Kōka

was a  after Tenpō and before Kaei.  This period started in December of 1844 and ended in February of 1848.Nussbaum, Louis-Frédéric. (2005). "Kōka" in Japan Encyclopedia, p. 546.  During this time, the emperors were Nussbaum, "Ninkō Tennō," p. 716.  and .Nussbaum, "Kōmei Tennō," p. 553. 

Events of the Kōka era
 1844 (Kōka 1): Takashima Tomonosuke was born.National Diet Library, "Portraits of Modern Historical Figures"; retrieved wo11-12-14.

 1846 (Kōka 3): Two U.S. Navy ships were driven away from Uraga at the mouth of Tokyo Bay.Brinkley, Francis. (1893).  History of the Empire of Japan, p. 349. 

 21 February 1846 (Kōka 3, 26th day of the 1st month): Ninkō died;Meyer, Eva-Maria. (1999).  Japans Kaiserhof in der Edo-Zeit, p. 186; Imperial Household Agency (Kunaichō), 仁孝天皇 (120). Retrieved 2012-5-27. and the succession passed to his son (senso).  Soon after, Emperor Kōmei's role as monarch was confirmed by ceremonies (sokui).Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, p. 123; Varley, H. Paul. (1980). Jinnō Shōtōki, 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 Kunaichō,  Ceremony of Accession (Sokui-no-Rei). Retrieved 2012-6-30.

 March 1846 (Kōka 3): Earthquake in Sanriku (Latitude: 39.500/Longitude:  142.000), 6.9 magnitude on the Richter ScaleNOAA/Japan "Significant Earthquake Database" -- U.S. National Oceanic and Atmospheric Administration (NOAA), National Geophysical Data Center (NGDC)

  9 May 1847 (Kōka 4): Earthquake in Nagano (Latitude: 37.000/Longitude:  138.000), 7.4 on Richter Scale

 1848 (Kōka 5): The last subscription Noh performance of the pre-modern era.Rath, Eric C. (2006).  The Ethos of Noh: Actors And Their Art, p. 218.

During the Koka era, Hiroshige began making prints of women in the context of famous places.Oka, Isaburô et al. (1997).  Hiroshige: Japan's Great Landscape Artist, p. 83.

Related pages 
 Edo period

 References 

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

Kōka1st2nd3rd4th5th  1844  1845  1846  1847  1848
Preceded by:TenpōEra or nengō:KōkaSucceeded by:Kaei

Category:Japanese eras
Category:1844 establishments
Category:19th-century disestablishments in Japan
Category:1848 disestablishments
Category:1840s establishments in Japan