The following table is meant as a quick guideline to Japanese era names since 645 CE. Dates are provided down to the month (lunar months up to the end of 1872). It should be remembered that reigns end and begin in the same year, so that one calendar year may contain both the last year of the old reign and the first year of the new reign. The Shōwa Emperor, for example, died on January 7, 1989, meaning that 1989 was both Shōwa 64 and Heisei 1, with the latter starting from January 8, the day after the emperor's death. The very rough listing of historical events relies heavily on the chronologies in The Cambridge History of Japan, although in some cases preference has been given to Japanese sources. Corrections to mistakenly entered data will be gratefully received.

Note: Intercalary months are indicated by an asterisk.

Dates (CE)

Era Name
(Japanese)
Era Name (English) Historical Events and Comments
645.6 - 650.2 大化 Taika 645 Taika (Great) Reform; capital moved to Naniwa.
650.2 - 654.10 白雉
(白鳳)
Hakuchi (Hakuhō) Hakuhō can be used to refer to the same era as Hakuchi, occupying the latter half of the reign of Emperor Kōtoku. Hakuhō was also apparently used intermittently as an unofficial era name until 686. The Hakuhō period in art generally refers to the years between the Taika Reform of 645 and the establishment of the capital in Nara in 710.
654.10 - 686.7 (白鳳) (Hakuhō) No official era name exists for this period, although "Hakuhō" seems to have been used occasionally on an unofficial basis. The Hakuchi/Hakuhō ambiguity is further compounded by scholars who contend that "Hakuhō" refers to a period (661-683) under the "Kyūshū court" as postulated by Yoshida Takehiko.

667 Capital moved to Ōtsu in Ōmi Province.

686.7 - 686.9 朱鳥 Shuchō

The era officially ended with the death of Emperor Tenmu, but the name continued in unofficial use through the reign of Empress Jitō (r. 690-97).

694 Capital moved to Fujiwara in Yamato Province.

701.3 - 704.5 大宝 Taihō  
704.5 - 708.1 慶雲 Keiun  
Nara Period
(710 - 794)
     
708.1 - 715.9 和銅 Wadō 710 Capital moved to Heijō-kyō (Nara).
712 Kojiki completed by Ō no Yasumaro.
715.9 - 717.11 霊亀 Reiki  
717.11 - 724.2 養老 Yōrō 718 Yōrō civil and penal codes compiled.
720 Nihon shoki completed.
724.2 - 729.8 神亀 Jinki  
729.8 - 749.4 天平 Tenpyō  
749.4 - 749.7 天平感宝 Tenpyō Kanpō  
749.7 - 757.8 天平勝宝 Tenpyō Shōhō 752 Great Buddha of Tōdaiji completed.
754 Priest Ganjin arrives from China.
756 Shōsōin constructed.
757.8 - 765.1 天平宝字 Tenpyō
Hōji
759 Last dated poem of the Man'yōshū.
764 Revolt of Fujiwara no Nakamaro crushed.
765.1 - 767.8 天平神護 Tenpyō Shingo  
767.8 - 770.9 神護景雲 Jingo Keiun  
770.10 - 780.12 宝亀 Hōki 770 Priest Dōkyō exiled.
781.1 - 782.8 天応 Ten'ō  
Heian Period
(794 - 1192)
     
