Chestnut Party and astronomy

The Catalan Chestnut Party and the Christian All Saints’ Day, the Halloween of the Anglo-Saxons, the Sanheim of the Celts, and the Roman Pomona festival are the same celebration with different appearance. The diversity of autumn products we consume during these days, with very diverse geographical origins, is further evidence of the syncretism of traditions. And behind, as often, is the seasonal cycle. All Saints falls halfway between the autumn equinox and the winter solstice, just when the cold comes.