Maha Shivaratri is a Hindu festival celebrated annually in honour of the god Shiva. There is a in every lunary month on its 13th night /14th day, but once a year in late winter (February/March) and before the arrival of spring, marks Maha Shivaratri which means "the Great Night of Shiva".
It is a major festival in Hinduism, but one that is solemn and marks a remembrance of "overcoming darkness and ignorance" in life and the world. It is observed by remembering Shiva and chanting prayers, fasting, doing Yoga and meditating on ethics and virtues such as self-restraint, honesty, noninjury to others, forgiveness and the discovery of Shiva. The ardent devotees keep awake all night. Others visit one of the Shiva temples or go on pilgrimage to Jyotirlingams. This is an ancient Hindu festival whose origin date is unknown
Shivaratri is great festival of convergence of Shiva and Shakti. Chaturdashi Tithi during Krishna Paksha in month of Magha is known as Maha Shivaratri according to South Indian calendar. However according to North Indian calendar Masik Shivaratri in month of Phalguna is known as Maha Shivaratri. In both calendars it is naming convention of lunar month which differs. However both, North Indians and South Indians, celebrate Maha Shivaratri on same day.
According to Hindu mythology, Shivaratri or ‘Shiva's Great Night’ symbolizes the wedding day of Lord Shiva and Parvati. Many however, believe, Shivaratri is the night when Lord Shiva performed the Tandava Nritya - the dance of primordial creation, preservation and destruction. Celebrating the festival in a customary manner, devotees give a ritual bath to the Lingam with the panchagavya - milk, sour milk, urine, butter and dung. Celebrations of Shivaratri Festival mainly take place at night. Devotees of Lord Shiva throng Shiva temples across the country and spend ‘the Night of Lord Shiva’ by chanting verses and hymns in praise of the Lord. The festival holds special meaning for the ladies. They pray to Goddess Parvati also called 'Gaura', the giver of 'suhag' for good husbands, marital bliss and a long and prosperous married life.