The Assumption of the Blessed Virgin Mary
On this day, a Holy Day of Obligation, we recall Our Lady's being assumed into Heaven and crowned Queen. Note that Mary was assumed into Heaven -- taken up by the power of God, like Elias and Enoch -- while Christ ascended into Heaven under His own power.
The Assumption of the Blessed Virgin Mary into Heaven is a defined dogma of the Catholic Church. The Feast of the Assumption commemorates the death of Mary and her bodily assumption into Heaven - a foretaste of our own bodily resurrection at the end of tie. Because it signifies the Blessed Virgin's passing into eternal life, it is the most important of all Marian feasts and a holy day of obligation.
(August 15, 2015 falls on a Saturday and is not a holy day of olgligation)