Feasts are not consecrated to angels or Saints, though a solemn commemoration, as in the English liturgy, is allowed
Feast days may not be consecrated to angels or the blessed, because feasts belong to God's solemn worship.
A set day may still solemnly remember certain Saints, thank God for benefits given to them and through them, and propose their virtues for imitation.
Such days are consecrated to God alone, even while they honor holy men.
The English liturgy, which remembers apostles and other holy men, is the example.
Latin
XXVI. Eodem modo negant licitum esse dies festos Angelis, & hominibus Beatis consecrare, cum festa ad cultum Dei solemnem pertineant, quamvis nihil obstare putent quin certis diebus Sanctorum quorundam fiat peculiaris & solemnis commemoratio, & gratiae Deo agantur pro beneficiis in ipsos, & per ipsos collatis, eorumque virtutes ac egregia facta populo Christiano imitanda proponantur. Nam ejusmodi festa Deo soli consecrata sunt, quanquam in magnum Sanctorum virorum honorem cedant, ut in Ecclesia Anglicana obtinet, in cujus Liturgia memorantur Apostolorum, & quorundam aliorum virorum Sanctorum festa.