Liturgical Year

Explanation of Rogation Days

Earthquakes and other calamities afflicted the diocese of Vienne in Dauphiny (France) in the fifth century, and Saint Mamertus, who was Bishop of that Diocese, instituted a penitentiary procession with public applications on the Monday, Tuesday, and Wednesday before Ascension Day.  In 816, Pope Leo III introduced it into Rome, and soon after it became…

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