WAntei (安貞) was a Japanese era name after Gennin and before Kangi. This period spanned the years from December 1227 to March 1229. The reigning emperor was Go-Horikawa-tennō (後堀河天皇).
WBunji (文治) was a Japanese era name after Genryaku and before Kenkyū. This period spanned the years from August 1185 through April 1190. The reigning emperor was Go-Toba-tennō (後鳥羽天皇).
WBunki (文亀) was a Japanese era name after Meiō and before Eishō. This period spanned the years from February 1501 through February 1504. The reigning emperor was Go-Kashiwabara-tennō (後柏原天皇).
WBunryaku (天暦), also romanized as Bunreki, was a Japanese era name after Tenpuku and before Katei. This period spanned the years from November 1234 to September 1235. The reigning emperor was Shijō-tennō (四条天皇).
WBunshō (文正) was a Japanese era name after Kanshō and before Ōnin. The period spanned the years February 1466 through March 1467. The reigning emperor during this period was Go-Tsuchimikado-tennō (後土御門天皇).
WChōji (長治) was a Japanese era name after Kōwa and before Kajō. This period spanned the years from February 1104 through April 1106. The reigning emperor was Emperor Horikawa-tennō (嘉保天皇).
WChōkyō (長享) was a Japanese era name after Bunmei and before Entoku. This period spanned the years from July 1487 through August 1489. The reigning emperor was Go-Tsuchimikado-tennō (後土御門天皇).
WChōryaku (長暦) was a Japanese era after Chōgen and before Chōkyū. This period spanned the years from April 1037 through 1040. The reigning emperor was Go-Suzaku-tennō (後朱雀天皇).
WChōtoku (長徳) was a Japanese era name after Eiso and before Chōhō. This period spanned the years from February 995 through January 999. The reigning emperor was Ichijō-tennō (一条天皇).
WEinin (永仁) was a Japanese era name after Shōō and before Shōan. This period spanned the years from August 1293 through April 1299. The reigning emperors were Fushimi-tennō (伏見天皇) and Go-Fushimi-tennō (後伏見天皇).
WEngen (延元) was a Japanese era of the Southern Court during the Era of Northern and Southern Courts after Kenmu and before Kōkoku, lasting from February 1336 to April 1340. Reigning Emperors were Emperor Go-Daigo and Emperor Go-Murakami in the south and Emperor Kōmyō in the north.
WEnkyō (延享) was a Japanese era name after Kanpō and before Kan'en. This period spanned the years from February 1744 through July 1748. The reigning emperors were Sakuramachi-tennō (桜町天皇) and Momozono-tennō (桃園天皇).
WEn'ō (延応) was a Japanese era name after Ryakunin and before Ninji. This period spanned the years from February 1239 to July 1240. The reigning emperor was Shijō-tennō (四条天皇).
WEntoku (延徳) was a Japanese era name after Chōkyō and before Meio. This period spanned the years from August 1489 through July 1492. The reigning emperor was Go-Tsuchimikado-tennō (後土御門天皇).
WGenchū (元中) was a Japanese era of the Southern Court during the Era of Northern and Southern Courts lasting from April 1384 to October 1392. Reigning Emperors were Go-Kameyama in the south and Go-Komatsu in the north.
WGennin (元仁) was a Japanese era name after Jōō and before Karoku. This period spanned the years from November 1224 to April 1225. The reigning emperor was Go-Horikawa-tennō (後堀河天皇).
WGenkō (元弘) was a Japanese era name of the Southern Court during the Era of Northern and Southern Courts after Gentoku and before Kenmu. This period spanned the years from August 1331 through January 1334. Reigning Emperors were Emperor Go-Daigo-Tennō (後醍醐天皇) in the south and Emperor Kōgon-Tennō (光厳天皇) in the north.
WGenryaku (元暦) was a Japanese era name after Juei and before Bunji. This period spanned the years from April 1184 through August 1185. The reigning emperors were Antoku-tennō (安徳天皇) and Go-Toba-tennō (後鳥羽天皇).
