The apostolate of Our Lady of Sunday exists to make our Blessed Mother's visions and message to Auguste Arnaud better known. A pilgrim statue of Our Lady of Sunday has recently been restored and now travells throughout Great Britain.

"How could she who is Mother of the Lord and Mother of the Church fail to be uniquely present on the day which is both the day of the Lord and the day of the Church? ... From Sunday to Sunday, the pilgrim people follow in the footsteps of Mary, and her maternal intercession gives special power and fervour to the prayer which rises from the Church to the Most Holy Trinity."

(John Paul II, Apsotolic Letter Dies Domini, para. 86)