What was the constellation the day before yesterday?

I was born the day before the Mid-Autumn Festival on 1999. What constellation is it? Please help me calculate.

Constellation: Born on September 23rd,1999; Virgo before 19: 31; Libra after that.

Because you were born at the junction of two constellations. You may have the common characteristics of these two constellations. )

Gregorian calendar:1September 23rd, 999 (Thursday)

Lunar calendar: August of the Year of the Rabbit 14.