The Festival of the Blessed Virgin Mary may, for pastoral reasons, be observed on 8 September instead of 15 August.
If it is observed on 8 September then the Collect, Post Communion and Lectionary for 15 August replace those for 8 September.
The Birth of the Blessed Virgin Mary

Green

Morning Prayer
Psalm 119.1-32
Wisdom 3.1-9 or
1 Chronicles 15.1-16.3
Mark 10.17-31

Evening Prayer
Psalms 11, 12, 13
1 Kings 3
Acts 14.8-end