Feast Days of Mary

January 1
Solemnity of Mary, Mother of God*

January 8
Our Lady of Prompt Succor

February 2
Presentation of the Lord

February 11
Our Lady of Lourdes

March 25
Annunciation

May 13
Our Lady of Fatima

May 31
Visitation

June 27
Our Mother of Perpetual Help

July 16
Our Lady of Mount Carmel

August 15
Assumption*

August 22
Queenship of Mary

September 8
Birth of Mary

September 12
The Most Holy Name of Mary

September 15
Our Lady of Sorrows

October 7
Our Lady of the Rosary

November 21
Presentation of the Blessed Virgin Mary

December 8
Immaculate Conception *

December 12
Our Lady of Guadalupe
 

* Holy day of Obligation

The Month of Mary is May.

The Month of the Rosary is October.

The Feast of the Immaculate Heart is the Saturday following the Second Sunday after Pentecost.

The First Saturday of each Month is also dedicated to Marian Devotions

Source: https://www.marian.org/mary/feastdays.php