Saint Eustace's feast day in the Roman Catholic Church, as is also in the Eastern Orthodox Church, is September 20, as indicated in the Roman Martyrology. The celebration of Saint Eustace and his companions was included in the Roman Calendar from the twelfth century until 1969, when it was removed because of the completely fabulous character of the saint's "Acta", resulting in a lack of sure knowledge about them. However, his feast is still observed by Roman Catholics who follow the pre-1970 Roman Calendar.