Traditional:
May 1: The Beginning of Mary’s month
May 13 : Our Lady of Fatima
May 24: Our Lady Help of Christians
May 31: Mary, Queen of Heaven
For an exhaustive list of Traditional Marian feasts go to: http://www.catholictradition.org/Mary/marian-feasts.htm#JUNE
Novus Ordo;
May 1: Mary, Queen of Heaven
May 13: Our Lady of Fatima
May 24: Our Lady Help of Christians:
May 31: The Visitation of the Blessed Virgin Mary