor Constans II Eugene I elect (Discontinued)
- 672Events April 11 Adeodatus succeeds Vitalian as Pope. Short reign of Emperor Kobun of Japan Emperor Temmu ascends to the throne of Japan Wamba succeeds Reccaswinth as king of the Visigoths. Births Bede, monk, writer and historian (approximate date) Deaths 白鳳 Hakuho
- 686Events October 21 Conon becomes Pope, succeeding Pope John V. Empress Jito ascends to the throne of Japan Kingdom of Kent attacked and conquered by West Saxons under Caedwalla Births August 23 Charles Martel, winner of the Battle of Tours Deaths Emperor T 朱鳥 Shucho
- 686Events October 21 Conon becomes Pope, succeeding Pope John V. Empress Jito ascends to the throne of Japan Kingdom of Kent attacked and conquered by West Saxons under Caedwalla Births August 23 Charles Martel, winner of the Battle of Tours Deaths Emperor T (Discontinued)
- 701Events September 30 John VI succeeds Sergius I as Pope. Witiza succeeds his grandfather Egica as king of the Visigoths. Liutpert succeeds his father Perctarit as king of the Lombards Raginpert overthrows Liutpert and becomes king of the Lombards. He dies 大宝 Daiho or Taiho
- 704Events Justinian II re-takes the throne of the Byzantine Empire Cenred succeeds to the throne of Mercia after his uncle Aethelred abdicates to become abbot of Bardney Births Deaths Adamnan, abbot of Iona 704. 慶雲 Keiun
- 708Events The Japanese court moved from Heian to Nara. March 25 Constantine is consecrated Pope Births Deaths February 4 Pope Sisinnius Drogo, duke in Champagne 708. 和銅 Wado
- 715 霊亀 Reiki
- 717 養老 Yoro
- 724 神亀 Jinki
- 729 天平 Tempyo
- 749 天平感宝 Tempyo-kampo
- 749 天平勝宝 Tempyo-shoho
- 757 天平宝字 Tempyo-hoji
- 765 天平神護 Tempyo-jingo
- 767 神護景雲 Jingo-keiun
- 770 宝亀 Hoki
- 781 天応 Ten'o
- 782 延暦 Enryaku
- 806 大同 Daido
- 810 弘仁 Konin
- 824 天長 Tencho
- 834 承和 Jowa or Showa
- 848 嘉祥 Kajo
- 851 仁寿 Ninju
- 854 斉衡 Saiko
- 857 天安 Tennan
- 859 貞観 Jogan
- 877 元慶 Genkei or Gangyo
- 885 仁和 Ninna
- 889 寛平 Kanpyo
- 898 昌泰 Shotai
- 901 延喜 Engi
- 923 延長 Encho
- 931 承平 Johei or Shohei
- 938 天慶 Tengyo
- 947 天暦 Tenryaku
- 957 天徳 Tentoku
- 961 応和 Owa
- 964 康保 Koho
- 968 安和 Anna
- 970 天禄 Tenroku
- 973 天延 Ten'en
- 976 貞元 Jogen
- 978 天元 Tengen
- 983 永観 Eikan
- 985 寛和 Kanna
- 987 永延 Eien
- 988 永祚 Eiso
- 990 正暦 Shoryaku
- 995 長徳 Chotoku
- 999 長保 Choho
- 1004 寛弘 Kanko
- 1012 長和 Chowa
- 1017 寛仁 Kannin
- 1021 治安 Jian
- 1024 万寿 Manju
- 1028 長元 Chogen
- 1037 長暦 Choryaku
- 1040 長久 Chokyu
- 1044 寛徳 Kantoku
- 1046 永承 Eisho or Eijo
- 1053 天喜 Tengi
- 1058 康平 Kohei
- 1065 治暦 Jiryaku
- 1069 延久 Enkyu
- 1074 承保 Joho
- 1077 承暦 Shoryaku or Joryaku
- 1081 永保 Eiho
- 1084 応徳 Otoku
- 1087 寛治 Kanji
- 1094 嘉保 Kaho
- 1096 永長 Eicho
- 1097 承徳 Jotoku
- 1099 康和 Kowa
- 1104 長治 Choji
- 1106 嘉承 Kajo
- 1108 天仁 Tennin
- 1110 天永 Ten'ei
- 1113 永久 Eikyu
- 1118 元永 Gen'ei
- 1120 保安 Hoan
- 1124 天治 Tenji
- 1126 大治 Daiji
- 1131 天承 Tensho or Tenjo
- 1132 長承 Chosho or Chojo
- 1135 保延 Hoen
- 1141 永治 Eiji
- 1142 康治 Koji
- 1144 天養 Ten'yo
- 1145 久安 Kyuan
- 1151 仁平 Nimpei or Nimpyo
- 1154 久寿 Kyuju
- 1156 保元 Hogen
- 1159 平治 Heiji
- 1160 永暦 Eiryaku
- 1161 応保 Oho
- 1163 長寛 Chokan
- 1165 永万 Eiman
- 1166 仁安 Ninnan
- 1169 嘉応 Kao
- 1171 承安 Joan or Joan
- 1175 安元 Angen
- 1177 治承 Jisho or Jijo
- 1181 養和 Yowa
- 1182 寿永 Juei
- 1184 元暦 Genryaku
- 1185 文治 Bunji
- 1190 建久 Kenkyu
- 1199 正治 Shoji
- 1201 建仁 Kennin
- 1204 元久 Genkyu
- 1206 建永 Ken'ei
- 1207 承元 Jogen
- 1211 建暦 Kenryaku
- 1213 建保 Kempo
- 1219 承久 Jokyu
- 1222 貞応 Joo
- 1224 元仁 Gennin
- 1225 嘉禄 Karoku
- 1227 安貞 Antei
- 1229 寛喜 Kanki or Kangi
- 1232 貞永 Joei
- 1233 天福 Tenpuku
- 1234 文暦 Bunryaku
- 1235 嘉禎 Katei
- 1238 暦仁 Ryakunin
- 1239 延応 En'o
- 1240 仁治 Ninji
- 1243 寛元 Kangen
- 1247 宝治 Hoji
- 1249 建長 Kencho
- 1256 康元 Kogen
- 1257 正嘉 Shoka
- 1259 正元 Shogen
- 1260 文応 Bun'o
- 1261 弘長 Kocho
- 1264 文永 Bun'ei
- 1275 建治 Kenji
- 1278 弘安 Koan
- 1288 正応 Shoo
- 1293 永仁 Einin
- 1299 正安 Shoan
- 1302 乾元 Kengen
- 1303 嘉元 Kagen
- 1306 徳治 Tokuji
- 1308 延慶 Enkei or Enkyo
- 1311 応長 Ocho
- 1312 正和 Showa
- 1317 文保 Bumpo
- 1319 元応 Gen'o
- 1321 元亨 Genkyo or Genko
- 1324 正中 Shochu
- 1326 嘉暦 Karyaku
- 1329 元徳 Gentoku
- 1331 元弘 Genko
- 1334 建武 Kemmu
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