Kanyā Pūjā or Kumārī Pūjā, is a Hindu holy ritual, carried out especially on the Ashtami and Navami of the Navaratri festival. The ceremony primarily involves the worship of nine girls, representing the nine forms of Goddess Durga. From Wikipedia
This year, the revered Hindu festivals of Durga Puja and Navratri see Ashtami and Navami falling on the same day, marking a special occasion for devotees.