They follow the General Roman Calendar, with the addition of feasts proper to their order. These additional feasts include all canonized saints of the whole Franciscan Order, all beati of the Capuchin Reform and the more notable beati of the whole order; and every year October 5 is observed as a commemoration of the departed members of the order in the same way as November 2 is observed in the universal Church as All Souls. Owing to the great number of feasts thus observed, the Capuchins have the privilege of transferring the greater feasts, when necessary, to days marked semi-double. According to the ancient Constitutions of the Order, the Capuchins were not allowed to use vestments of rich texture, nor silk, but by Decree of the Sacred Congregation of Rites of 17 December 1888, they must conform to the general laws of the Church in this matter. They remain obliged to maintain severe simplicity in their churches, especially when non-parochial.