18 1 What is the constellation _ 18?

What constellation is Zhuge Liang in the Three Kingdoms?

The history is July 23rd, which should be the lunar calendar. In ancient times, there was no solar calendar. The perpetual calendar can't be found that far (AD 18 1). According to the law that the lunar calendar basically repeats every 19, plus 1900, it is 208 1, which was 1 on the 23rd day of the seventh lunar month, so Zhuge Liang is a Virgo.