782.8 - 806.5 延暦 Enryaku 784 Capital moved to Nagaoka.
788 Priest Saichō builds Enryakuji.
794 Capital moved to Heian-kyō (Kyoto)
806.5 - 810.9 大同 Daidō  
810.9 - 824.1 弘仁 Kōnin 811 Emishi defeated after thirty years of conflict.
824.1 - 834.1 天長 Tenchō 832 Priest Kūkai established a Shingon chapel inside the imperial palace.
834.1 - 848.6 承和 Jōwa 847 Priest Ennin returns from China, introducing Tendai and Mikkyō pactices.
848.6 - 851.4 嘉祥 Kashō  
851.4 - 854.11 仁寿 Ninju  
854.11 - 857.2 斉衡 Saikō  
857.2 - 859.4 天安 Tennan  
859.4 - 877.4 貞観 Jōgan 866 Fujiwara no Yoshifusa the first person not of the imperial family to receive the title of regent (sesshō).
877.4 - 885.2 元慶 Gangyō  
885.2 - 889.4 仁和 Ninna  
889.4 - 898.4 寛平 Kanpei 894 Plan to send an embassy to T'ang China is canceled.
898.4 - 901.7 昌泰 Shōtai  
901.7 - 923.4* 延喜 Engi 901 Nihon sandai jitsuroku, last of the Six National Histories, completed.
905 Kokinshū compiled.
923.4* - 931.4 延長 Enchō  
931.4 - 938.5 丞平 Shōhei 935 Jōhei-Tengyō Disturbance begins.
937.5 - 947.4 天慶 Tengyō 941 Fujiwara no Tadahira is appointed kanpaku, a title henceforth used for regents of adult emperors.
947.4 - 957.10 天暦 Tenryaku  
957.10 - 961.2 天徳 Tentoku  
961.2 - 964.7 応和 Ōwa  
964.7 - 968.8 康保 Kōhō  
968.8 - 970.3 安和 Anna  
970.3 - 973.12 天禄 Tenroku  
973.12 - 976.7 天延 Ten'en  
976.7 - 978.11 貞元 Jōgen  
978.11 - 983.4 天元 Tengen  
983.4 - 985.4 永観 Eikan  
985.4 - 987.4 寛和 Kanwa 985 Priest Genshin writes Ōjō yōshū (The Essentials of Rebirth in the Pure Land).
987.4 - 989.8 永延 Eien  
989.8 - 990.11 永祚 Eiso  
990.11 - 995.2 正暦 Shōryaku  
995.2 - 999.1 長徳 Chōtoku 995 Fujiwara no Michinaga becomes nairan ("private inspector"), cementing his control over the court; until 1027, the height of Fujiwara influence.
999.1 - 1004.7 長保 Chōho Makura no sōshi (The Pillow Book) by Sei Shōnagon largely completed by this time.
1004.7 - 1012.12 寛弘 Kankō Genji monogatari (The Tale of Genji) by Murasaki Shikibu completed about this time.
1012.12 - 1017.4 長和 Chōwa  
1017.4 - 1021.2 寛仁 Kan'in  
1021.2 - 1024.7 治安 Jian  
1024.7 - 1028.7 万寿 Manju  
1028.7 - 1037.4 長元 Chōgen 1028 Revolt of Taira no Tadatsune (surrenders to Minamoto no Yorinobu in 1031).
1037.4 - 1040.11 長暦 Chōryaku  
1040.11 - 1044.11 長久 Chōkyū  
1044.11 - 1046.4 寛徳 Kantoku  
1046.4 - 1053.1 永承 Eishō 1051 Beginning of the Earlier Nine Years' War under Minamoto no Yoriyoshi.
1053.1 - 1058.8 天喜 Tenki 1053 Hōōdō (Phoenix Hall) constructed at the Byōdōin by Minamoto no Yorimichi.
1058.8 - 1065.8 康平 Kōhei 1063 Yoriyoshi secretly builds shrine dedicated to Hachiman in Sagami Province.
1065.8 - 1069.4 治暦 Jiryaku 1068 Emperor Go-Sanjō becomes the first emperor in 170 years whose mother is not a Fujiwara.
1069.4 - 1074.8 延久 Enkyū  
1074.8 - 1077.11 承保 Shōhō  
1077.11 - 1081.2 承暦 Shōryaku  
1081.2 - 1084.2 永保 Eiho  
1084.2 - 1087.2 応徳 Ōtoku  
1087.2 - 1094.12 寛治 Kanji 1087 Emperor Shirakawa abdicates and establishes the Senior Retired Emperor's Office (in-no-chō).
1094.12 - 1096.12 嘉保 Kahō  
1096.12 - 1097.11 永長 Eichō  
1097.11 - 1099.8 承徳 Shōtoku  
1099.8 - 1104.2 康和 Kōwa  
1104.2 - 1106.4 長治 Chōji  
1106.4 - 1108.8 嘉承 Kashō  
1108.8 - 1110.7 天仁 Tennin  
1110.7 - 1112.7 天永 Ten'ei  
1113.7 - 1118.4 永久 Eikyū  
1118.4 - 1120.4 元永 Genei  
1120.4 - 1124.4 保安 Hōan  
1124.4 - 1126.1 天治 Tenji  
1126.1 - 1131.1 大治 Taiji 1129 The retired emperor Toba, Shirakawa's grandson, becomes senior retired emperor; he relies on the Ise Heishi for military support.
1131.1 - 1132.8 天承 Tenshō  
1132.8 - 1135.4 長承 Chōshō  
1135.4 - 1141.7 保延 Hōen  
1141.7 - 1142.4 永治 Eiji  
1142.4 - 1144.2 康治 Kōji
1144.2 - 1145.7 天養 Ten'yō  
1145.7 - 1151.1 久安 Kyūan
1151.1 - 1154.10 仁平 Ninpei  
1154.10 - 1156.4 久寿 Kyūju  
1156.4 - 1159.4 保元 Hogen 1156 Hogen Disturbance; Taira no Kiyomori and Minamoto no Yoshitomo support victorious Emperor Go-Shirakawa.
1159.4 - 1160.1 平治 Heiji 1159 Heiji DIsturbance; Kiyomori foils Yoshitomo's attempted coup.
1160.1 - 1161.9 永暦 Eiryaku  
1161.9 - 1163.3 応保 Ōhō  
1163.3 - 1165.6 長寛 Chōkan  
1165.6 - 1166.8 永万 Eiman  
1166.8 - 1169.4 仁安 Nin'an 1167 Taira no Kiyomori becomes chancellor  (dajōdaijin).
1169.4 - 1171.4 嘉応 Kaō  
1171.4 - 1175.7 承安 Shōan  
1175.7 - 1177.8 安元 Angen 1175 Priest Hōnen preaches Pure Land teachings in Kyoto, leading to formation of the popular Pure Land sect.
1177.8 - 1181.7 治承 Jishō 1181 Death of Kiyomori.
1181.7 - 1182.5 養和 Yōwa  
1182.5 - 1184.4 寿永 Juei  
1184.4 - 1185.8 元暦 Genryaku  
1185.8 - 1190.4 文治 Bunji 1185 Final defeat of the Heike by Minamoto no Yoshitsune at Dan-no-ura.
Kamakura Period
(1192 - 1333)
     
