1990 what is the constellation of the sixth day of the ninth lunar month?

1990 September 6th of the lunar calendar is Gregorian calendar 1990 10 October 23rd/kloc-0 October 23rd-Libra _

Libra (9.24- 10.23) is a constellation symbolizing the coming of autumn, which is manifested in Librans' special sense of smell for congenial feelings. You are looking for common ground and soil for mutual understanding.