Maha Shivratri (March 2nd 2011) is celebrated in honor of Lord Shiva on the 13th (or 14th) night of the Krishna paksha (dark half or waning phase) of the moon (night before Amavasya) in the month of Phalgun (Feb-March) by almost all sects within Hinduism. It is a day of fasting for all devotees of Lord Shiva and is one of the eight most significant days of fasting in the Hindu Calendar.