Rangolis are usually made during Diwali or Tihar, Onam, Pongal, and other Hindu festivals in the Indian subcontinent, and are most often made during Diwali.
The making of colorful patterns on the floor using a mix of materials such as sand, flower petals, rice flour, lentils and beans, is what forms a Rangoli -- one of the most beautiful Indian folk arts.
Traditionally, Rangoli is an art of decoration drawn on the floor or the entrances of homes. It is thought to bring good luck, prosperity on the house and in the family, and to welcome guests.
Some mothers in India do this activity every morning, or on a special festive occasion like Diwali, Onam, and Pongal. It is a folk art that is passed from one generation to another as mothers teach the art of Rangoli to their kids.