Mittherbst

Also known as the Fall Equinox, Mittherbst is more commonly known by the name Less Growth. Obviously, with the weather turning colder and the leaves dropping from the trees, the citizens of the Empire feel winter impending. The time of Taal and Rhya is handed over to Ulric, who rules the dark winter months. Huge bonfires are dedicated to Rhya, the mother of the Autumn harvest, and portions of the best crops are thrown in as a sacrifice. Another portion of this harvest, along with an animal sacrifice of some kind, is quietly given to Ulric, in order to assure that his wolves stay at bay during the bitter cold of winter. It is thought that children born on Less Growth become grim and fatalistic adults, with a penchant for looking towards the glory of the past rather than the promise of the future.

Source

 * Warhammer Fantasy RPG 2nd ED -- Tome of Salvation pg. 145 146