This year, for the first time, millions of Ukrainians will celebrate Christmas on 25 December. The Orthodox Church had used the Julian calendar and marked the nativity on 7 January – but parishes are moving to a new ecclesiastical hierarchy, dropping ties with Moscow. The invasion has accelerated the forging of a distinct Ukrainian identity: a people united by spending winter without power or running water due to the Russian strategy of firing missiles at power stations and using the cold as a weapon against the general population.