Korean records for 1052 to 1053
Pulled the Yau, Stephenson and Willis 1995 catalogue (94 pages, East Asian auroras 193 BC to AD 1770) and read the 1050s. Korea logged a turtle-shaped white vapour with a blue-violet vapour inside on 18 July 1052. Nothing for the winter of 1052 to 1053. The newer Wang 2021 Korean catalogue with 2,013 records is paywalled and still to check.
How it connects
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The 1052 white vapour matches the 1052 radiocarbon candidate
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White vapour shaped like a turtle, with a blue-violet vapour inside it, Korea, 18 July 1052
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Japanese records for 1052 to 1053
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