When Is Durin'S Day 2024 Calendar. The new year of their calendar was the last cycle of the moon to begin in autumn, or in thorin's words the first. Lore when the last moon of autumn and the first sun of winter appear in the sky together (i.e.

This is based in the assumption that the orbital period of the moon, as described in the lord of the rings ,. Each lunar cycle takes about 29.5 days.