改元

• 元應三年二月二十三日（1321年3月22日）改元元亨

• 元亨四年十二月九日（1324年12月25日）改元正中

出處

• 《易經·大有》：「其德剛健而文明，應乎天而時行，是以元亨。」

出生

逝世

大事記

紀年、西曆、幹支對照表

參考

• 日本年號索引

• 同期存在的其他政權之紀年

　• 至治（1321年正月—1323年十二月）：元英宗碩德八剌、元泰定帝也孫鐵穆爾之年號

　• 泰定（1324年正月—1328年二月）：元泰定帝也孫鐵穆爾之年號

　• 大慶（1314年—1324年）：陳朝—陳明宗陳奣年號

Change of era

• 1321 : The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Gen'ō 3. The era name is derived from the I Ching; it should not be confused with the later Genkō (1331–34), which used a different character for kō (弘, "wide", instead of 亨, "go smoothly.")

Events of the Genkō era

• 1321 (Genkō 1, 2nd month): The udaijin Fujiwara-no Saionji Kinakira died.

• 1321 (Genkō 1, 4th month): The former-Emperor Go-Uda ordered the construction of a small chapel at Daikaku-ji where he lived in retirement.

• 1321 (Genkō 1, 5th month): The emperor visited Dikaku-ji to see this new chapel for himself.

• 1321 (Genkō 1, 6th month): , the shogunate strongman in Kyūshū (called the ), died.

• 1321 (Genkō 1, 12th month): Hōjō Norisada, the daimyō of Suruga Province and a close relative of the shogunate's shikken, Hōjō Takitoki, was named governor of Kyoto at Rokuhara; and Hōjō Hidetoki was named military governor of Kyūshū.

• 1322 (Genkō 2, 1st month): The emperor visited the former-Emperor Go-Uda at Daikau-ji; and he was entertained by a musical concert.

• 1322 (Genkō 2, 1st month): Saionji Sanekane died at age 74.

• 1323 (Genkō 3, 3rd month): Ichijō Uchitsune lost his position as kampaku, and Kujō Fusazane was made his successor.

• July 16, 1324 (Genkō 4, 25th day of the 6th month): Former Emperor Go-Uda's death.

The oldest extant account of Buddhism in Japan, the Genkō Shakusho (元亨釈書), was completed in Genkō 2, whence the era name in its title. The massive project was the work of Kokan Shiren.