1190.4 - 1199.4 建久 Kenkyū 1192 Kamakura Bakufu established by Minamoto no Yoritomo.
1199.4 - 1201.2 正治 Shōji 1199 Death of Yoritomo.
1201.2 - 1204.2 建仁 Kennin  
1204.2 - 1206.4 元久 Genkyū 1204 Assassination of Minamoto no Yoriie by Hōjō Tokimasa.
1206.4 - 1207.10 建永 Ken'ei  
1207.10 - 1211.3 承元 Shōgen  
1211.3 - 1213.12 建暦 Kenryaku  
1213.12 - 1219.4 建保 Kenpō  
1219.4 - 1222.4 承久 Jōkyū 1221 Jōkyū Disturbance results in stronger bakufu control.
1222.4 - 1224.11 貞応 Jōō  
1224.11 - 1225.4 元仁 Gennin
1225.4 - 1227.12 嘉禄 Karoku  
1227.12 - 1229.3 安貞 Antei  
1229.3 - 1232.4 寛喜 Kanki  
1232.4 - 1233.4 貞永 Jōei 1232 Jōei (or, more properly, Goseibai) Code promulgated; 51 articles governing samurai behavior.
1233.4 - 1234.11 天福 Tenpuku  
1234.11 - 1235.9 文暦 Bunryaku  
1235.9 - 1238.11 嘉禎 Katei  
1238.11 - 1239.2 暦仁 Ryakunin  
1239.2 - 1240.7 延応 En'ō  
1240.7 - 1243.2 仁治 Ninji  
1243.2 - 1247. 2 寛元 Kangen 1244 Construction of Eiheiji.
1247.2 - 1249.3 宝治 Hōji  
1249.3 - 1256.10 建長 Kenchō  
1256.10 - 1257.3 康元 Kōgen  
1257.3 - 1259.3 正嘉 Shōka  
1259.3 - 1260.4 正元 Shōgen  
1260.4 - 1261.2 文応 Bun'ō  
1261.2 - 1264.2 弘長 Kōchō  
1264.2 - 1275.4 文永 Bun'ei 1266 Kublai Khan seeks relations with Japan, sends envoys in 1268.
1274 Mongols attempt first invasion of Japan.
1275.4 - 1278.2 建治 Kenji  
1278.2 - 1288.4 弘安 Kōan 1281 Mongols attempt second invasion of Japan.
1288.4 - 1293.8 正応 Shōō  
1293.8 - 1299.4 永仁 Einin  
1299.4 - 1302.11 正安 Shōan  
1302.11 - 1303.8 乾元 Kengen  
1303.8 - 1306.12 嘉元 Kagen  
1306.12 - 1308.10 徳治 Tokuji  
1308.10 - 1311.4 延慶 Enkyō  
1311.4 - 1312.3 応長 Ōchō  
1312.3 - 1317.2 正和 Shōwa  
1317.2 - 1319.4 文保 Bunpō 1318 Emperor Go-Daigo ascends throne.
1319.4 - 1321.2 元応 Gen'ō  
1321.2 - 1324.12 元亨 Genkō  
1324.12 - 1326.4 正中 Shōchū  
1326.4 - 1329.8 嘉暦 Karyaku  
1329.8 - 1331.8 元徳 Gentoku  
Muromachi Period
(1333 - 1573)
     
