Jiankang (464) — the same event in History of the Southern Dynasties, Book of Song and Zizhi Tongjian

History of the Southern Dynasties: Emperor Xiaowu died at the Yuzhu Hall at age 35.; Book of Song: Emperor Xiaowu died in the Yuzhu Hall at age…

What each source says

History of the Southern Dynasties (Nanshi), Annals · AD 464 · 建康

Emperor Xiaowu died at the Yuzhu Hall at age 35.

庚申,帝崩於玉燭殿,時年三十五
Location: 南史 卷2 大明8年

Book of Song (Songshu), Annals · AD 464 · 建康

Emperor Xiaowu died in the Yuzhu Hall at age thirty-five.

庚申,帝崩於玉燭殿,時年三十五。
Location: 宋書 卷6 大明8年 5月

Book of Song (Songshu), Annals · AD 464 · 建康

On the day of Emperor Xiaowu's death, the crown prince Liu Ziye, the Former Deposed Emperor, ascended the throne in an intercalary month.

八年閏五月庚申,世祖崩,其日,太子即皇帝位。
Location: 宋書 卷7 大明8年 5月

Zizhi Tongjian (Comprehensive Mirror) · AD 464 · 建康

Emperor Xiaowu of Song dies; the crown prince ascends at sixteen (Emperor Qianfei).

庚申,上殂於玉燭殿
Location: 卷129

Place: 石頭城(建康)

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