Two chairs
Eight festivals presented as an unbroken inheritance, and a historian's account of when they were put together.
Is the eightfold year an ancient pagan calendar handed down whole — or a modern arrangement assembled in the 1950s from genuine older parts?
The evidence is lopsided: the arrangement is recent. But the days are real, the year is real, and whether recent is a defect depends on what you think a tradition is for.