The Ukrainian Greek Catholic Church celebrates his feast day on the first Sunday after the Julian Calendar (Gregorian Calendar November 25). When, in 1867, Pius IX inserted his feast into the General Roman Calendar, it was assigned to November 14, which was the first free day after November 12, which was then occupied by the feast of "Saint Martin I, Pope and Martyr." In the General Roman Calendar of 1969, this latter feast was moved to Pope Saint Martin's "dies natalis" (birthday to heaven), and Saint Josaphat's feast was moved to that date, his own "dies natalis". Some Traditionalist Catholics continue to observe the General Roman Calendar of 1954, the General Roman Calendar of Pope Pius XII, or the General Roman Calendar of 1960, in which the feast day is on November 12.