The main meal, known as Sviata Vecheria or Holy Supper, takes place on Christmas Eve, and traditionally includes 12 meatless dishes, symbolising the 12 apostles.

https://www.independent.ie/irish-news/lucy-cafe-owner-viktoriia-horbonos-speaks-about-the-festive-traditions-passed-down-from-her-ukranian-grandmother/a1050420874.html