Beata Maria in Resurrectione Domini

In how many places will the Mass of Beata Maria in Resurrectione Domini be celebrated tomorrow? The proper texts of the Mass are found in the Collectio Missarum de Beata Maria Virgine or in the English translation of it, entitled Collection of Masses of the Blessed Virgin Mary.
Here is the oration I composed to conclude the General Intercessions, and my own translation of the splendid Preface of this Mass. The painting of the Risen Jesus appearing to His Blessed Mother is by Giovanni Francesco Guercino (1599-1666).
Collect at the General Intercessions
Almighty and ever-living God,
who, during the great and silent sabbath
when your Son slept in the tomb,
looked upon the flame of faith and hope
that burned, for the sake of the whole Church,
in the Immaculate Heart of the Virgin Mary,
grant us, we beseech you,
so to follow her in faith and in hope in this life
as to share her joy eternally in heaven.
Through Christ our Lord.

Preface
Truly it is right and just, our duty and our salvation,
always and everywhere to give you thanks,
Lord, holy Father, almighty and eternal God.
At the resurrection of your Christ
you filled the blessed Virgin with joy beyond all telling
and wonderfully extolled her faith.
In the strength of that faith
she waited for that Day of Light and of Life
when the night of death would be ended,
the whole world would exult,
and the Church at her dawn would tremble with joy
in seeing again her deathless Lord.
Through him the choirs of Angels adore your majesty,
as in eternity they rejoice before your face.
Let our voices, we pray you, be joined to theirs,
in this their joyful hymn: