The Festival of the Blessed Virgin Mary may be celebrated on Monday 15 August, or, for pastoral reasons, on 8 September.
If the Blessed Virgin Mary is celebrated on Monday 15 August:
The Blessed Virgin Mary

https://almanac.oremus.org/2022-08-15

White

Principal Service
Isaiah 61.10,11 or
Revelation 11.19 - 12.6,10
Psalm 45.10-17
Galatians 4.4-7
Luke 1.46-55

Third Service
Isaiah 7.10-15
Luke 11.27,28
Morning Psalms
Psalms 98, 138, 147.1-12

Second Service
Song of Solomon 2.1-7
Acts 1.6-14
Evening Psalm
Psalm 132

Collect

Almighty God,
who looked upon the lowliness of the Blessed Virgin Mary
and chose her to be the mother of your only Son:
grant that we who are redeemed by his blood
may share with her in the glory of your eternal kingdom;
through Jesus Christ your Son our Lord,
who is alive and reigns with you,
in the unity of the Holy Spirit,
one God, now and for ever.

Post Communion

God most high,
whose handmaid bore the Word made flesh:
we thank you that in this sacrament of our redemption
you visit us with your Holy Spirit
and overshadow us by your power;
strengthen us to walk with Mary the joyful path of obedience
and so to bring forth the fruits of holiness;
through Jesus Christ our Lord.