The Church has celebrated Mary’s birth since at least the sixth century. A September birth was chosen because the Eastern Church begins its Church year with September. The September 8 date helped determine the date for the feast of the Immaculate Conception on December 8.

What is consecration? 
Consecration is a response to God’s call. Baptism is our first consecration. Through baptism we no longer belong to ourselves, but to Christ who imparts His life to us. Marian consecration is the act of entrusting one’s body, soul, possessions, works and entire life to the protection, guidance, and intercession of Our Lady.
Why a consecration to Mary? 
Through collective devotion and handing over to Mary, an act of consecration is meant to be a reminder to the faithful of the Blessed Mother’s witness to the Gospel and to ask for her effective intercession before her son on behalf of those in need. 
When you renew your Marian Consecration, you pray for Our Lady’s continued protection and  entrustments.  This year, we seek the assistance of Our Lady even more earnestly as we face     together the effects of the global pandemic.
Bishops of the United States have entrusted our nation to the care of the Blessed Mother on multiple occasions beginning in 1792. Several popes have consecrated the world to Mary on various occasions.