What are the different celebrations and date of Mary?

Mary, the mother of Jesus, is celebrated in various ways across different Christian traditions. The most notable celebrations include the Feast of the Immaculate Conception on December 8, commemorating her conception without original sin; the Feast of the Annunciation on March 25, marking the announcement of her pregnancy by the Angel Gabriel; and the Feast of the Assumption on August 15, celebrating her assumption into heaven. Additionally, many cultures have specific local feasts and Marian devotions throughout the year.