《旧唐书·本纪·卷十五》
冬，十月初一为甲辰日。
冬十月甲辰朔。
In the winter, the first day of the tenth month was Jiachen Day.
<s>[INST] Rewrite the following English passage in the style of Classical Chinese: In the winter, the first day of the tenth month was Jiachen Day. [/INST] 冬十月甲辰朔。</s>
Rewrite the following English passage in the style of Classical Chinese: In the winter, the first day of the tenth month was Jiachen Day.
user
冬十月甲辰朔。
assistant