Maha Shivaratri is a Hindu festival celebrated annually in honour of the god Shiva. The name also refers to the night when Lord Shiva performs the heavenly dance.In every month of the luni-solar Hindu calendar, there is a Shivaratri – "night of Shiva" – on the day before new moon. But once a year, in late winter and before the arrival of Summer (February/March), this night is called "Maha Shivaratri" – "the Great Night of Shiva". This day falls in the month of Phalguna as per the North Indian Hindu calendar and in Magha as per the South Indian Hindu calendar (see Amanta and Purnimanta systems)