10th-century neologisms

was a after Tenryaku and before Ōwa. This period spanned the years from October 957 through February 961. The reigning emperors was .

was a after Tengyō and before Tentoku. This period spanned the years from April 947 through October 957. The reigning emperor was .

Japanese era from 968 to 970

Japanese era from 901 to 923

Japanese era from 978 to 983

was a after Ōwa and before Anna. This period spanned the years from July 964 through August 968. The reigning emperors were and .

was a after Eiso and before Chōtoku. This period spanned the years from November 990 through February 995. The reigning emperor was .

was a after Anna and before ''Ten'en.'' This period spanned the years from March 970 through March 973. The reigning emperors were and .

was a after Jōhei and before Tenryaku. This period spanned the years from May 938 through April 947. The reigning emperors were and .

Japanese era spanning from August 988 through November 990

was a after Kanna and before Eiso. This period spanned the years from April 987 through August 988. The reigning emperor was .

Japanese era spanning from January 999 through July 1004

was a after Tentoku and before Kōhō. This period spanned the years from February 961 through July 964. The reigning emperor was .

was a after Engi and before Jōhei. This period spanned the years from April 923 through April 931. The reigning emperors were and .

was a after Tenroku and before Jōgen. This period spanned the years from December 973 through July 976. The reigning emperor was .

Japanese era from 976 to 978

Japanese era name

, also romanized as Shōhei, was a after Enchō and before Tengyō. This period spanned the years from April 931 through May 938. The reigning emperor was .

was a after Tengen and before Kanna. This period spanned the years from April 983 through April 985. The reigning emperors were and .