Why does June belong to the Sacred Heart?

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Each month of the Catholic year carries a devotion. June is given to the Most Sacred Heart of Jesus: His human heart, pierced on the cross, as the living image of how completely God loves us. The devotion grew from the visions given to St. Margaret Mary Alacoque in the 1670s. This month, the Church invites one simple practice: begin each day by giving Him your heart, since He has already given you His.