The Ganesh Chaturthi festival is the day when Lord Ganesha shows his presence on earth for all his devotees. The festival lasts up to 10 days and ends on the day of Ananta Chaturdashi. There are public celebrations on that day. During the festival an idol of Shri Ganesha is worshiped in every house.
Hinduism: World Oldest Religion
Hinduism is one of the world's largest religions, followed by one billion people making it the third largest religion in the world. Most of the Hindus are in the Indian subcontinent. Nevertheless, they are not a religious majority except in India and Nepal. India has a Hindu population of 890 million.