Navaratri is related to Dussehra,Dashain . Ashvin Shukla Prathama is when the festival begins . Hindus observe Navaratri festival . Navaratri 2018 date was 10 Oct, Wed – 18 Oct, Thu ,(Vijayadashami: 19 Oct, Fri) . Biannual is the frequency of this festival . Navaratri 2019 date was 29 Sep, Sun – 8 Oct, Tue ,(Vijayadashami: 8 Oct, Tue) . Ashvin Shukla Navami is when this festival ends  . Navratri,Nauratri,Navarathri,Navratam,or Nauratam is also called Navaratri . 9 days are the celebrations of this festival
Navaratri was celebrated on 10 Oct, Wed – 18 Oct, Thu ,(Vijayadashami: 19 Oct, Fri) in 2018