 There were also occasions on which several conventual Masses are said on the same day.On ferias of Lent, on Ember days, Rogation days and Vigils when a double or semi-double occurs, or during an octave or when a Votive office was said, the Mass corresponding to the office is said after Terce, that of the feria after None.On Ascension eve, if a double or semi-double occurs, the Mass of the feast was said after Terce, that of the Vigil after Sext, that of Rogation after None.