Vaisakhi, also known as Baisakhi or Mesadi or Basoa, marks the first day of the month of Vaisakh and is traditionally celebrated annually on 13 April or 14 April. It is seen as a spring harvest celebration primarily in Punjab and Northern India. Whilst it is culturally significant in many parts of India as a festival of harvest, Vaisakhi is also the date for the Indian Solar New Year. However, Sikhs celebrate the new year on the first the month Chet, according to the Nanakshahi calendar.