1331.8 - 1334.1 元弘 Genkō

Emperor Go-Daigo's court continued to use "Genkō" until 1334.1, although Emperor Kōgon promulgated the "Shōkyō" era name in 1332.4. The Shōkyō era marks the start of alternative reign names that continued throughout the Northern and Southern Courts period (1336-92).

1333  Kamakura Bakufu overthrown.

1334.1 - 1336.2 建武 Kenmu "Kenmu" was used by Emperor Go-Daigo until 1336.2, when the era name for the Southern Court was changed to "Engen." The Northern Court under Emperor Kōmyō continued to use "Kenmu" until 1338.8, when the era name was changed to "Ryakuō."
1336.2 - 1340.4 延元 Engen

1336 Beginning of reign names considered exclusive to the Southern Court (gray shading).

(Engen 1; also counted as Kenmu 3) Beginning of the Northern and Southern Courts period (until 1392), with Emperor Go-Daigo at Yoshino and Emperor Kōmyō in Kyoto).

1340.4 - 1346.12 興国 Kōkoku  
1346.12 - 1370.7 正平 Shōhei  
1370.7 - 1372.10 建徳 Kentoku  
1372.10 - 1375.5 文中 Bunchū  
1375.5 - 1381.2 天授 Tenju  
1381.2 - 1384.4 弘和 Kōwa  
1384.4 - 1392.10* 元中 Genchū  
1332.4 - 1334.1 正慶 Shōkyō 1332 Beginning of reign names considered exclusive to the Northern Court; "Shōkyō" was used at the court of Emperor Kōgon (r. 1331-1333).
1338.8 - 1342.4 暦応 Ryakuō 1338 Muromachi Bakufu established in Kyoto by Ashikaga Takauji.
1342.4 - 1345.10 康永 Kōei  
1345.10 - 1350.2 貞和 Jōwa  
1350.2 - 1352.9 観応 Kannō  
1352.9 - 1356.3 文和 Bunwa  
1356.3 - 1361.3 延文 Enbun 1358 Death of Ashikaga Takauji.
1361.3 - 1362.9 康安 Kōan  
1362.9 - 1368.2 貞治 Jōji  
1368.2 - 1375.2 応安 Ōan  
1375.2 - 1379.3 永和 Eiwa  
1379.3 - 1381.2 康暦 Kōryaku  
1381.2 - 1384.2 永徳 Eitoku  
1384.2 - 1387.8 至徳 Shitoku
1387.8 - 1389.2 嘉慶 Kakei  
1389.2 - 1390.3 康応 Kōō  
1390.3 - 1394.7 明徳 Meitoku

1391-92 Meitoku Rebellion put down by Muromachi Bakufu.
1392 Reunification of Northern and Southern Courts in Meitoku 3 (Genchū 9 for the Southern Court).

