Rituals for the recently deceased are carried out (usually) from the second day of the seventh lunar month in some Bai villages. These rituals are often only carried out every couple of years, so locations and exact time vary.
The lunar seventh month is known as the Ghost Month, where the spirits come to visit the living.
At the beginning of the lunar seventh month, the gates of the underworld open and the spirits come to visit the living, on the full moon day the spirits return to the underworld.
See related festivals.
Festival held according to lunar calendar on 农历7月初2.