Maha Shivratri, the night of the worship of Shiva, occurs on the 14th night of the new moon during the dark half of the month of Phalguna. This year it falls on a moonless Friday night of February 12, when Hindus offer special prayer to the lord. Shivratri (Sanskrit 'ratri' = night) is the night when he is said to have performed the Tandava Nritya or the dance of primordial creation, preservation and destruction.