Maha Shivaratri is a Hindu festival celebrated annually in honour of the god Shiva. The name also refers to the night when Shiva performs the heavenly dance.There is a Shivaratri in every luni-solar month of the Hindu calendar, on the month's 13th night/14th day, but once a year in late winter (February/March, or Phalguna) and before the arrival of Summer, marks Maha Shivaratri which means "The Great Night of Shiva"