Jōgan

was a  after Ten'an and before Gangyō.  This period started in April 859 and ended in April 877.Nussbaum, Louis-Frédéric. (2005). "Jōgan" in Japan Encyclopedia, p. 429. During this time, the emperors were  and  .Titsingh, Isaac. (1834).  Annales des empereurs du japon, p. 115-121; Brown, Delmer et al. (1979). Gukanshō, p. 287; Varley, H. Paul. Jinnō Shōtōki, pp. 166-17.

Events of the Jōgan era
 859 (Jōgan 1, 1st month): New Year's festivities were suspended during national mourning for the death of Emperor Montoku.Titsingh, p. 116.

 864 (Jōgan 6, 5th month): Mount Fuji erupted during 10 days. Cinders and ash fell to earth as far away as Kai Province.Titsingh, p. 118.

 869 (Jōgan 10): Prince Sadaakira was born.  He will later become Emperor Yōzei.Titsingh, p. 122.

 9 July 869 (May 26, Jōgan 11). The 869 Sanriku earthquake and tsunami causes damage at the Sanriku coast near Sendai.

 870 (Jōgan 11): Sadaakira was named Seiwa's heir.

 876 (Jōgan 17, 11th month): In the 18th year of Seiwa's reign, the emperor abdicated.  His five-year-old son received the succession (senso).Titsingh, p. 122; Brown,  p. 287.   Soon after,Yozei was formally established as emperor on January 20, 877 (Gangyō 1, 3rd day of the 1st month). Emperor Yōzei accepted the monarch's role and duties and powers (sokui).  This was confirmed in ceremonies.Varley, p. 44; a distinct act of senso is unrecognized prior to Emperor Tenji; and all sovereigns except Jitō, Yōzei, Go-Toba, and Fushimi have senso and sokui in the same year until the reign of Emperor Go-Murakami. Compare Imperial Household Agency (Kunaichō),  Ceremony of Accession (Sokui-no-Rei); retrieved 2012-1-6.

A collection of laws issued after 811 was published during this era.  It was called the Jōgan kyaku-siki.Nussbaum, "Jōgan kyaku-siki" in Japan Encyclopedia, p. 429.

Related pages
 Heian period

 References 

 Other websites 
 National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection

Jōgan1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th15th16th17th18th19th  859  860  861  862  863  864  865  866  867  868  869  870  871  872 873  874  875  876  877 
Preceded by:Ten'anEra or nengō:JōganSucceeded by:Gangyō

Category:Japanese eras
Category:850s establishments in Japan
Category:9th-century disestablishments in Japan
Category:870s disestablishments