WGentoku (元徳) was a Japanese era name after Karyaku and before Genkō. This period spanned the years from August 1329 through April 1331 in the Southern Court, but continued to be used in the Northern Court until 1332. The reigning Emperor was Go-Daigo-tennō (後醍醐天皇).
WHōji (宝治) was a Japanese era name after Kangen and before Kenchō. This period spanned the years from February 1247 to March 1249. The reigning emperor was Go-Fukakusa-tennō (後深草天皇,).
WJian (治安) was a Japanese era name , also known as Chi'an, after Kannin and before Manju. This period spanned the years from February 1021 through July 1024. The reigning emperor was Go-Ichijō-tennō (後一条天皇).
WJōei (貞永) was a Japanese era name after Kangi and before Tenpuku. This period spanned the years from April 1232 to April 1233. The reigning emperors were Go-Horikawa-tennō (後堀河天皇) and Shijō-tennō (四条天皇).
WJōtoku (承徳) was a Japanese era name after Eichō and before Kōwa. This period spanned the years from November 1097 through August 1099. The reigning emperor was Emperor Horikawa-tennō (堀河天皇).
WKagen (嘉元) was a Japanese era name after Kengen and before Tokuji. This period spanned the years from August 1303 through December 1306. The reigning emperor was Go-Nijō-tennō (後二条天皇).
WKannin (寛仁) was a Japanese era name after Chōwa and before Jian. This period spanned the years from April 1017 through February 1021. The reigning emperor was Go-Ichijō-tennō (後一条天皇).
WKanpō (寛保) was a Japanese era name , also known as Kampō, after Genbun and before Enkyō. This period spanned the years from February 1741 through February 1744. The reigning emperor was Sakuramachi-tennō (桜町天皇).
WKaroku (嘉禄) was a Japanese era name after Gennin and before Antei. This period spanned the years from April 1225 to December 1227. The reigning emperor was Go-Horikawa-tennō (後堀河天皇).
WKaryaku (嘉暦), also romanized as Kareki, was a Japanese era name after Shōchū and before Gentoku. This period spanned the years from April 1326 through August 1329. The reigning Emperor was Go-Daigo-tennō (後醍醐天皇).
WKatei (嘉禎) was a Japanese era name after Bunryaku and before Ryakunin. This period spanned the years from September 1235 to November 1238. The reigning emperor was Shijō-tennō (四条天皇).
WKenchō (建長) was a Japanese era name after Hōji and before Kōgen. This period spanned the years from March 1249 to October 1256. The reigning emperor was Go-Fukakusa-tennō (後深草天皇).
WKengen (乾元) was a Japanese era name after Shōan and before Kagen. This period spanned the years from November 1302 through August 1303. The reigning emperor was Go-Nijō-tennō (後二条天皇).
WKenji (建治) is a Japanese era name which followed Bun'ei and preceded Kōan. This period spanned the years from April 1275 to February 1278. The reigning emperor was Go-Uda-tennō (後宇多天皇).
WKōan (弘安) was a Japanese era name after Kenji and before Shōō. This period spanned the years from February 1278 through April 1288. The reigning emperors were Go-Uda-tennō (後宇多天皇) and Fushimi-tennō (伏見天皇).
WKōchō (弘長) was a Japanese era name after Bun'ō and before Bun'ei. This period spanned the years from February 1261 to February 1264. The reigning emperor was Kameyama-tennō (亀山天皇).
WKōgen (康元) was a Japanese era name after Kenchō and before Shōka. This period spanned the years from October 1256 to March 1257. The reigning emperor was Go-Fukakusa-tennō (後深草天皇).
WKōhei (康平) was a Japanese era after Tengi and before Jiryaku. This period spanned the years from August 1058 through August 1065. The reigning emperor was Go-Reizei-tennō (後冷泉天皇).
