…巳年384天…初秋奇熱奈…閏魁六月中…古今時歲典……

閏字が理解できました！ 

…巳年384日…初秋の異常な暑さ…閏魁の6月半ば…古今の歳の法則……

I understood the leap year!

... 384 days in the year of Si... Qi Ren Na in early autumn... Run Kui in mid June... Classic of ancient and modern times......