21 March 2015 is Nav Varsh (Hindu Nav Varsh). It is the Hindu New Year in calendars followed in Uttar Pradesh, Uttaranchal, Bihar, Madhya Pradesh, Himachal Pradesh, Jharkhand, Chhattisgarh, Haryana, and Maharashtra.
It is observed on Chaitra Shukla Pratipada, the day after Amavasya in Chaitra month. As per the traditional Vikram Samvat calendar, it is Vikram Samvar 2072 year. Vikram Samvat is a traditional calendar system which follows luni-solar system.
Nav Varsh or the Hindi New Year is celebrated as Gudhi Padwa in Maharashtra. This festival is celebrated as Ugadi – Telugu New Year and Kannada New Year. 2015-2016 is Manmadha nama Samvatsaram in Shalivahana shaka calendar. Sindhis observe this as Cheti Chand or Sindhi New Year.
Tamil New Year day is celebrated as Chithirai Vishu or Varushapirapu and Malayalam New Year day as Vishu. Bengali New Year day is Baisakh or Poila Baisakh or Naba Barsha and Assamese New Year day is Bohag Bihu.