For some Ukrainians, celebrating Epiphany is incomplete without taking a plunge into the icy waters of their nearest lake or river. Epiphany, the Christian feast day commemorating the Magi’s visit, Jesus’ baptism, and the wedding at Cana, was traditionally celebrated by Ukraine’s Orthodox Christians on Jan. 19 in accordance with the Julian calendar. However, the independent Orthodox Church of Ukraine’s (OCU) switch to a revised Julian calendar on Sept. 1, prompted by Russia’s full-scale invasion of Ukraine, means that Ukraine now celebrates Epiphany on Jan. 6. The switch also moved Ukraine’s o…