Our Lady of the Holy Rosary

Hahnville, LA

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For as lightning cometh out of the east and appeareth even into the west: so shall also the coming of the Son of man be (Mt 24:27).
Pope Francis celebrating Mass ad orientem in the Sistine Chapel
Is it contrary to liturgical law to celebrate the postconciliar Mass ad orientem?

It is not. For a good treatment of this question, see the Adoremus article from September 12, 2022.

For a more theological and historical perspective, read Pope Benedict's chapter "The Altar and the Direction of Liturgical Prayer" from The Spirit of the Liturgy, which is also available in the Adoremus publication.