Anukokunda Oka Roju (Telugu: అనుకోకుండా ఒక రోజు, English : Unexpectedly, One Day!) is a 2005 Telugu neo-noir mystery-thriller film written & directed by Chandra Sekhar Yeleti and produced by Gangaraju Gunnam and Venkat Dega. The film starred Jagapati Babu, Charmme Kaur, Shashank in lead roles and has music composed by M.M. Keeravani. This heroine-oriented suspense film was a critical success. The film was declared a Blockbuster at the box office. The film was emerged as one of the best suspense thriller film in Telugu film Industry of all time. The performances of Charmee Kaur, Jagapati Babu and Shashank were praised by audience. The film was remade as Sunday in Hindi starring Ajay Devgan, Ayesha Takia, Arshad Warsi & Irrfan Khan.