ASCENSION DAY, working on
1880 Daily News 7 May 6 [Bangor, Caernarvon.] Ascension Day is always rigorously observed by the men employed at the Bethesda Slate Quarries … consequent upon an old superstition … that working on that day will be attended with an accident … Yesterday the old custom was observed, and the quarries were at a standstill.

1883 BURNE Shropshire 218. Rooks are accounted pious as well as wise. At Coreley, in the Clee Hills, it is believed that they never ‘carry’ (sticks to their nests, understood) ...