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People attend the Christmas service in the Cathedral of Christ the Saviour in Moscow, Russia, on Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar. (Xinhua/Evgeny Sinitsyn)
People attend the Christmas service in the Cathedral of Christ the Saviour in Moscow, Russia, on Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar. (Xinhua/Evgeny Sinitsyn)