Sister Maria Hummel Day is observed on May 21 each year by both Catholics and Non-Catholics to honor Sister Maria Hummel, a German Franciscan nun and painter known for her artwork that inspired the popular Hummel figurines. Her paintings, which often depicted children, gained prominence in the 1930s but faced condemnation from the Nazi regime, leading to her art being banned in Germany. Despite the challenges during World War II, including the closure of convents and restrictions on her work, Sister Hummel continued to create art, which became her sole source of income. Today, her figurines are sold worldwide, particularly in Germany, and the day serves as a celebration of her artistic legacy and resilience. Observers may engage in activities that reflect on her contributions to art and culture.