Clue from people AD 1279 Korean

Violet glow in the west, its light like lightning, Korea, 25 October 1279

Goryeosa, King Chungnyeol year 5, day gui-hai, via Yau et al. 1995 entry 291: 'A violet vapour was seen in the west. It was more than 10 chi long. Its light was similar to that of lightning.' Day name checked: gui-hai falls on 25 October 1279. A western glow likened to lightning could be an aurora or a distant storm, so this is a middling candidate.

How it connects

This clue from people supports this hunch Korea's violet glow of 25 October 1279 falls in the window for the 1279 to 1280 radiocarbon jump, and the main paper missed it

This clue from people is a clue for 1279 carbon-14 candidate

This clue from people we read it in Yau, Stephenson and Willis 1995, A catalogue of auroral observations from China, Korea and Japan, 193 BC to AD 1770, Rutherford Appleton Laboratory report RAL-TR-95-073

This clue from people came from this step Gave 1261 (and 1268, 1279) the same scrutiny as 1052