1972 lunar calendar, the fifteenth day of the lunar calendar, what?

The constellation is determined by the date of the Gregorian calendar. The Gregorian calendar date of the 15th day of the first lunar month in 72 is1Tuesday, February 29th, 972. The constellation of that day was Pisces.

Lunar calendar: the fifteenth day of the first month in the year of Renzi.

Gregorian calendar: Tuesday, February 29th, 1972 Pisces.