Analysis of information sources in references of the Wikipedia article "Святий Вечір" in Ukrainian language version.
The Armenian Apostolic Church follows the oldest Jerusalem version of Canons of Calendar, based on the Julian Calendar, and therefore celebrates Christmas and Theophany on the same day, January 6
the Armenians in Jerusalem – and only in Jerusalem – celebrate Christmas on January 19...
the Armenians in Jerusalem – and only in Jerusalem – celebrate Christmas on January 19...