Navaratri Sankalpa mantram or Navaratri Sankalpam is the prominent mantra or stotra chanted before starting the Navratri Durga Puja.  Sankalpa mantra is the prayer which includes the name, gothra, address, nakshatra at the time of puja, tithi, karana, yoga, during the puja time.  In any puja Sankalpa mantram is necessary.  If you live in India you need to chant your place as “bharatha khande bharatha varshe, Meror Dakshina digbhage”, and if you live in California (USA) you can chant as “Paschima samudra theere”.  If you are confused about the place where you are living, just chant “the country name as …….  Deshe”.