On August 15, we celebrate Mary’s Assumption into heaven.
In no. 966 of the Catechism of the Catholic Church it says, “The Immaculate Virgin, preserved free from all stain of original sin, when the course of her earthly life was finished, was taken up body and soul into heavenly glory, and exalted by the Lord as Queen over all things, so that she might be more fully conformed to her Son, the Lord of lords and conqueror of sin and death.”