1394 - 1428.4 応永 Ōei 1397 Kinkakuji built by Ashikaga Yoshimitsu.
1428.4 - 1429.9 正長 Shōchō  
1429.9 - 1441.2 永享 Eikyō  
1441.2 - 1444.2 嘉吉 Kakitsu 1441 Kakitsu Disturbance, resulting in assassination of Ashikaga Yoshinori.
1444.2 - 1449.7 文安 Bun'an  
1449.7 - 1452.7 宝徳 Hōtoku  
1452.7 - 1455.7 享徳 Kyōtoku  
1455.7 - 1457.9 康正 Kōshō
1457.9 - 1460.12 長禄 Chōroku  
1460.12 - 1466.2 寛正 Kanshō
1466.2 - 1467.3 文正 Bunshō  
1467.3 - 1469.4 応仁 Ōnin 1467 Ōnin War begins, continuing until 1477.
1469.4 - 1487.7 文明 Bunmei 1480s Sengoku (Warring States) daimyō emerge (the Sengoku period is sometimes said to start in 1467, sometimes in 1493; the end is variously marked at 1568, 1573, or 1590).
1487.7 - 1489.8 長享 Chōkyō  
1489.8 - 1492.7 延徳 Entoku  
1492.7 - 1501.2 明応 Meiō  
1501.2 - 1504.2 文亀 Bunki  
1504.2 - 1521.8 永正 Eishō
1521.8 - 1528.8 大永 Taiei  
1528.8 - 1532.7 享禄 Kyōroku  
1532.7 - 1555.10 天文 Tenbun

1543 Portuguese traders introduce Western muskets and canon into Japan.
1549 Francis Xavier lands at Kagoshima and begins Christian mission.

1555.10 - 1558.2 弘治 Kōji  
1558.2 - 1570.4 永禄 Eiroku 1560 Oda Nobunaga defeats Imagawa Yoshimoto in the Battle of Okehazama, concludes an alliance with Tokugawa Ieyasu in 1562.
1570.4 - 1573.7 元亀 Genki 1571 Nobunaga destroys Enryakuji, headquarters of the Tendai sect on Mt. Hiei near Kyoto.
Azuchi-Momoyama
Period (1573-1600)
     
1573.7 - 1592.12 天正 Tenshō

1582 Nobunaga betrayed by Akechi Mitsuhide; Toyotomi Hideyoshi avenges Nobunaga's death, enters Osaka Castle in 1583.
1585 Hideyoshi becomes imperial regent (kanpaku).
1592 After defeating the Go-Hōjō at Odawara in 1590, Hideyoshi invades Korea; truce reached in 1596.

1592.12 - 1596.10 文禄 Bunroku  
Edo Period
(1600 - 1867)
     
1596.10 - 1615.7 慶長 Keichō

1597 Hideyoshi moves to Osaka Castle, orders second invasion of Korea.
1598 Hideyoshi dies and Japanese armies leave Korea.
1600 Tokugawa Ieyasu wins victory in the Battle of Sekigahara, achieving military predominance; Edo (Tokugawa) Bakufu established in 1603.
1615 Defeat of Toyotomi Hideyori at Osaka.

1615.7 - 1624.2 元和 Genna 1616 Death of Ieyasu, interred first at Mt. Kunō in Shizuoka and later at Nikkō.
1624.2 - 1644.12 寛永 Kan'ei

1617 Western trading ships limited to Nagasaki and Hirado; Japanese ships prohibited from travelling abroad in 1635; Chinese traders limited to Nagasaki the same year; Portuguese ships forbidden to land from 1639; Dutch trading mission moved to Dejima in Nagasaki in 1641, completing the implementation of the bakufu's exclusion policy (sakoku).
1617 Licensed quarter at Yoshiwara in Edo authorized.
1635 System of alternate service (sankin kōtai) institutionalized.
1637 Shimabara Rebellion.

