Which country has celebrated the greatest and longest hindu festival "BadaDashain"?

On September 29, 2019 the greatest and longest hindu festival of Nepal named as Bada Dashain formally began. The first day of this Dashain marks the beginning of Navaratri festival too. Seeds of maize, wheat, barley, etc are sowed in a "Ghada" (earthen pot) and kept in houses or temples as part of the vedic tradition. The sprouts are taken on 10th day which is observed as vijayadashami.This festival is also simply called as Dashain.