Is the anniversary of the death of an elder according to the lunar calendar or the solar calendar?

The anniversary of the death of elders follows the lunar calendar, because the folk customs of China people follow the lunar calendar, especially on major festivals such as the Lunar New Year. There are no taboos, and there will be no consequences if you accidentally violate them. At present, people near Hebei are not only clear-cut, but also the anniversary is mainly the "third anniversary" of being a high priest, which can be ignored. You don't have to take your work seriously, but the sacrifice is mainly the ideological concern of future generations and the influence of the surrounding environment.