WKōka (弘化) was a Japanese era name after Tenpō and before Kaei. This period spanned the years from December 1844 through February 1848. The reigning emperors were Ninkō-tennō (仁孝天皇) and Kōmei-tennō (孝明天皇).
WKōshō (康正) was a Japanese era name after Kyōtoku and before Chōroku. This period spanned the years from July 1455 through September 1457. The reigning emperor was Go-Hanazono-tennō (後花園天皇).
WKyōtoku (享徳) was a Japanese era name (後花園天皇) after Hōtoku and before Kōshō. This period spanned the years from July 1452 through July 1455. The reigning emperor was Go-Hanazono-Tennō (後花園天皇).
WKyōwa (享和) was a Japanese era name after Kansei and before Bunka. This period spanned the years from February 1801 through February 1804. The reigning emperor was Kōkaku-tennō (光格天皇).
WMan'en (万延) was a Japanese era name after Ansei and before Bunkyū. This period spanned the years from March 1860 through February 1861. The reigning emperor was Kōmei-tennō (孝明天皇).
WŌchō (応長) was a Japanese era name after Enkyō and before Shōwa. This period spanned 11 months from April 1311 through February 1312. The reigning emperor was Hanazono-tennō (花園天皇).
WŌhō (応保) was a Japanese era name after Eiryaku and before Chōkan. This period spanned the years from September 1161 through March 1163. The reigning emperor was Nijō-tennō (二条天皇).
WRyakunin (暦仁) was a Japanese era name after Katei and before En'ō. This period spanned the years from November 1238 to April 1239. The reigning emperor was Shijō-tennō (四条天皇).
WRyakuō (暦応) was a Japanese era of the Northern Court during the Era of Northern and Southern Courts, lasting from August 1338 to April 1342. The emperor in Kyoto was Emperor Kōmyō . Go-Kōgon's Southern Court rival in Yoshino during this time-frame was Emperor Go-Murakami .
WShōan (正安) is an era in Japanese history. This era spanned the years from April 1299 through November 1302. Preceding it was the Einin era, and following it was the Kengen era. The reigning emperors were Go-Fushimi-tennō (後伏見天皇) and Go-Nijō-tennō (後二条天皇).
WShōgen (承元) was a Japanese era name after Shōka and before Bun'ō. This period spanned the years from March 1259 through April 1260. The reigning emperors were Go-Fukakusa-tennō (後深草天皇) and Kameyama-tennō (亀山天皇).
WShōka (正嘉) was a Japanese era name after Kōgen and before Shōgen. This period spanned the years from March 1257 to March 1259. The reigning emperor was Go-Fukakusa-tennō (後深草天皇).
WShōkyō was a brief initial Japanese era of the Northern Court during the Kamakura period, after Gentoku and before Kenmu, lasting from April 1332 to April 1333. Reigning Emperors were Emperor Go-Daigo in the south and Emperor Kōgon in the north.
WShōō (正応) was a Japanese era name after Kōan and before Einin. This period spanned the years from April 1288 through August 1293. The reigning emperor was Fushimi-tennō (伏見天皇).
WShōtoku (正徳) was a Japanese era name after Hōei and before Kyōhō. This period spanned the years from April 1711 through June 1716. The reigning emperor was Nakamikado-tennō (中御門天皇).
WShōwa (正和) or Medieval Showa was a Japanese era name after Ōchō and before Bunpō. This period spanned the years from March 1312 through February 1317. The reigning emperor was Hanazono-tennō (花園天皇).
WTenpuku (天福), also romanized as Tempuku, was a Japanese era name after Jōei and before Bunryaku. This period spanned the years from April 1233 to November 1234. The reigning emperor was Shijō-tennō (四条天皇).
WTokuji (徳治) was a Japanese era name after Kagen and before Enkyō. This period spanned the years from December 1306 through October 1308. The reigning emperor was Go-Nijō-tennō (後二条天皇).
WYōwa (養和) was a Japanese era name after Jishō and before Juei. This period spanned the years from July 1181 through May 1182. The reigning emperor was Antoku-tennō (安徳天皇).