Clue from people AD 1277 Chinese

The night sky was red, China, 11 September 1277

Xu Wenxian Tongkao, a later encyclopedia, via Yau et al. 1995 entry 289: 'At night, the sky was red in colour.' Not in the Song or Yuan official histories, which is why the earlier check of those histories missed it.

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 two years before

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