Ganesha Chaturthi (गणेश चतुर्थी) , also known as Vinayaka Chaturthi is the Hindu festival of Ganesha, the elephant-headed son of Shiva and Parvati, who is believed to bestow his presence on earth for all his devotees in the duration of this festival. It is the birthday of Lord Ganesha who is widely worshiped as the god of wisdom, prosperity and good fortune.
The festival is observed in the Hindu calendar month of Bhaadrapada, starting on the shukla chaturthi (fourth day of the waxing moon period). The date usually falls between 20 August and 15 September. The festival lasts for 10 days, ending on Anant Chaturdashi (fourteenth day of the waxing moon period).
While celebrated all over India, it is most elaborate in Maharashtra, Goa, Gujarat,Orissa , Karnataka, Tamil Nadu and Andhra Pradesh. Outside India, it is celebrated widely in Nepal and by Tamil Hindus in Sri Lanka.