《元史·本纪·卷十八》
初五，太阴星干犯亢宿天区。
丁丑，太阴犯亢。
On the 5th, the moon passed through the亢宿 celestial region.
<s>[INST] Given the Classical Chinese text: 丁丑，太阴犯亢。, provide a step-by-step translation process to arrive at the English translation. [/INST] 
Step 1: 丁丑 is a Chinese calendar date, referring to the 5th day of the 10th month in the lunar calendar. Step 2: 太阴 is the moon. Step 3: 犯 means to pass through. Step 4: 亢 is the name of a Chinese constellation. Final English translation: On the 5th, the moon passed through the亢宿 celestial region.</s>
Given the Classical Chinese text: 丁丑，太阴犯亢。, provide a step-by-step translation process to arrive at the English translation.
user
Step 1: 丁丑 is a Chinese calendar date, referring to the 5th day of the 10th month in the lunar calendar. Step 2: 太阴 is the moon. Step 3: 犯 means to pass through. Step 4: 亢 is the name of a Chinese constellation. Final English translation: On the 5th, the moon passed through the亢宿 celestial region.
assistant