A great earthquake toppled many houses across the realm; the Bureau of Yin-Yang divined war in the east and west. (Fusō Ryakuki L717)
Following a report from Izu Province, four official orders to arrest "Taira no Masatake" were issued to the four provinces of Suruga, Izu, Kai and Sagami (that Taira no Masatake is Taira no Masakado is a judgment). (Honchō Seiki 卷002 天慶元年十一月三日丙午)
Fan Yanguang, besieged for more than a year in Guangjin (Weizhou), leads his army out in mourning clothes to receive the edict and surrender. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷281 제81단(머리글 이후 비공백 줄 기준))
A Eastern Capital is set up at Bianzhou, restored as Kaifeng Prefecture, and Luoyang becomes the Western Capital. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷281 제88단(머리글 이후 비공백 줄 기준))
Ngo Quyen drives iron stakes at the mouth of the Bạch Đằng River and defeats the Southern Han fleet badly at low tide; Liu Hongcao is killed in battle. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷281 제92단(머리글 이후 비공백 줄 기준))
Japan (11)
With earthquakes not ceasing, temples and shrines were ordered to chant the Ninno-kyo 10,000 times. (Honchō Seiki 卷002 天慶元年七月三日)
Great earthquake on the night of the 15th of the 4th month; the damage was severe and flooding followed (small note). (Honchō Seiki 卷002 天慶元年七月十三日 小注)
At night, the second quarter of the Inu hour, the Naishidokoro left the Unmeiden and moved to the Korodono, including the transfer of the sacred object (the sacred casket). (Honchō Seiki 卷002 天慶元年七月十三日戊午)
The Dazaifu forwarded to the court two sheep presented by Tang merchants. (Honchō Seiki 卷002 天慶元年七月廿一日)
Two earthquakes on the night of the 6th of the 8th month; buildings such as the Kamadono collapsed and palace walls in the capital crumbled in places. (Honchō Seiki 卷002 天慶元年八月六日庚辰)
Thousands of clergy and laity of Iwashimizu's main shrine destroyed the new shrine at Yamashina and moved the nun's Hachiman image to the main shrine — a dispute between the two shrines. (Honchō Seiki 卷002 天慶元年八月十二日丙戌)
The emperor moved from the Jonei-den to the Ryoki-den (second quarter of the Inu hour). (Honchō Seiki 卷002 天慶元年八月廿七日)
On the main and side roads of the eastern and western capitals, wooden deity images were carved and set up facing each other, called Funado-no-kami and Goryo. (Honchō Seiki 卷002 天慶元年九月二日丙午)
Saio Princess Yoshiko set out for the Ise Grand Shrine, leaving the Nonomiya after the purification at the Kadono River. (Honchō Seiki 卷002 天慶元年九月十五日己未)
Ono no Yoshifuru was sent as offering envoy to Usa Shrine; the imperial proclamation says great offerings were made in prayer for peace after the great earthquake of the 4th month. (Honchō Seiki 卷002 天慶元年十月九日壬午)