The constellation looks at the Gregorian calendar. Since the "eighth day" is mentioned, the eighth day of April in the lunar calendar 1994 is the Gregorian calendar1May 994 18, which is Taurus (4.20-5.20); I'm 20 years old now.
If it is Gregorian calendar1April 8, 994, then it is Aries (3.2 1-4.20) and has reached the age of 20.