Calan Gaeaf is observed on November 01, 2025. Calan Gaeaf is the name of the first day of winter in Wales, observed on 1 November. The night before is Nos Galan Gaeaf, an Ysbrydnos when spirits are abroad. People avoid churchyards, stiles, and crossroads, since spirits are thought to gather there. (With material from: Wikipedia)
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