My Ordo is not very clear, nor is the breviary. Tomorrow is a memorial but the psalter tomorrow comes from Common of BVM what about Matins? Its a memorial so ordinarily it would come from the feria, but the fact that the other major hours come from the common makes me doubt. I haven't been able to find a clear answer.
Tomorrow the texts come from the common of BMV, except for the invitatorium, the hymns, readings and responsories of the officium lectionis, as well as the hymns, antiphons, readings, responsories and orations of the major hours; these are proper to the memorial. At Lauds, the psalms come from the Sunday of week I, at Vespers the psalms come from the commons. At the minor hours it seems that you take the antiphons, readings and versicles from the commons; the psalms come from the day.
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