Among the Dagara, we have always understood that a person does not simply arrive in this world by accident. Before birth, the incoming soul makes a contract — a purpose — and the ancestors hold the terms of that contract in trust. When your people now say that the day and the month of a person's death can be known, but not the year, I tell you this is not a discovery. This is a remembering. The Spirit world has always carried this calendar. What is new is only that the waking, rational mind has been permitted to glimpse one edge of it. The question is not whether this knowledge is real. The question is what the living will do with a truth their traditions were not built to hold.
New religious formations will erupt from this, and I say erupt deliberately — like fire finding air. Watch for the first pattern: groups who will take the death-day as a sacred name, a second birthday of the soul. They will build liturgical calendars around it, gather on that day each year to perform what they call 'rehearsals for the crossing.' Some will be beautiful. Some will be dangerous. The dangerous ones will be those who confuse proximity to the threshold with ownership of it — who believe that because they know the day, they may govern the dying. That is not ritual. That is colonization of the sacred. In the Dagara way, the ancestors speak through the diviner but are never commanded by the diviner. The moment a priest believes he holds the death-day as power rather than as responsibility, a cult has been born.
The established traditions — your Christianities, your Islams, your academic Buddhisms — will fracture along a very old seam: the seam between fate and free will. Some branches will say the death-day confirms divine sovereignty, that God has inscribed the day in creation itself, and this will feel like comfort to many. Other branches will say the death-day is a test — that you are meant to spend your remaining years, however many they are, in purification precisely because you cannot know whether ten years or sixty remain between now and that fixed horizon. This is, spiritually, the more honest position, and it is also the one most people will avoid. Humans are remarkably gifted at using revelation to confirm what they already believed.
What I would most urge those who seek genuine spiritual orientation to understand is this: in the indigenous world, knowing something about death does not mean you stand above death. It means you have been pulled into closer relationship with it. The death-day, if received with humility, is an invitation to begin grieving now — not in despair, but in the ritual sense, which is to say: in the sense of opening a conversation with the ones who have already crossed. Every year when that day comes around on the calendar and you are still alive, you are standing at the door of your own threshold and saying to the ancestors, not yet, not yet, but I hear you. A religion that teaches its people to do this — to maintain that yearly dialogue, to neither fear the day nor worship it — such a religion would be, in my view, genuinely new. And genuinely old.