1644.12 - 1648.2 正保 Shōhō  
1648.2 - 1652.9 慶安 Keian  
1652.9 - 1655.4 承応 Shōō
1655.4 - 1658.7 明暦 Meireki 1657 Much of Edo destroyed in a great fire.
1658.7 - 1661.4 万治 Manji  
1661.4 - 1673.9 寛文 Kanbun  
1673.9 - 1681.9 延宝 Enpō  
1681.9 - 1684.2 天和 Tenna  
1684.2 - 1688.9 貞享 Jōkyō  
1688.9 - 1704.3 元禄 Genroku

A high point in Japanese culture reached with the activities of Chikamatsu Monzaemon (puppet theater), Ihara Saikaku (fiction), and Matsuo Bashō (haikai/haiku).

1702 Vendetta of the Akō rōnin; dramatized and first performed at the Takemoto-za in Osaka in 1748.

1704.3 - 1711.4 宝永 Hōei  
1711.4 - 1716.6 正徳 Shōtoku 1716 First major reform of Tokugawa shogunate under Yoshimune.
1716.6 - 1736.4 享保 Kyōhō 1733 First violent uprisings by commoners in Edo protesting high prices.
1736.4 - 1741.2 元文 Genbun  
1741.2 - 1744.2 寛保 Kanpō  
1744.2 - 1748.7 延享 Enkyō  
1748.7 - 1751.10 寛延 Kan'en  
1751.10 - 1764.6 宝暦 Hōreki  
1764.6 - 1772.11 明和 Meiwa  
1772.11 - 1781.4 安永 An'ei  
1781.4 - 1789.1 天明 Tenmei 1787 Matsudaira Sadanobu appointed senior councilor, initiates the Kansei Reforms; forced into retirement in 1793.
1789.1 - 1801.2 寛政 Kansei  
1801.2 - 1804.2 享和 Kyōwa  
1804.2 - 1818.4 文化 Bunka 1811 Shogunate establishes an office to translate Western documents.
1818.4 - 1830.12 文政 Bunsei  
1830.12 - 1844.12 天保 Tenpō

1837 Ōshio Heihachirō leads riots in Osaka.
1841 Tenpō Reforms begun by Mizuno Tadakuni.

1844.12 - 1848.2 弘化 Kōka  
1848.2 - 1854.11 嘉永 Kaei 1853 Commodore Perry arrives at Uraga .
1854.11 - 1860.3 安政 Ansei 1858 Ii Naosuke forces approval of American treaty.
1860.3 - 1861.2 万延 Man'en 1860 Ii Naosuke assassinated.
1861.2 - 1864.2 文久 Bunkyū  
1864.2 - 1865.4 元治 Genji  
1865.4 - 1868.9 慶応 Keiō 1867 Tokugawa Yoshinobu relinquishes title as shogun.
Meiji Period
(1868 - 1912)
     
1868.9 - 1912.7 明治 Meiji

1868 Edo renamed Tokyo and designated capital; era names made to coincide with reign of emperor.
1872 Conscription and education ordinances enacted.
1873 Land taxes revised; signs prohibiting Christianity taken down.
1877 Satsuma Rebellion.
1884 Peerage created.
1885 Cabinet system established.
1889 Constitution promulgated; first national election held in 1890.
1894-95 Sino-Japanese War; annexation of Taiwan.
1904-05 Russo-Japanese War.
1910 Annexation of Korea.

Taishō Period
(1912 - 1926)
     
1912.7 - 1926.12 大正 Taishō

1914-1918 World War I.
1923 Great Kantō Earthquake.
1926 Universal male suffrage (first election in 1928).

Shōwa Period
(1926 - 1989)
     
1926.12 - 1989.1 昭和 Shōwa

1931 Manchurian Incident.
1933 Japan leaves League of Nations (effective 1935).
1941 Attack on Pearl Harbor.
1945 Atomic bombs dropped; end of World War II.
1951 Treaty of San Francisco signed
1955
Liberal Democratic Party achieves political dominance.
1964 Summer Olympics held in Tokyo; Shinkansen "bullet train" starts operation.
1972 Okinawa returned to Japan.
1973 First "oil shock" begins.
1978 Second "oil shock" begins.

Heisei Period
(1989 - )
     
1989 .1 -     平成 Heisei 1990 Japanese economic bubble bursts; beginning of the "Lost Decade."
1993 Liberal Democratic Party fails to win a majority in the House of Representatives; coalition cabinets formed beginning in 1994.