The Lord Mahavishnu, one of the Hindu Trinity, representing the preservative aspect of the universe as in his previous incarnations (avatars), descended into the world to kill the ten-headed Asura named Ravana..
Panguni Uttiram is a festival celebrating celestial marriages. Lord Shiva weds goddess Meenakshi (a Parvati incarnation) on this date. Also celebrated is the marriage of Lord Subramanya to Theivanai, the adopted daughter of Indra.
It is believed that Parvati resides at the base, Saraswati at the centre of the palm of your hand and Laksmi at the upper portion of the hand ie., fingertips. It is therefore advised that the first thing you see after you wake up in the morning is your right hand palm.
Each day one should wake up and see one of these things the first thing in the morning : Temple Gopuram, Shiva Lingam, Pictures of Gods, a mountain surrounded by clouds, sea, sun, fox, gold or the palm of your right hand. If you do so that day would be favourable to you