In the end of November, more or less, depending on how one tinkers with the calculators, Kemetics celebrate the Mysteries of Osiris. This multi-day festival is, in effect, the funeral rituals for Wesir, and thus serve as the template for all funerals, as all of the dead become Osiris on their route to the West. That is, however, not all it is.
Source: Hills of the Horizon: Green Man Mysteries – Agora