Ganesh Chathurti is a festival celebrating the elephant headed god Ganesh. Ganesh is the youngest son of Lord Shiva and Parvati and appears during the fourth day of the Hindu lunar-solar calendar in the month of Badrapada (August/September)
There are two stories of his appearance. One says, that the Goddess Parvati created Ganesha out of mud to guard her bathing area. Shiva was away during this time and when he returned Ganesh stopped him from entering. An angry Shiva severed the head of Ganesha during combat. Parvati was enraged and Shiva promised Ganesha will live again. The devas who went in search of a head could manage only the head of an elephant. Shiva fixed the elephant’s head on the child and brought him back to life.